-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000950142-07-001594.txt : 20070712
<SEC-HEADER>0000950142-07-001594.hdr.sgml : 20070712
<ACCEPTANCE-DATETIME>20070712184831
ACCESSION NUMBER:		0000950142-07-001594
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070710
FILED AS OF DATE:		20070712
DATE AS OF CHANGE:		20070712

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:		345 PARK AVENUE
		STREET 2:		41ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10154
		BUSINESS PHONE:		212-750-6700

	MAIL ADDRESS:	
		STREET 1:		345 PARK AVENUE
		STREET 2:		41ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10154

	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:		07977312

	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:		07977314

	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:			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:		07977316

	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:		212 262 6300

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVENUE
		STREET 2:		33RD FLOOR
		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:		07977318

	BUSINESS ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		SUITE 900
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006-1813
		BUSINESS PHONE:		(212) 373-2958

	MAIL ADDRESS:	
		STREET 1:		2099 PENNSYLVANIA AVE NW
		STREET 2:		SUITE 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:		07977320

	BUSINESS ADDRESS:	
		STREET 1:		ARMY & NAVY CLUB BLDG
		STREET 2:		1627 I ST NW STE 610
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20006
		BUSINESS PHONE:		(212) 651-6389

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		30TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

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:		07977313

	BUSINESS ADDRESS:	
		STREET 1:		888 SEVENTH AVENUE
		STREET 2:		33RD FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		(212) 872-1054

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

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:		07977315

	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:			PERSEUS SOROS PARTNERS LLC
		CENTRAL INDEX KEY:			0001250191

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31787
		FILM NUMBER:		07977319

	BUSINESS ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		30TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		(212) 651-6389

	MAIL ADDRESS:	
		STREET 1:		888 SEVENTH AVE
		STREET 2:		30TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106

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:		07977317

	BUSINESS ADDRESS:	
		STREET 1:		C/O SOROS FUND MANAGEMENT LLC
		STREET 2:		888 SEVENTH AVE 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
		BUSINESS PHONE:		(212) 651-6389

	MAIL ADDRESS:	
		STREET 1:		C/O SOROS FUND MANAGEMENT LLC
		STREET 2:		888 SEVENTH AVE 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10106
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-psbpf071007_bivnex.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-07-10</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001028205</issuerCik>
        <issuerName>BIOENVISION INC</issuerName>
        <issuerTradingSymbol>BIVN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001111408</rptOwnerCik>
            <rptOwnerName>PERSEUS SOROS BIOPHARMACEUTICAL FUND LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVE</rptOwnerStreet1>
            <rptOwnerStreet2>30TH 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>0001250191</rptOwnerCik>
            <rptOwnerName>PERSEUS SOROS PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVE</rptOwnerStreet1>
            <rptOwnerStreet2>30TH FL</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>0001250198</rptOwnerCik>
            <rptOwnerName>PERSEUS BIOTECH FUND PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVE NW</rptOwnerStreet1>
            <rptOwnerStreet2>STE 900</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>0001253598</rptOwnerCik>
            <rptOwnerName>SFM PARTICIPATION LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SOROS FUND MANAGEMENT LLC</rptOwnerStreet1>
            <rptOwnerStreet2>888 SEVENTH AVENUE, 31ST 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>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>
        </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 AVE NW</rptOwnerStreet1>
            <rptOwnerStreet2>STE 900</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>0000927752</rptOwnerCik>
            <rptOwnerName>PEARL FRANK H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2099 PENNSYLVANIA AVENUE NW</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 900</rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20003</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>0000900203</rptOwnerCik>
            <rptOwnerName>SOROS GEORGE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>888 SEVENTH AVE</rptOwnerStreet1>
            <rptOwnerStreet2>33RD FLR</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>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-07-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3375044</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.60</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series A Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F5"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-07-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2250000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4500000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">All of the securities reported herein are held directly for the account of Perseus-Soros BioPharmaceutical Fund, LP
 (&quot;Perseus-Soros&quot;) and indirectly by all of the other Reporting Persons, pursuant to the relationships set forth in this
 footnote (1) and footnote (2). 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. Perseuspur, L.L.C., a Delaware limited liability company (&quot;Perseuspur&quot;), is the managing member of
 Perseus Partners.</footnote>
        <footnote id="F2">Mr. Frank Pearl (&quot;Mr. Pearl&quot;) is the sole member of Perseuspur and in such capacity may be deemed a beneficial owner of
 securities held for the account of Perseus-Soros.  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 (&quot;Mr. Soros&quot;) is the Chairman of SFM LLC and may be deemed a beneficial
 owner of securities held for the account of Perseus-Soros.</footnote>
        <footnote id="F3">Pursuant to Rule 16a-1(a)(2)(ii)(B) under the Securities Exchange Act of 1934, as amended (the &quot;Act&quot;), Perseus-Soros
 Partners, Perseus Partners, SFM Participation, Perseuspur, Mr. Pearl, SFM AH, SFM LLC, and Mr. Soros are deemed to be
 beneficial owners of the shares beneficially owned by Perseus-Soros only to the extent of the greater of 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, Perseuspur,
 Mr. Pearl, SFM AH, SFM LLC, or Mr. Soros 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>
        <footnote id="F4">In accordance with the Agreement and Plan of Merger, dated as of May 29, 2007, among Genzyme Corporation, a Massachusetts
 corporation (&quot;Parent&quot;), the issuer and Wichita Bio Corporation, a Delaware corporation and a direct or indirect wholly-owned
 subsidiary of Genzyme Corporation (&quot;MergerSub&quot;), and the Tender and Voting Agreement, dated May 29, 2007, among
 Perseus-Soros, Parent and MergerSub, Perseus-Soros tendered all of its shares of Common Stock and Series A Convertible
 Preferred Stock in exchange for consideration equal to $5.60 per share of Common Stock and $11.20 per share of Series A
 Convertible Preferred Stock, plus any accrued but unpaid dividends with respect to such Series A Convertible Preferred
 Stock. On July 10, 2007, MergerSub accepted such shares for payment.</footnote>
        <footnote id="F5">Each share of Series A Convertible Preferred Stock was convertible into two shares of Common Stock at any time and had no
 expiration date.</footnote>
    </footnotes>

    <remarks>(6)    Ms. Anzalotta is signing in her capacity as Ass't. General Counsel of Soros Fund Management LLC, as Managing Member of
 SFM AH LLC, as General Partner of SFM Participation, L.P., as Managing Member of Perseus-Soros Partners, LLC, as General
 Partner of Perseus-Soros BioPharmaceutical Fund, LP.
(7)    Ms. Anzalotta is signing in her capacity as Ass't. General Counsel of Soros Fund Management LLC, as Managing Member of
 SFM AH LLC, as General Partner of SFM Participation, L.P., as Managing Member of Perseus-Soros Partners, LLC.
(8)    Ms. Kennedy is signing in her capacity as Secretary and Treasurer of Perseuspur, L.L.C., as Managing Member of Perseus
 BioTech Fund Partners, LLC.
(9)    Ms. Anzalotta is signing in her capacity as Ass't. General Counsel of Soros Fund Management LLC, as Managing Member of
 SFM AH LLC, as General Partner of SFM Participation, L.P.
(10)    Ms. Anzalotta is signing in her capacity as Ass't. General Counsel of Soros Fund Management LLC, as Managing Member
 of SFM AH LLC.
(11)    Ms. Kennedy is signing in her capacity as Secretary and Treasurer of Perseuspur, L.L.C.
(12)    Ms. Kennedy is signing in her capacity as Attorney-in-Fact for Mr. Pearl.
(13)    Ms. Anzalotta is signing in her capacity as Ass't General Counsel of Soros Fund Management LLC.
(14)    Ms. Anzalotta is signing in her capacity as Attorney-in-Fact for Mr. Soros.</remarks>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Assistant General Counsel (6)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Assistant General Counsel (7)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Rona Kennedy, Secretary and Treasurer (8)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Assistant General Counsel (9)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Assistant General Counsel (10)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Rona Kennedy, Secretary and Treasurer (11)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Rona Kennedy, Attorney-in-Fact (12)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Assistant General Counsel (13)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Jodye Anzalotta, Attorney-in-Fact (14)</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----