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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001144204-07-040339.txt : 20070806
<SEC-HEADER>0001144204-07-040339.hdr.sgml : 20070806
<ACCEPTANCE-DATETIME>20070806115539
ACCESSION NUMBER:		0001144204-07-040339
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070613
FILED AS OF DATE:		20070806
DATE AS OF CHANGE:		20070806

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLURISTEM LIFE SYSTEMS INC
		CENTRAL INDEX KEY:			0001158780
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				980351734
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		MATAM ADVANCED TECHNOLOGY PARK
		STREET 2:		BUILDING NO. 20
		CITY:			HAIFA
		STATE:			L3
		ZIP:			31905
		BUSINESS PHONE:		972-4-850-1080

	MAIL ADDRESS:	
		STREET 1:		MATAM ADVANCED TECHNOLOGY PARK
		STREET 2:		BUILDING NO. 20
		CITY:			HAIFA
		STATE:			L3
		ZIP:			31905

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AI SOFTWARE INC
		DATE OF NAME CHANGE:	20010906

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wood River Trust
		CENTRAL INDEX KEY:			0001408235
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31392
		FILM NUMBER:		071026775

	BUSINESS ADDRESS:	
		STREET 1:		1007 ORANGE STREET, SUITE 1410
		STREET 2:		NEMOURS BUILDING
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19801
		BUSINESS PHONE:		302-472-9103

	MAIL ADDRESS:	
		STREET 1:		1007 ORANGE STREET, SUITE 1410
		STREET 2:		NEMOURS BUILDING
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19801

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Doyle Michael C.
		CENTRAL INDEX KEY:			0001408196

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31392
		FILM NUMBER:		071026776

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		302-472-9103

	MAIL ADDRESS:	
		STREET 1:		1007 ORANGE STREET, SUITE 1410
		STREET 2:		NEMOURS BUILDING
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19801
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v082992_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-06-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001158780</issuerCik>
        <issuerName>PLURISTEM LIFE SYSTEMS INC</issuerName>
        <issuerTradingSymbol>PLRS.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001408235</rptOwnerCik>
            <rptOwnerName>Wood River Trust</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1007 ORANGE STREET, SUITE 1410</rptOwnerStreet1>
            <rptOwnerStreet2>NEMOURS BUILDING</rptOwnerStreet2>
            <rptOwnerCity>WILMINGTON</rptOwnerCity>
            <rptOwnerState>DE</rptOwnerState>
            <rptOwnerZipCode>19801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001408196</rptOwnerCik>
            <rptOwnerName>Doyle Michael C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1007 ORANGE STREET, SUITE 1410</rptOwnerStreet1>
            <rptOwnerStreet2>NEMOURS BUILDING</rptOwnerStreet2>
            <rptOwnerCity>WILMINGTON</rptOwnerCity>
            <rptOwnerState>DE</rptOwnerState>
            <rptOwnerZipCode>19801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.00001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2007-06-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0250</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-06-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>26693227</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0937</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>173306773</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.025</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-06-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-06-13</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-05-14</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>100000000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These securities are owned directly by Wood River Trust.  Michael C. Doyle is the sole Trustee of Wood River Trust and, in
 such capacity, may be deemed indirectly to beneficially own the securities owned by the Wood River Trust.</footnote>
        <footnote id="F2">Wood River Trust consummated a cashless exercise of the Warrants, pursuant to which 26,693,227 shares of Common Stock
 otherwise issuable upon exercise of such Warrants were forfeited in lieu of paying the cash exercise price.</footnote>
        <footnote id="F3">These Warrants were included in Units consisting of 1 share of Common Stock and 1 Warrant that were purchased for $0.0125 per
 Unit.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Wood River Trust By: /s/ Michael C. Doyle, Trustee</signatureName>
        <signatureDate>2007-08-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Michael C. Doyle</signatureName>
        <signatureDate>2007-08-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
