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    <element id="CVM_PrivateInvestorWarrants1Member" name="PrivateInvestorWarrants1Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_PrivateInvestorWarrants2Member" name="PrivateInvestorWarrants2Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_PrivateInvestorWarrants3Member" name="PrivateInvestorWarrants3Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesSMember" name="SeriesSMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesTMember" name="SeriesTMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesUMember" name="SeriesUMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_BasicEpsMember" name="BasicEpsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_DilutiveEpsMember" name="DilutiveEpsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_DerivativeLiabilitiesGainMember" name="DerivativeLiabilitiesGainMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_BasicAndDilutiveEPSMember" name="BasicAndDilutiveEPSMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesKAndLWarrantsMember" name="SeriesKAndLWarrantsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesKAndSeriesAThroughEWarrantsMember" name="SeriesKAndSeriesAThroughEWarrantsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesVMember" name="SeriesVMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesWMember" name="SeriesWMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesXMember" name="SeriesXMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesYMember" name="SeriesYMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesZMember" name="SeriesZMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesZZMember" name="SeriesZZMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesAAMember" name="SeriesAAMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesBBMember" name="SeriesBBMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_RestrictedStockAwardsMember" name="RestrictedStockAwardsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SanTomasMember" name="SanTomasMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesCCMember" name="SeriesCCMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesDDMember" name="SeriesDDMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesEEMember" name="SeriesEEMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesFFMember" name="SeriesFFMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesGGMember" name="SeriesGGMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesHHMember" name="SeriesHHMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesIIMember" name="SeriesIIMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesJJMember" name="SeriesJJMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesKKMember" name="SeriesKKMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesLLMember" name="SeriesLLMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesMMMember" name="SeriesMMMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesNNMember" name="SeriesNNMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesOOMember" name="SeriesOOMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesQQMember" name="SeriesQQMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesPPMember" name="SeriesPPMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesRRMember" name="SeriesRRMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesSSMember" name="SeriesSSMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesTTMember" name="SeriesTTMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesWWMember" name="SeriesWWMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesVVMember" name="SeriesVVMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_SeriesUUMember" name="SeriesUUMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_OperationsAndFinancingAbstract" name="OperationsAndFinancingAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_RevisionOfPriorPeriodFinancialStatementsForCorrectionOfImmaterialErrorsAbstract" name="RevisionOfPriorPeriodFinancialStatementsForCorrectionOfImmaterialErrorsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_IssueStartDate" name="IssueStartDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_IssueEndDate1" name="IssueEndDate1" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_ExpirationStartDate" name="ExpirationStartDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_ExpirationEndDate" name="ExpirationEndDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_ExercisePriceMinimum" name="ExercisePriceMinimum" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_ExercisePriceMaximum" name="ExercisePriceMaximum" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="CVM_WeightedAverageExercisePriceCancelled" name="WeightedAverageExercisePriceCancelled" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
</schema>
