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<!--Created on: 12/20/2011 1:42:41 PM-->
<!--Modified on: 12/20/2011 1:42:42 PM-->
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US">Property, Plant and Equipment, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US">Property, Plant and Equipment, Gross, Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US">Property, Plant and Equipment, Gross, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US">Property, Plant and Equipment, Gross, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US">Less: Accumulated depreciation and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US">Less: Accumulated depreciation and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xml:lang="en-US">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Property, Plant and Equipment, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Property, Plant and Equipment, Net, Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Property, Plant and Equipment, Net, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">PROPERTY AND EQUIPMENT, NET</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsAbstract" xlink:label="us-gaap_OtherAssetsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsAbstract" xlink:to="us-gaap_OtherAssetsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsAbstract_lbl" xml:lang="en-US">OTHER ASSETS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredRentReceivablesNetNoncurrent" xlink:label="us-gaap_DeferredRentReceivablesNetNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRentReceivablesNetNoncurrent" xlink:to="us-gaap_DeferredRentReceivablesNetNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRentReceivablesNetNoncurrent_lbl" xml:lang="en-US">Rent deposit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DeferredRentReceivablesNetNoncurrent_lbl" xml:lang="en-US">Deferred Rent Receivables, Net, Noncurrent, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedPatentsGross" xlink:label="us-gaap_FiniteLivedPatentsGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedPatentsGross" xlink:to="us-gaap_FiniteLivedPatentsGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedPatentsGross_lbl" xml:lang="en-US">Patents</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent" xlink:label="us-gaap_NotesAndLoansReceivableNetNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesAndLoansReceivableNetNoncurrent" xlink:to="us-gaap_NotesAndLoansReceivableNetNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesAndLoansReceivableNetNoncurrent_lbl" xml:lang="en-US">Notes, Loans and Financing Receivable, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesAndLoansReceivableNetNoncurrent_lbl" xml:lang="en-US">Note Receivable, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NotesAndLoansReceivableNetNoncurrent_lbl" xml:lang="en-US">Notes, Loans and Financing Receivable, Net, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="us-gaap_DerivativeAssetsNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetsNoncurrent" xlink:to="us-gaap_DerivativeAssetsNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeAssetsNoncurrent_lbl" xml:lang="en-US">Derivative Asset, Fair Value, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeAssetsNoncurrent_lbl" xml:lang="en-US">Derivative asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DerivativeAssetsNoncurrent_lbl" xml:lang="en-US">Derivative Asset, Fair Value, Net, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="us-gaap_EquityMethodInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestments" xlink:to="us-gaap_EquityMethodInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestments_lbl" xml:lang="en-US">Investment in Nanotope Inc., equity basis</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostMethodInvestments" xlink:label="us-gaap_CostMethodInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostMethodInvestments" xlink:to="us-gaap_CostMethodInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostMethodInvestments_lbl" xml:lang="en-US">Investment in Leonardo Biosystems Inc., at cost</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US">Other Assets, Noncurrent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US">TOTAL OTHER ASSETS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">TOTAL ASSETS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US">CURRENT LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US">Accounts payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US">Accounts Payable, Current, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US">Accrued expenses, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US">Accrued Liabilities, Current, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US">Accrued expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xml:lang="en-US">Accrued payroll and benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xml:lang="en-US">Employee-related Liabilities, Current, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="us-gaap_DerivativeLiabilitiesCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US">Derivative liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US">Derivative liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NotesPayableCurrent" xlink:label="us-gaap_NotesPayableCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableCurrent" xlink:to="us-gaap_NotesPayableCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayableCurrent_lbl" xml:lang="en-US">Note payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesPayableCurrent_lbl" xml:lang="en-US">Note payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NotesPayableCurrent_lbl" xml:lang="en-US">Notes Payable, Current, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US">TOTAL CURRENT LIABILITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US">TOTAL CURRENT LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl" xml:lang="en-US">LONG-TERM LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US">Other Liabilities, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US">Other non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US">Other Liabilities, Noncurrent, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermNotesPayable" xlink:label="us-gaap_LongTermNotesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermNotesPayable" xlink:to="us-gaap_LongTermNotesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermNotesPayable_lbl" xml:lang="en-US">Long Term Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermNotesPayable_lbl" xml:lang="en-US">Note payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LongTermNotesPayable_lbl" xml:lang="en-US">Notes Payable, Noncurrent, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="us-gaap_LiabilitiesNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrent" xlink:to="us-gaap_LiabilitiesNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US">TOTAL LONG-TERM LIABILITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US">TOTAL LONG-TERM LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments and contingencies</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US">STOCKHOLDERS' EQUITY1</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred Stock, Value, Issued, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common Stock, Value, Issued, Beginning Balance</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Stockholders' Equity Attributable to Parent, Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Stockholders' Equity Attributable to Parent, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Total Arrowhead Research Corporation stockholders' equity</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US">Allowance for doubtful accounts receivable, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US">Allowance for Doubtful Accounts Receivable, Current, Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US">Allowance for Doubtful Accounts Receivable, Current, Beginning Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US">Trade receivable, allowance for doubtful accounts</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred stock, par or stated value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Preferred stock, par value</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US">Preferred stock, shares authorized</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred stock, shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US">Preferred Stock, Shares Issued, Total</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US">Preferred stock, shares outstanding</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LaborAndRelatedExpense_lbl" xml:lang="en-US">Labor and Related Expense</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LaborAndRelatedExpense_lbl" xml:lang="en-US">Labor and Related Expense, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and administrative expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and Administrative Expense, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US">Research and development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US">Research and Development Expense, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Share-based compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Stock-based compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Share-based Compensation, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US">Patent amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US">Amortization of Intangible Assets, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">TOTAL OPERATING EXPENSES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US">TOTAL OPERATING EXPENSES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">OPERATING LOSS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">OPERATING LOSS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US">OTHER INCOME (EXPENSE)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Income (Loss) from Equity Method Investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Non-cash loss from equity investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Loss on equity of investments - Nanotope</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Income (Loss) from Equity Method Investments, Total</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_GainLossOnSaleOfStockInSubsidiary" xlink:label="arwr_GainLossOnSaleOfStockInSubsidiary" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_GainLossOnSaleOfStockInSubsidiary" xlink:to="arwr_GainLossOnSaleOfStockInSubsidiary_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_GainLossOnSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Gain (loss) on entity's disposition of equity in securities of subsidiaries. Reflects the difference in the parent company's carrying amount of the equity interest in the subsidiary immediately before and after all stock transactions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_GainLossOnSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Gain (Loss) on Sale of Stock in Subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="arwr_GainLossOnSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Gain on sale of stock in subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_GainLossOnSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Gain on sale of stock in subsidiary</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:to="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US">Gain/(loss) on sale of fixed assets, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US">Loss on sale/donation of fixed assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US">Gain/(loss) on sale of fixed assets, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US">Gain (Loss) on Sale of Property Plant Equipment, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xml:lang="en-US">Loss on disposal of fixed assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MarketableSecuritiesGainLoss" xlink:label="us-gaap_MarketableSecuritiesGainLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MarketableSecuritiesGainLoss" xlink:to="us-gaap_MarketableSecuritiesGainLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MarketableSecuritiesGainLoss_lbl" xml:lang="en-US">Realized and unrealized gain in marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MarketableSecuritiesGainLoss_lbl" xml:lang="en-US">Realized and unrealized gain (loss) on marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_MarketableSecuritiesGainLoss_lbl" xml:lang="en-US">Realized and unrealized gain (loss) on marketable securities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="us-gaap_InterestIncomeExpenseNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeExpenseNet" xlink:to="us-gaap_InterestIncomeExpenseNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xml:lang="en-US">Interest income (expense), net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xml:lang="en-US">Interest Income (Expense), Net, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnDerivatives" xlink:to="us-gaap_UnrealizedGainLossOnDerivatives_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xml:lang="en-US">Change in value of derivative liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xml:lang="en-US">Change in value of derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xml:lang="en-US">Change in value of derivatives</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherIncome" xlink:label="us-gaap_OtherIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncome" xlink:to="us-gaap_OtherIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US">Other Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US">Other income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US">Other Income, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US">TOTAL OTHER INCOME (EXPENSE)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xml:lang="en-US">LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Provision for income taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US">Income Tax Expense (Benefit), Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">LOSS FROM CONTINUING OPERATIONS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Gain/(loss) from discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Income (loss) from discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Income (loss) from discontinued operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax" xlink:label="us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net loss attributable to Arrowhead</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income (loss) attributable to Arrowhead</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US">Income (Loss) from Continuing Operations, Per Basic Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US">Income (loss) from continuing operations attributable to Arrowhead common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US">Income (Loss) from Continuing Operations, Per Outstanding Share, Total</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US">Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US">Income (loss) from discontinued operations attributable to Arrowhead common shareholders</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Earnings Per Share, Basic</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Net loss attributable to Arrowhead shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Net income (loss) attributable to Arrowhead shareholders</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US">Weighted average shares outstanding</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US">Earnings per share - diluted:</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xml:lang="en-US">Income (loss) from continuing operations attributable to Arrowhead common shareholders</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xml:lang="en-US">Income (loss) from discontinued operations attributable to Arrowhead common shareholders</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedForMarketableSecuritiesAtTenDollarPerUnitMember_lbl" xml:lang="en-US">Issued for marketable securities at ten dollar per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedForMarketableSecuritiesAtTenDollarPerUnitMember_lbl" xml:lang="en-US">Issued For Marketable Securities At Ten Dollar Per Unit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedForMarketableSecuritiesAtTenDollarPerUnitMember_lbl" xml:lang="en-US">Issued For Marketable Securities At $10.00 Per Unit [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedForCashAtFifteenDollarPerUnitMember" xlink:label="arwr_IssuedForCashAtFifteenDollarPerUnitMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedForCashAtFifteenDollarPerUnitMember" xlink:to="arwr_IssuedForCashAtFifteenDollarPerUnitMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedForCashAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued for cash at fifteen dollar per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedForCashAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued For Cash At Fifteen Dollar Per Unit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedForCashAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued For Cash At $15.00 Per Unit [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember" xlink:label="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember" xlink:to="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Stock Issuance Cost Charged To Additional Paid In Capital Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Stock Issuance Cost Charged To Additional Paid In Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_StockIssuanceCostChargedToAdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Stock Issuance Cost Charged To Additional Paid In Capital [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember" xlink:to="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Insert Therapeutics Equity Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Insert Therapeutics Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfInsertTherapeuticsEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Insert Therapeutics Equity [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember" xlink:to="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Calandos Equity Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Calandos Equity [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ArrowheadsIncreaseInProportionateShareOfCalandosEquityMember_lbl" xml:lang="en-US">Arrowheads Increase In Proportionate Share Of Calando's Equity [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember" xlink:label="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember" xlink:to="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember_lbl" xml:lang="en-US">Issued as a gift for ten dollar and ninety cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember_lbl" xml:lang="en-US">Issued As Gift For Ten Dollar And Ninety Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAsGiftForTenDollarAndNinetyCentsPerShareMember_lbl" xml:lang="en-US">Issued as a Gift for $10.90 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember" xlink:label="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember" xlink:to="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued as stock issuance cost at fifteen dollar per unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued As Stock Issuance Cost At Fifteen Dollar Per Unit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAsStockIssuanceCostAtFifteenDollarPerUnitMember_lbl" xml:lang="en-US">Issued As Stock Issuance Cost At $15.00 Per Unit [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ExercisedAtTwoDollarPerShareMember" xlink:label="arwr_ExercisedAtTwoDollarPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ExercisedAtTwoDollarPerShareMember" xlink:to="arwr_ExercisedAtTwoDollarPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ExercisedAtTwoDollarPerShareMember_lbl" xml:lang="en-US">Exercised at two dollar per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ExercisedAtTwoDollarPerShareMember_lbl" xml:lang="en-US">Exercised At Two Dollar Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ExercisedAtTwoDollarPerShareMember_lbl" xml:lang="en-US">Exercised At $2.00 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ExercisedAtTenDollarPerShareMember" xlink:label="arwr_ExercisedAtTenDollarPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ExercisedAtTenDollarPerShareMember" xlink:to="arwr_ExercisedAtTenDollarPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ExercisedAtTenDollarPerShareMember_lbl" xml:lang="en-US">Exercised at ten dollar per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ExercisedAtTenDollarPerShareMember_lbl" xml:lang="en-US">Exercised At Ten Dollar Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ExercisedAtTenDollarPerShareMember_lbl" xml:lang="en-US">Exercised At $10.00 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ExercisedAtFifteenDollarPerShareMember" xlink:label="arwr_ExercisedAtFifteenDollarPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ExercisedAtFifteenDollarPerShareMember" xlink:to="arwr_ExercisedAtFifteenDollarPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ExercisedAtFifteenDollarPerShareMember_lbl" xml:lang="en-US">Exercised at fifteen dollar per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ExercisedAtFifteenDollarPerShareMember_lbl" xml:lang="en-US">Exercised At Fifteen Dollar Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ExercisedAtFifteenDollarPerShareMember_lbl" xml:lang="en-US">Exercised At $15.00 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember" xlink:label="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember" xlink:to="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued to purchase insert therapeutics share at thirty nine dollars and eighty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued To Purchase Insert Therapeutics Share At Thirty Nine Dollars And Eighty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedToPurchaseInsertTherapeuticsShareAtThirtyNineDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued To Purchase Insert Therapeutics Share At $39.80 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember" xlink:label="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember" xlink:to="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued at forty eight dollars and eighty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Forty Eight Dollars And Eighty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtFortyEightDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $48.80 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember" xlink:label="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember" xlink:to="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember_lbl" xml:lang="en-US">Issued at thirty eight dollars and forty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Thirty Eight Dollars And Forty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtThirtyEightDollarsAndFortyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $38.40 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtThirtyFiveDollarsPerShareMember" xlink:label="arwr_IssuedAtThirtyFiveDollarsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtThirtyFiveDollarsPerShareMember" xlink:to="arwr_IssuedAtThirtyFiveDollarsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtThirtyFiveDollarsPerShareMember_lbl" xml:lang="en-US">Issued at thirty five dollars per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtThirtyFiveDollarsPerShareMember_lbl" xml:lang="en-US">Issued At Thirty Five Dollars Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtThirtyFiveDollarsPerShareMember_lbl" xml:lang="en-US">Issued At $35.00 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember" xlink:label="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember" xlink:to="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember_lbl" xml:lang="en-US">Issued at fifty nine dollars and ten cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember_lbl" xml:lang="en-US">Issued At Fifty Nine Dollars And Ten Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtFiftyNineDollarsAndTenCentsPerShareMember_lbl" xml:lang="en-US">Issued At $59.10 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember" xlink:label="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember" xlink:to="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued to purchase calando pharmaceuticals inc at fifty one dollars nd seventy cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued To Purchase Calando Pharmaceuticals Inc At Fifty One Dollars And Seventy Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedToPurchaseCalandoPharmaceuticalsIncAtFiftyOneDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued To Purchase Calando Pharmaceuticals Inc At $51.70 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember" xlink:label="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember" xlink:to="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued at fifty seven dollars and eighty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Fifty Seven Dollars And Eighty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtFiftySevenDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $57.80 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember" xlink:label="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember" xlink:to="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued for purchase of carbon nanotechnologies inc at thirty seven dollars and seventy cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued For Purchase Of Carbon Nanotechnologies Inc At Thirty Seven Dollars And Seventy Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedForPurchaseOfCarbonNanotechnologiesIncAtThirtySevenDollarsAndSeventyCentsPerShareMember_lbl" xml:lang="en-US">Issued For Purchase Of Carbon Nanotechnologies Inc At $37.70 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember" xlink:label="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember" xlink:to="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember_lbl" xml:lang="en-US">Issued at approximately eighteen dollar per share net.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember_lbl" xml:lang="en-US">Issued At Approximately Eighteen Dollar Per Share Net [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtApproximatelyEighteenDollarPerShareNetMember_lbl" xml:lang="en-US">Issued At Approximately $18.00 Per Share Net [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember" xlink:label="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember" xlink:to="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember_lbl" xml:lang="en-US">Issued at twenty seven dollars and twenty cents per share to rice university.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember_lbl" xml:lang="en-US">Issued At Twenty Seven Dollars And Twenty Cents Per Share To Rice University [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtTwentySevenDollarsAndTwentyCentsPerShareToRiceUniversityMember_lbl" xml:lang="en-US">Issued At $27.20 Per Share To Rice University [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember" xlink:label="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember" xlink:to="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember_lbl" xml:lang="en-US">Issued at twenty eight dollars and thirty cents per share to purchase shares of unidym inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember_lbl" xml:lang="en-US">Issued At Twenty Eight Dollars And Thirty Cents Per Share To Purchase Shares Of Unidym Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtTwentyEightDollarsAndThirtyCentsPerShareToPurchaseSharesOfUnidymIncMember_lbl" xml:lang="en-US">Issued At $28.30 Per Share To Purchase Shares Of Unidym Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember" xlink:label="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember" xlink:to="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember_lbl" xml:lang="en-US">Issued at twenty nine dollars and fifty cents per share to purchase MASA energy LLC.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember_lbl" xml:lang="en-US">Issued At Twenty Nine Dollars And Fifty Cents Per Share To Purchase Masa Energy Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtTwentyNineDollarsAndFiftyCentsPerShareToPurchaseMasaEnergyLlcMember_lbl" xml:lang="en-US">Issued At $29.50 per Share To Purchase MASA Energy LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember" xlink:label="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember" xlink:to="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember_lbl" xml:lang="en-US">Issued at twenty one dollars and ninety cents per share to unidym for the acquisition of nanoconduction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember_lbl" xml:lang="en-US">Issued At Twenty One Dollars And Ninety Cents Per Share To Unidym For Acquisition Of Nanoconduction [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtTwentyOneDollarsAndNinetyCentsPerShareToUnidymForAcquisitionOfNanoconductionMember_lbl" xml:lang="en-US">Issued At $21.90 Per Share To Unidym For The Acquisition Of Nanoconduction [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtThreeDollarsPerShareMember" xlink:label="arwr_IssuedAtThreeDollarsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtThreeDollarsPerShareMember" xlink:to="arwr_IssuedAtThreeDollarsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtThreeDollarsPerShareMember_lbl" xml:lang="en-US">Issued at three dollars per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtThreeDollarsPerShareMember_lbl" xml:lang="en-US">Issued At Three Dollars Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtThreeDollarsPerShareMember_lbl" xml:lang="en-US">Issued At $3.00 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember" xlink:label="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember" xlink:to="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued at twenty one dollars and eighty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Twenty One Dollars And Eighty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtTwentyOneDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $21.80 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember" xlink:label="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember" xlink:to="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued at five dollars and twenty cents per share to TEL ventures in exchange for unidym's shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued At Five Dollars And Twenty Cents Per Share To Tel Ventures In Exchange For Unidym S Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtFiveDollarsAndTwentyCentsPerShareToTelVenturesInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued At $5.20 Per Share To TEL Ventures In Exchange For Unidym's Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember" xlink:label="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember" xlink:to="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued at five dollars and fifty cents per share to unidym stockholder in exchange for unidym's shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued At Five Dollars And Fifty Cents Per Share To Unidym Stockholder In Exchange For Unidym S Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtFiveDollarsAndFiftyCentsPerShareToUnidymStockholderInExchangeForUnidymSSharesMember_lbl" xml:lang="en-US">Issued At $5.50 Per Share To Unidym Stockholder In Exchange For Unidym's Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember" xlink:label="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember" xlink:to="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember_lbl" xml:lang="en-US">Issued at six dollars and thirty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Six Dollars And Thirty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtSixDollarsAndThirtyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $6.30 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember" xlink:label="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember" xlink:to="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember_lbl" xml:lang="en-US">Issued at thirteen dollars and twelve cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember_lbl" xml:lang="en-US">Issued At Thirteen Dollars And Twelve Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtThirteenDollarsAndTwelveCentsPerShareMember_lbl" xml:lang="en-US">Issued At $13.12 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember" xlink:label="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember" xlink:to="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued at three dollars and eighty cents per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At Three Dollars And Eighty Cents Per Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedAtThreeDollarsAndEightyCentsPerShareMember_lbl" xml:lang="en-US">Issued At $3.80 Per Share [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuanceOfCommonStockForSubscriptionMember" xlink:label="arwr_IssuanceOfCommonStockForSubscriptionMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuanceOfCommonStockForSubscriptionMember" xlink:to="arwr_IssuanceOfCommonStockForSubscriptionMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuanceOfCommonStockForSubscriptionMember_lbl" xml:lang="en-US">Issuance of common stock for subscription.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuanceOfCommonStockForSubscriptionMember_lbl" xml:lang="en-US">Issuance Of Common Stock For Subscription [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuanceOfCommonStockForSubscriptionMember_lbl" xml:lang="en-US">Issuance Of Common Stock For Subscription [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember" xlink:label="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember" xlink:to="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember_lbl" xml:lang="en-US">Series D Preferred Stock Issued For Subscription In Unidym [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember_lbl" xml:lang="en-US">Series D Preferred Stock Issued For Subscription In Unidym [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_SeriesDPreferredStockIssuedForSubscriptionInUnidymMember_lbl" xml:lang="en-US">Series D Preferred Stock Issued For Subscription In Unidym [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember" xlink:label="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember" xlink:to="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember_lbl" xml:lang="en-US">Issued to Calando stockholders in exchange for Calando's shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember_lbl" xml:lang="en-US">Issued To Calando Stockholders In Exchange For Calando S Shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_IssuedToCalandoStockholdersInExchangeForCalandoSSharesMember_lbl" xml:lang="en-US">Issued To Calando Stockholders In Exchange For Calando's Shares [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US">Statement, Equity Components [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US">Equity Component [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US">Equity Component [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ParentMember" xlink:label="us-gaap_ParentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ParentMember" xlink:to="us-gaap_ParentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ParentMember_lbl" xml:lang="en-US">Parent [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ParentMember_lbl" xml:lang="en-US">Parent [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_SubscriptionsReceivableMember" xlink:label="arwr_SubscriptionsReceivableMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_SubscriptionsReceivableMember" xlink:to="arwr_SubscriptionsReceivableMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_SubscriptionsReceivableMember_lbl" xml:lang="en-US">Subscriptions Receivable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_SubscriptionsReceivableMember_lbl" xml:lang="en-US">Subscriptions Receivable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_SubscriptionsReceivableMember_lbl" xml:lang="en-US">Subscription Receivable [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US">Common Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US">Common Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Additional Paid In Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US">Additional Paid-In Capital [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Stock issuances</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Stock issued during period, shares, new issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Stock issuances, in shares</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt_lbl" xml:lang="en-US">Reclassification of former Unidym mezzanine debt to equity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts_lbl" xml:lang="en-US">Stock issuance cost charged to additional paid-in capital</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xml:lang="en-US">Stock issued during period, value, stock options exercised</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xml:lang="en-US">Stock issued during period, shares, stock options exercised</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest_lbl" xml:lang="en-US">Adjustments to additional paid in capital, reallocation of noncontrolling interest</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:to="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Proceeds from Issuance of Preferred Stock and Preference Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Issuance of Series D Preferred Stock for Subscription in Unidym</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl" xml:lang="en-US">Issuance of preferred stock in subsidiary</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xml:lang="en-US">Adjustments to additional paid in capital, convertible debt with conversion feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature_lbl" xml:lang="en-US">Amortization of discount on Unidym Series D Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SharesIssued" xlink:label="us-gaap_SharesIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesIssued_lbl" xml:lang="en-US">Shares, issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesIssued_lbl" xml:lang="en-US">Shares, issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesIssued_lbl" xml:lang="en-US">Shares, issued</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MinorityInterestIncreaseFromStockIssuance" xlink:label="us-gaap_MinorityInterestIncreaseFromStockIssuance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestIncreaseFromStockIssuance" xlink:to="us-gaap_MinorityInterestIncreaseFromStockIssuance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestIncreaseFromStockIssuance_lbl" xml:lang="en-US">Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MinorityInterestIncreaseFromStockIssuance_lbl" xml:lang="en-US">Divestiture of Unidym</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit" xlink:label="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit" xlink:to="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit_lbl" xml:lang="en-US">Common stock and warrants issued for cash, price per unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit_lbl" xml:lang="en-US">Common Stock and Warrants Issued for Cash, Price Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_CommonStockAndWarrantsIssuedForCashPricePerUnit_lbl" xml:lang="en-US">Common stock &amp; warrants issued for cash, price per unit</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ExerciseOfStockOptionsPricePerShare" xlink:label="arwr_ExerciseOfStockOptionsPricePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ExerciseOfStockOptionsPricePerShare" xlink:to="arwr_ExerciseOfStockOptionsPricePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ExerciseOfStockOptionsPricePerShare_lbl" xml:lang="en-US">Exercise of stock options, price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ExerciseOfStockOptionsPricePerShare_lbl" xml:lang="en-US">Exercise of Stock Options, Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ExerciseOfStockOptionsPricePerShare_lbl" xml:lang="en-US">Exercise of stock options, price per share</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_CommonStockIssuanceValuePerShare" xlink:label="arwr_CommonStockIssuanceValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_CommonStockIssuanceValuePerShare" xlink:to="arwr_CommonStockIssuanceValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_CommonStockIssuanceValuePerShare_lbl" xml:lang="en-US">Common Stock Issuance Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_CommonStockIssuanceValuePerShare_lbl" xml:lang="en-US">Common Stock Issuance Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_CommonStockIssuanceValuePerShare_lbl" xml:lang="en-US">Common stock issued, par value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="arwr_CommonStockIssuanceValuePerShare_lbl" xml:lang="en-US">Common stock issued, par value per share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US">Consolidated Statements Of Cash Flows [Abstract]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US">CASH FLOWS FROM OPERATING ACTIVITIES:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:to="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">INCOME (LOSS) FROM DISCONTINUED OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">(Income)/loss from discontinued operation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">(Income)/loss from discontinued operation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">(Income) loss from discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">INCOME (LOSS) FROM DISCONTINUED OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xml:lang="en-US">(Income)/loss from discontinued operation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfInvestments" xlink:label="us-gaap_GainLossOnSaleOfInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfInvestments" xlink:to="us-gaap_GainLossOnSaleOfInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US">Realized and unrealized gain on investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US">Realized and unrealized gain on investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US">Realized and unrealized (gain) loss on investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US">Gain (Loss) on Sale of Investments, Total</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_GainLossFromSaleOfSubsidiary" xlink:label="arwr_GainLossFromSaleOfSubsidiary" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_GainLossFromSaleOfSubsidiary_lbl" xml:lang="en-US">Gain (loss) from sale of subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_GainLossFromSaleOfSubsidiary_lbl" xml:lang="en-US">Gain Loss From Sale Of Subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="arwr_GainLossFromSaleOfSubsidiary_lbl" xml:lang="en-US">(Gain) loss from sale of subsidiary</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_StockIssuedAsGift" xlink:label="arwr_StockIssuedAsGift" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_StockIssuedAsGift" xlink:to="arwr_StockIssuedAsGift_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_StockIssuedAsGift_lbl" xml:lang="en-US">Stock issued as gift.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_StockIssuedAsGift_lbl" xml:lang="en-US">Stock Issued As Gift</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="arwr_StockIssuedAsGift_lbl" xml:lang="en-US">Stock issued as gift</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" xlink:to="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl" xml:lang="en-US">Issuance of Stock and Warrants for Services or Claims</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl" xml:lang="en-US">Stock issued for professional services</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_StockIssuedForInProcessResearchAndDevelopment" xlink:label="arwr_StockIssuedForInProcessResearchAndDevelopment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_StockIssuedForInProcessResearchAndDevelopment" xlink:to="arwr_StockIssuedForInProcessResearchAndDevelopment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_StockIssuedForInProcessResearchAndDevelopment_lbl" xml:lang="en-US">Stock issued for in process research and development.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_StockIssuedForInProcessResearchAndDevelopment_lbl" xml:lang="en-US">Stock Issued for In Process Research and Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="arwr_StockIssuedForInProcessResearchAndDevelopment_lbl" xml:lang="en-US">Stock issued for in-process research and development</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ResearchAndDevelopmentInProcess" xlink:label="us-gaap_ResearchAndDevelopmentInProcess" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentInProcess" xlink:to="us-gaap_ResearchAndDevelopmentInProcess_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentInProcess_lbl" xml:lang="en-US">Research and Development in Process</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentInProcess_lbl" xml:lang="en-US">Purchased in-process research and development - Nanoconduction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ResearchAndDevelopmentInProcess_lbl" xml:lang="en-US">Stock Issued for in-process research and development</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US">Depreciation, Depletion and Amortization, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDebtDiscountPremium" xlink:to="us-gaap_AmortizationOfDebtDiscountPremium_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xml:lang="en-US">Amortization of Debt Discount (Premium)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xml:lang="en-US">Amortization (accretion) of note discounts, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfEquityInvestments" xlink:label="us-gaap_GainLossOnSaleOfEquityInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfEquityInvestments" xlink:to="us-gaap_GainLossOnSaleOfEquityInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfEquityInvestments_lbl" xml:lang="en-US">Non-cash loss from equity investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnSaleOfEquityInvestments_lbl" xml:lang="en-US">Non-cash (gain) loss from equity investment</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_NoncontrollingInterest" xlink:label="arwr_NoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_NoncontrollingInterest" xlink:to="arwr_NoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_NoncontrollingInterest_lbl" xml:lang="en-US">Non controlling interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_NoncontrollingInterest_lbl" xml:lang="en-US">Noncontrolling interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="arwr_NoncontrollingInterest_lbl" xml:lang="en-US">Noncontrolling interest</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_GainOnRenegotiationOfAccruedSeverance" xlink:label="arwr_GainOnRenegotiationOfAccruedSeverance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_GainOnRenegotiationOfAccruedSeverance" xlink:to="arwr_GainOnRenegotiationOfAccruedSeverance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_GainOnRenegotiationOfAccruedSeverance_lbl" xml:lang="en-US">Gain on renegotiation of accrued severance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_GainOnRenegotiationOfAccruedSeverance_lbl" xml:lang="en-US">Gain On Renegotiation of Accrued Severance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="arwr_GainOnRenegotiationOfAccruedSeverance_lbl" xml:lang="en-US">Gain on renegotiation of accrued severance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_GainOnRenegotiationOfAccruedSeverance_lbl" xml:lang="en-US">Gain on renegotiation of accrued severance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US">Changes in operating assets and liabilities:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="us-gaap_IncreaseDecreaseInReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInReceivables" xlink:to="us-gaap_IncreaseDecreaseInReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xml:lang="en-US">Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xml:lang="en-US">Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xml:lang="en-US">Increase (Decrease) in Receivables, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherReceivables" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherReceivables" xlink:to="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">Other receivables cash flow</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherReceivables_lbl" xml:lang="en-US">Other receivables</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Other prepaid expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Prepaid expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_lbl" xml:lang="en-US">Prepaid expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Increase (Decrease) in Other Operating Assets, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="us-gaap_IncreaseDecreaseInDeposits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeposits" xlink:to="us-gaap_IncreaseDecreaseInDeposits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xml:lang="en-US">Deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xml:lang="en-US">Increase (Decrease) in Deposits, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US">Accounts payable cash flow</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US">Accounts payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US">Increase (Decrease) in Accounts Payable, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US">Accrued expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US">Accrued expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US">Increase (Decrease) in Accrued Liabilities, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xml:lang="en-US">Accrued severance and other liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH USED IN OPERATING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH USED IN OPERATING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES OF CONTINUING OPERATIONS:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireMarketableSecurities" xlink:to="us-gaap_PaymentsToAcquireMarketableSecurities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities_lbl" xml:lang="en-US">Purchase of marketable securities-US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities_lbl" xml:lang="en-US">Purchase of marketable securities - US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities_lbl" xml:lang="en-US">Purchase of marketable securities-US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities_lbl" xml:lang="en-US">Payments to Acquire Marketable Securities, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US">Purchase of property and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US">Purchase of property and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xml:lang="en-US">Purchase of MASA Energy, LLC</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xml:lang="en-US">Purchase of MASA Energy, LLC</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries" xlink:label="us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries" xlink:to="us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries_lbl" xml:lang="en-US">Minority equity investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries_lbl" xml:lang="en-US">Minority equity investment</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates" xlink:to="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash Paid For Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash paid for interest in Insert</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash paid for interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Payments to Acquire Interest in Subsidiaries and Affiliates, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash paid for interest in Insert</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates" xlink:to="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash Obtained From Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash obtained from interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash obtained from interest in Insert</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Proceeds from Divestiture of Interest in Subsidiaries and Affiliates, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates_lbl" xml:lang="en-US">Cash obtained from interest</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:to="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_lbl" xml:lang="en-US">Proceeds from sale of marketable securities-US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_lbl" xml:lang="en-US">Proceeds from sale of marketable securities - US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_lbl" xml:lang="en-US">Proceeds from Sale and Maturity of Marketable Securities, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments" xlink:to="us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_lbl" xml:lang="en-US">Proceeds from sale of investments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_lbl" xml:lang="en-US">Proceeds from Sale, Maturity and Collections of Investments, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries" xlink:to="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" xml:lang="en-US">Proceeds from sale of subsidiary (net)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" xml:lang="en-US">Divestiture of Unidym</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" xml:lang="en-US">Proceeds from sale of subsidiaries</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xml:lang="en-US">Proceeds from sale of fixed assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xml:lang="en-US">Proceeds from Sale of Property, Plant, and Equipment, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireIntangibleAssets" xlink:to="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" xml:lang="en-US">Payment for patents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" xml:lang="en-US">Payment for patents</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInRestrictedCash" xlink:to="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US">Restricted cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US">Restricted cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US">Increase (Decrease) in Restricted Cash, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashDivestedFromDeconsolidation" xlink:label="us-gaap_CashDivestedFromDeconsolidation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashDivestedFromDeconsolidation" xlink:to="us-gaap_CashDivestedFromDeconsolidation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashDivestedFromDeconsolidation_lbl" xml:lang="en-US">Cash Transferred In Sale Of Subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_CashDivestedFromDeconsolidation_lbl" xml:lang="en-US">Cash transferred in sale of subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashDivestedFromDeconsolidation_lbl" xml:lang="en-US">Cash transferred in sale of subsidiary</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH USED IN INVESTING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" xml:lang="en-US">CASH FLOWS FROM FINANCING ACTIVITIES OF CONTINUING OPERATIONS:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xml:lang="en-US">Proceeds from issuance of Calando debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xml:lang="en-US">Proceeds from Issuance of Long-term Debt, Total</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ProceedsFromSaleOfStockInSubsidiary" xlink:label="arwr_ProceedsFromSaleOfStockInSubsidiary" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ProceedsFromSaleOfStockInSubsidiary" xlink:to="arwr_ProceedsFromSaleOfStockInSubsidiary_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ProceedsFromSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Proceeds from the sale of common and preferred stock of a subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ProceedsFromSaleOfStockInSubsidiary_lbl" xml:lang="en-US">Proceeds from sale of stock in subsidiary</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from Issuance of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from issuance of common stock and warrants, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH PROVIDED BY FINANCING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xml:lang="en-US">NET CASH PROVIDED BY FINANCING ACTIVITIES OF CONTINUING OPERATIONS</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract_lbl" xml:lang="en-US">Net cash provided by (used in) discontinued operations:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract_lbl" xml:lang="en-US">Cash flows from discontinued operations:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:label="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US">Operating cash flows</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US">Investing cash flows</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:label="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US">Cash Provided by (Used in) Financing Activities, Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US">Financing cash flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US">Financing cash flows</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInDiscontinuedOperations" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInDiscontinuedOperations" xlink:to="us-gaap_NetCashProvidedByUsedInDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperations_lbl" xml:lang="en-US">Net cash provided by (used in) discontinued operations: CASH FLOW</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInDiscontinuedOperations_lbl" xml:lang="en-US">Net cash provided by (used in) discontinued operations:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US">NET INCREASE (DECREASE) IN CASH</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US">NET INCREASE IN CASH</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US">Supplementary disclosures:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPaid" xlink:label="us-gaap_InterestPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaid" xlink:to="us-gaap_InterestPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US">Interest paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US">Interest Paid, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="us-gaap_IncomeTaxesPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaid" xlink:to="us-gaap_IncomeTaxesPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xml:lang="en-US">Income Taxes Paid, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xml:lang="en-US">Income Taxes Paid, Net, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xml:lang="en-US">Taxes paid</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US">Legal Entity [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US">Entity [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US">Entity [Domain]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_InsertTherapeuticsIncMember" xlink:label="arwr_InsertTherapeuticsIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_InsertTherapeuticsIncMember" xlink:to="arwr_InsertTherapeuticsIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_InsertTherapeuticsIncMember_lbl" xml:lang="en-US">Insert Therapeutics Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_InsertTherapeuticsIncMember_lbl" xml:lang="en-US">Insert Therapeutics Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_InsertTherapeuticsIncMember_lbl" xml:lang="en-US">Insert Therapeutics, Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_CalandoPharmaceuticalsIncMember" xlink:label="arwr_CalandoPharmaceuticalsIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_CalandoPharmaceuticalsIncMember" xlink:to="arwr_CalandoPharmaceuticalsIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_CalandoPharmaceuticalsIncMember_lbl" xml:lang="en-US">Calando Pharmaceuticals Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_CalandoPharmaceuticalsIncMember_lbl" xml:lang="en-US">Calando Pharmaceuticals Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_CalandoPharmaceuticalsIncMember_lbl" xml:lang="en-US">Calando Pharmaceuticals, Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_CarbonNanotechnologiesIncMember" xlink:label="arwr_CarbonNanotechnologiesIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_CarbonNanotechnologiesIncMember" xlink:to="arwr_CarbonNanotechnologiesIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_CarbonNanotechnologiesIncMember_lbl" xml:lang="en-US">Carbon Nanotechnologies Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_CarbonNanotechnologiesIncMember_lbl" xml:lang="en-US">Carbon Nanotechnologies Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_CarbonNanotechnologiesIncMember_lbl" xml:lang="en-US">Carbon Nanotechnologies, Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_UnidymIncMember" xlink:label="arwr_UnidymIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_UnidymIncMember" xlink:to="arwr_UnidymIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_UnidymIncMember_lbl" xml:lang="en-US">Unidym Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_UnidymIncMember_lbl" xml:lang="en-US">Unidym Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_UnidymIncMember_lbl" xml:lang="en-US">Unidym, Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_MasaEnergyLlcMember" xlink:label="arwr_MasaEnergyLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_MasaEnergyLlcMember" xlink:to="arwr_MasaEnergyLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_MasaEnergyLlcMember_lbl" xml:lang="en-US">MASA Energy LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_MasaEnergyLlcMember_lbl" xml:lang="en-US">Masa Energy Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_MasaEnergyLlcMember_lbl" xml:lang="en-US">MASA Energy LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_NanoconductionIncMember" xlink:label="arwr_NanoconductionIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_NanoconductionIncMember" xlink:to="arwr_NanoconductionIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_NanoconductionIncMember_lbl" xml:lang="en-US">Nanoconduction Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_NanoconductionIncMember_lbl" xml:lang="en-US">Nanoconduction Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_NanoconductionIncMember_lbl" xml:lang="en-US">Nanoconduction, Inc [Member]</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_CommonStockPurchasedFromMinorityShareHolders" xlink:label="arwr_CommonStockPurchasedFromMinorityShareHolders" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_CommonStockPurchasedFromMinorityShareHolders" xlink:to="arwr_CommonStockPurchasedFromMinorityShareHolders_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_CommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">Shares of a subsidiary received from the subsidiary noncontrolling owner, in exchange for consideration (shares and cash).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_CommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">Common Stock Purchased From Minority Share Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_CommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">Purchase of common shares</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders" xlink:label="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders" xlink:to="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">The value of the common stock and cash issued for shares of a subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">Value Of Common Stock Purchased From The Minority Share Holders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ValueOfCommonStockPurchasedFromMinorityShareHolders_lbl" xml:lang="en-US">Value of common stock purchased</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ValueOfCommonStockPurchasedByCash" xlink:label="arwr_ValueOfCommonStockPurchasedByCash" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ValueOfCommonStockPurchasedByCash" xlink:to="arwr_ValueOfCommonStockPurchasedByCash_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ValueOfCommonStockPurchasedByCash_lbl" xml:lang="en-US">Total value of common stock purchased by cash.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ValueOfCommonStockPurchasedByCash_lbl" xml:lang="en-US">Value Of Common Stock Purchased By Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ValueOfCommonStockPurchasedByCash_lbl" xml:lang="en-US">Stock purchased by cash</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_WarrantsIssued" xlink:label="arwr_WarrantsIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_WarrantsIssued" xlink:to="arwr_WarrantsIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_WarrantsIssued_lbl" xml:lang="en-US">Warrants issued to purchase common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_WarrantsIssued_lbl" xml:lang="en-US">Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_WarrantsIssued_lbl" xml:lang="en-US">Warrants issued</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_WarrantsPurchased" xlink:label="arwr_WarrantsPurchased" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_WarrantsPurchased" xlink:to="arwr_WarrantsPurchased_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_WarrantsPurchased_lbl" xml:lang="en-US">Warrants received to purchase common stock of subsidiary.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_WarrantsPurchased_lbl" xml:lang="en-US">Warrants Purchased</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_WarrantsPurchased_lbl" xml:lang="en-US">Warrants purchased</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_ExercisePriceOfWarrants" xlink:label="arwr_ExercisePriceOfWarrants" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_ExercisePriceOfWarrants" xlink:to="arwr_ExercisePriceOfWarrants_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_ExercisePriceOfWarrants_lbl" xml:lang="en-US">Exercise price of warrants for common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_ExercisePriceOfWarrants_lbl" xml:lang="en-US">Exercise Price Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_ExercisePriceOfWarrants_lbl" xml:lang="en-US">Common stock exercise value</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_WarrantsExercised" xlink:label="arwr_WarrantsExercised" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_WarrantsExercised" xlink:to="arwr_WarrantsExercised_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_WarrantsExercised_lbl" xml:lang="en-US">Warrants exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_WarrantsExercised_lbl" xml:lang="en-US">Warrants Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_WarrantsExercised_lbl" xml:lang="en-US">Warrants exercised</label>
    <loc xlink:type="locator" xlink:href="arwr-20110930.xsd#arwr_StockIssuedAgainstWarrants" xlink:label="arwr_StockIssuedAgainstWarrants" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="arwr_StockIssuedAgainstWarrants" xlink:to="arwr_StockIssuedAgainstWarrants_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="arwr_StockIssuedAgainstWarrants_lbl" xml:lang="en-US">Stock issued against warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="arwr_StockIssuedAgainstWarrants_lbl" xml:lang="en-US">Stock Issued Against Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="arwr_StockIssuedAgainstWarrants_lbl" xml:lang="en-US">Stock issued against warrants</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US">Organization And Significant Accounting Policies [Abstract]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US">Organization and Significant Accounting Policies.</label>
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