-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001381825-09-000004.txt : 20090420
<SEC-HEADER>0001381825-09-000004.hdr.sgml : 20090420
<ACCEPTANCE-DATETIME>20090417190107
ACCESSION NUMBER:		0001381825-09-000004
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20090420
DATE AS OF CHANGE:		20090417
EFFECTIVENESS DATE:		20090420

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CELL BIOSCIENCES INC
		CENTRAL INDEX KEY:			0001381825
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-96789
		FILM NUMBER:		09757873

	BUSINESS ADDRESS:	
		STREET 1:		1050 PAGE MILL RD
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94304
		BUSINESS PHONE:		650 859 1485

	MAIL ADDRESS:	
		STREET 1:		1050 PAGE MILL RD
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94304
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
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<edgarSubmission>

    <schemaVersion>X0301</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001381825</cik>
        <entityName>CELL BIOSCIENCES INC</entityName>
        <issuerAddress>
            <street1>1050 PAGE MILL RD</street1>
            <street2></street2>
            <city>PALO ALTO</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>94304</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>650 859 1485</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DE</jurisdictionOfInc>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Timothy</firstName>
                <middleName></middleName>
                <lastName>Harkness</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cell Biosciences, Inc.</street1>
                <street2>1050 Page Mill Road</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94304</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName></middleName>
                <lastName>Barker</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cell Biosciences, Inc.</street1>
                <street2>1050 Page Mill Road</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94304</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName></middleName>
                <lastName>Blair</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Domain Associates</street1>
                <street2>One Palmer Square, Suite 515</street2>
                <city>Princeton</city>
                <stateOrCountry>NJ</stateOrCountry>
                <zipCode>08542</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>A.</firstName>
                <middleName>Blaine</middleName>
                <lastName>Bowman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cell Biosciences, Inc.</street1>
                <street2>1050 Page Mill Road</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94304</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Julie</firstName>
                <middleName></middleName>
                <lastName>Eskay-Eagle</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o The Wellcome Trust</street1>
                <street2>Gildos Building, 215 Euston Road</street2>
                <city>London</city>
                <stateOrCountry>X0</stateOrCountry>
                <zipCode>NW1 2BE</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jack</firstName>
                <middleName></middleName>
                <lastName>Nielson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Novo A/S</street1>
                <street2>Krogshoejvej 41</street2>
                <city>Bagsvaerd</city>
                <stateOrCountry>G7</stateOrCountry>
                <zipCode>DK 2880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName></middleName>
                <lastName>Woody</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Latterell Venture Partners</street1>
                <street2>1 Embarcadero Center, Suite 4050</street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName></middleName>
                <lastName>Novi</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cell Biosciences, Inc.</street1>
                <street2>1050 Page Mill Road</street2>
                <city>Palo Alto</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94304</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Biotechnology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-04-09</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Offering of Series C Preferred Stock (the &quot;Series C&quot;) and the underlying shares of Common Stock issuable upon conversion of the Series C.</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>10592611</totalOfferingAmount>
            <totalAmountSold>5000004</totalAmountSold>
            <totalRemaining>5592607</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>11</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>CELL BIOSCIENCES INC</issuerName>
                <signatureName>/s/ Timothy Harkness</signatureName>
                <nameOfSigner>Timothy Harkness</nameOfSigner>
                <signatureTitle>President and CEO</signatureTitle>
                <signatureDate>2009-04-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----