-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001111408-04-000002.txt : 20040517
<SEC-HEADER>0001111408-04-000002.hdr.sgml : 20040517
<ACCEPTANCE-DATETIME>20040517174145
ACCESSION NUMBER:		0001111408-04-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040513
FILED AS OF DATE:		20040517

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SFM PARTICIPATION LP
		CENTRAL INDEX KEY:			0001253598
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813993

	MAIL ADDRESS:	
		STREET 1:		C/O SOROS FUND MANAGEMENT LLC
		STREET 2:		888 SEVENTH AVE 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERSEUS SOROS PARTNERS LLC
		CENTRAL INDEX KEY:			0001250191

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813995

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		29TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERSEUS BIOTECH FUND PARTNERS LLC
		CENTRAL INDEX KEY:			0001250198
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813994

	MAIL ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		STE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERSEUS SOROS BIOPHARMACEUTICAL FUND LP
		CENTRAL INDEX KEY:			0001111408

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813996

	BUSINESS ADDRESS:	
		STREET 1:		ARMY & NAVY CLUB BLDG
		STREET 2:		1627 I ST NW STE 610
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		29TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERSEUS EC LLC
		CENTRAL INDEX KEY:			0001253319

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813987

	BUSINESS ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		STE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813

	MAIL ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		STE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERSEUSPUR LLC
		CENTRAL INDEX KEY:			0001253323

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813986

	BUSINESS ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		STE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813

	MAIL ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		STE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SFM AH LLC
		CENTRAL INDEX KEY:			0001237655
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813992

	BUSINESS ADDRESS:	
		STREET 1:		C/O SOROS FUND MANAGEMENT LLC
		STREET 2:		888 SEVENTH AVENUE 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		2122626300

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOENVISION INC
		CENTRAL INDEX KEY:			0001028205
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				113375915
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		ONE ROCKEFELLER PLAZA
		STREET 2:		SUITE 1600
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020
		BUSINESS PHONE:		2124456581

	MAIL ADDRESS:	
		STREET 1:		ONE ROCKEFELLER PLAZA
		STREET 2:		SUITE 1600
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ASCOT GROUP INC
		DATE OF NAME CHANGE:	19961205

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SOROS GEORGE
		CENTRAL INDEX KEY:			0000900203
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813989

	BUSINESS ADDRESS:	
		STREET 1:		888 SEVENTH AVENUE
		STREET 2:		33RD FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		212-262--6

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		33RD FLR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PEARL FRANK H
		CENTRAL INDEX KEY:			0000927752

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813990

	BUSINESS ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVENUE NW
		STREET 2:		SUITE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006
		BUSINESS PHONE:		2024520101

	MAIL ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVENUE NW
		STREET 2:		SUITE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SOROS FUND MANAGEMENT LLC
		CENTRAL INDEX KEY:			0001029160
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		04813988

	BUSINESS ADDRESS:	
		STREET 1:		888 SEVENTH AVENUE 33RD FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		2128721054

	MAIL ADDRESS:	
		STREET 1:		C/O AKIN, GUMP, STRAUSS,HAUER,FELD,
		STREET 2:		399 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
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    <periodOfReport>2004-05-13</periodOfReport>

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        <issuerName>BIOENVISION INC</issuerName>
        <issuerTradingSymbol>BIV</issuerTradingSymbol>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001111408</rptOwnerCik>
            <rptOwnerName>PERSEUS SOROS BIOPHARMACEUTICAL FUND LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001250191</rptOwnerCik>
            <rptOwnerName>PERSEUS SOROS PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20006-1813</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001250198</rptOwnerCik>
            <rptOwnerName>PERSEUS BIOTECH FUND PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20006-1813</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253598</rptOwnerCik>
            <rptOwnerName>SFM PARTICIPATION LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>33RD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001237655</rptOwnerCik>
            <rptOwnerName>SFM AH LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>33RD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000927752</rptOwnerCik>
            <rptOwnerName>PEARL FRANK H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20006-1813</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
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            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000900203</rptOwnerCik>
            <rptOwnerName>SOROS GEORGE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001029160</rptOwnerCik>
            <rptOwnerName>SOROS FUND MANAGEMENT LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>33RD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253319</rptOwnerCik>
            <rptOwnerName>PERSEUS EC LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20006-1813</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253323</rptOwnerCik>
            <rptOwnerName>PERSEUSPUR LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20006-1813</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, $0.001 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-05-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>375044</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.25</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>375044</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Warrants (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.50</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-05-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>75009</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-05-13</value>
            </exerciseDate>
            <expirationDate>
                <value>2009-05-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>75009</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>75009</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">All of the securities reported herein are held for the account of Perseus-Soros BioPharmaceutical Fund, L.P., a Delaware limited partnership (&quot;Perseus-Soros&quot;).  Perseus-Soros Partners, LLC, a Delaware limited liability company (&quot;Perseus-Soros Partners&quot;), is the general partner of Perseus-Soros.  Perseus BioTech Fund Partners, LLC, a Delaware limited liability company (&quot;Perseus Partners&quot;), and SFM Participation, L.P., a Delaware limited partnership (&quot;SFM Participation&quot;), are the managing members of Perseus-Soros Partners.  Perseus EC, L.L.C., a Delaware limited liability company (&quot;Perseus EC&quot;), is the managing member of Perseus Partners.  Perseuspur, LLC, a Delaware limited liability company (&quot;Perseuspur), is a member of Perseus EC.  Mr. Frank H. Pearl (&quot;Mr. Pearl&quot;) is the sole member of Perseuspur.</footnote>
        <footnote id="F2">SFM AH LLC, a Delaware limited liability company (&quot;SFM AH&quot;), is the general partner of SFM Participation.  The sole managing member of SFM AH is Soros Fund Management LLC, a Delaware limited liability company (&quot;SFM LLC&quot;).  Mr. George Soros serves as Chairman of SFM LLC.</footnote>
        <footnote id="F3">The Shares and the warrants to purchase Shares reported herein were acquired by Perseus-Soros pursuant to a common stock and warrant purchase agreement.  Pursuant to this agreement, Perseus-Soros acquired one warrant for every five Shares purchased pursuant to the agreement.  Perseus-Soros paid the Issuer approximately $2,344,025 in exchange for the securities reported herein.</footnote>
        <footnote id="F4">Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended (the &quot;Act&quot;), Perseus-Soros Partners, Perseus Partners, SFM Participation, Perseus EC, Perseuspur, Mr. Pearl, SFM AH, Mr. Soros and SFM LLC are deemed to be beneficial owners of the securities beneficially owned by Perseus-Soros only to the extent of the greater of his or its respective direct or indirect interest in the profits or capital account of Perseus-Soros.  Pursuant to Rule 16a-1(a)(4) under the Act, this filing shall not be deemed an admission that Perseus-Soros Partners, Perseus Partners, SFM Participation, SFM AH, Perseus EC, Perseuspur, Mr. Pearl, Mr. Soros or SFM LLC is, for purposes of Section 16 of the Act or otherwise, the beneficial owner of any securities owned by Perseus-Soros in excess of such amount.</footnote>
    </footnotes>

    <remarks>(6) Ms. Anzalotta is signing in her capacity as Assistant General Counsel of Soros Fund Management LLC, the Managing Member of SFM AH LLC, the General Partner of SFM Participation, L.P., the Managing Member of Perseus-Soros Partners, L.L.C., the General Partner of Perseus-Soros Biopharmaceutical Fund, L.P. (7) Ms. Anzalotta is signing in her capacity as Assistant General Counsel of Soros Fund Management LLC, the Managing Member of SFM AH LLC, the General Partner of SFM Participation, L.P., the Managing Member of Perseus-Soros Partners, L.L.C. (8) Ms. Anzalotta is signing  in her capacity as Assistant General Counsel of Soros Fund Management LLC, the Managing Member of SFM AH LLC, the General Partner of SFM Participation, L.P. (9) Ms. Anzalotta is signing in her capacity as Assistant General Counsel of Soros Fund Management LLC, the Managing Member of SFM AH LLC.</remarks>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, Perseus BioPharmaceutical Fund, L.P. (6)</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, Perseus-Soros Partners, L.L.C. (7)</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Rodd Macklin, Secretary and Treasurer, Perseus Biotech Fund Partners, LLC</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Rodd Macklin, Secretary and Treasurer, Perseus EC, L.L.C.</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Rodd Macklin, Secretary and Treasurer, Perseuspur, LLC</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Rodd Macklin, Attorney-in-Fact, Mr. Frank H. Pearl</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, SFM Participation, L.P. (8)</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, SFM AH LLC (9)</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, Attorney-in-Fact, Mr. Soros</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jodye Anzalotta, Assistant General Counsel, Soros Fund Management LLC</signatureName>
        <signatureDate>2004-05-17</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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