SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                              AMENDED SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 20)*

                               GENTA INCORPORATED
                               ------------------
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $.001 PER SHARE
                     ---------------------------------------
                         (Title of Class of Securities)

                                  372 45 M 20 7
                                  -------------
                                 (CUSIP Number)

                   Paramount BioCapital Asset Management, Inc.
                         c/o Lindsay A. Rosenwald, M.D.
                               787 Seventh Avenue
                               New York, NY 10019
                                 (212) 554-4300

                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                   MAY 5, 2004
                                   -----------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following: |_|

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


                                  Page 1 of 14



--------------------------------------------------------------------------------
CUSIP No. 372 45 M 20 7                 13D                   Page 2 of 14 Pages
--------------------------------------------------------------------------------

1        NAMES OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Paramount BioCapital Asset Management, Inc.

--------------------------------------------------------------------------------

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) |_|
                                                                         (b)  X

--------------------------------------------------------------------------------

3        SEC USE ONLY

--------------------------------------------------------------------------------

4        SOURCE OF FUNDS*

         OO (see Item 3)

--------------------------------------------------------------------------------

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) or 2(e)                                                   |_|

--------------------------------------------------------------------------------

6        CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

--------------------------------------------------------------------------------
         NUMBER OF
          SHARES           7        SOLE VOTING POWER
       BENEFICIALLY
         OWNED BY                   None
          EACH
        REPORTING          -----------------------------------------------------
         PERSON            8        SHARED VOTING POWER
          WITH
                                    4,306,532
                           -----------------------------------------------------
                           9        SOLE DISPOSITIVE POWER

                                    None
                           -----------------------------------------------------
                           10       SHARED DISPOSITIVE POWER

                                    4,306,532
--------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         4,306,532

--------------------------------------------------------------------------------

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES*

                                       |_|

--------------------------------------------------------------------------------

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.54%

--------------------------------------------------------------------------------

14       TYPE OF REPORTING PERSON*

         CO

--------------------------------------------------------------------------------



--------------------------------------------------------------------------------
CUSIP No. 372 45 M 20 7                 13D                   Page 3 of 14 Pages
--------------------------------------------------------------------------------

1        NAMES OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Aries Domestic Fund, L.P.

--------------------------------------------------------------------------------

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) |_|
                                                                         (b)  X

--------------------------------------------------------------------------------

3        SEC USE ONLY

--------------------------------------------------------------------------------

4        SOURCE OF FUNDS*

         OO (see Item 3)

--------------------------------------------------------------------------------

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) or 2(e)                                                   |_|

--------------------------------------------------------------------------------

6        CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

--------------------------------------------------------------------------------
         NUMBER OF
          SHARES           7        SOLE VOTING POWER
       BENEFICIALLY
         OWNED BY                   None
          EACH
        REPORTING          -----------------------------------------------------
         PERSON            8        SHARED VOTING POWER
          WITH
                                    1,747,973
                           -----------------------------------------------------
                           9        SOLE DISPOSITIVE POWER

                                    None
                           -----------------------------------------------------
                           10       SHARED DISPOSITIVE POWER

                                    1,747,973
--------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,747,973

--------------------------------------------------------------------------------

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES*

                                       |_|

--------------------------------------------------------------------------------

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         2.3%

--------------------------------------------------------------------------------

14       TYPE OF REPORTING PERSON*

         PN

--------------------------------------------------------------------------------



--------------------------------------------------------------------------------
CUSIP No. 372 45 M 20 7                 13D                   Page 4 of 14 Pages
--------------------------------------------------------------------------------

1        NAMES OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Aries Domestic Fund II, LP

--------------------------------------------------------------------------------

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) |_|
                                                                         (b)  X

--------------------------------------------------------------------------------

3        SEC USE ONLY

--------------------------------------------------------------------------------

4        SOURCE OF FUNDS*

         OO (see Item 3)

--------------------------------------------------------------------------------

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) or 2(e)                                                   |_|

--------------------------------------------------------------------------------

6        CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

--------------------------------------------------------------------------------
         NUMBER OF
          SHARES           7        SOLE VOTING POWER
       BENEFICIALLY
         OWNED BY                   None
          EACH
        REPORTING          -----------------------------------------------------
         PERSON            8        SHARED VOTING POWER
          WITH
                                    184,866
                           -----------------------------------------------------
                           9        SOLE DISPOSITIVE POWER

                                    None
                           -----------------------------------------------------
                           10       SHARED DISPOSITIVE POWER

                                    184,866
--------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         184,866

--------------------------------------------------------------------------------

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES*

                                       |_|

--------------------------------------------------------------------------------

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         0.2%

--------------------------------------------------------------------------------

14       TYPE OF REPORTING PERSON*

         PN

--------------------------------------------------------------------------------



--------------------------------------------------------------------------------
CUSIP No. 372 45 M 20 7                 13D                   Page 5 of 14 Pages
--------------------------------------------------------------------------------

1        NAMES OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         The Aries Master Fund II, Ltd.

--------------------------------------------------------------------------------

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) |_|
                                                                         (b)  X

--------------------------------------------------------------------------------

3        SEC USE ONLY

--------------------------------------------------------------------------------

4        SOURCE OF FUNDS*

         OO (see Item 3)

--------------------------------------------------------------------------------

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) or 2(e)                                                   |_|

--------------------------------------------------------------------------------

6        CITIZENSHIP OR PLACE OF ORGANIZATION

         Cayman Islands

--------------------------------------------------------------------------------
         NUMBER OF
          SHARES           7        SOLE VOTING POWER
       BENEFICIALLY
         OWNED BY                   None
          EACH
        REPORTING          -----------------------------------------------------
         PERSON            8        SHARED VOTING POWER
          WITH
                                    2,373,693
                           -----------------------------------------------------
                           9        SOLE DISPOSITIVE POWER

                                    None
                           -----------------------------------------------------
                           10       SHARED DISPOSITIVE POWER

                                    2,373,693
--------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         2,373,693

--------------------------------------------------------------------------------

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES*

                                       |_|

--------------------------------------------------------------------------------

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         3.0%

--------------------------------------------------------------------------------

14       TYPE OF REPORTING PERSON*

         OO (see Item 2)

--------------------------------------------------------------------------------



--------------------------------------------------------------------------------
CUSIP No. 372 45 M 20 7             13D                       Page 6 of 14 Pages
--------------------------------------------------------------------------------

1        NAMES OF REPORTING PERSONS
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Lindsay A. Rosenwald

--------------------------------------------------------------------------------

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                (a) |_|
                                                                         (b)  X

--------------------------------------------------------------------------------

3        SEC USE ONLY

--------------------------------------------------------------------------------

4        SOURCE OF FUNDS*

         OO (see Item 3)

--------------------------------------------------------------------------------

5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEM 2(d) or 2(e)                                                   |_|

--------------------------------------------------------------------------------

6        CITIZENSHIP OR PLACE OF ORGANIZATION

         United States

--------------------------------------------------------------------------------
         NUMBER OF
          SHARES           7        SOLE VOTING POWER
       BENEFICIALLY
         OWNED BY                   3,330,522
          EACH
        REPORTING          -----------------------------------------------------
         PERSON            8        SHARED VOTING POWER
          WITH
                                    4,306,532
                           -----------------------------------------------------
                           9        SOLE DISPOSITIVE POWER

                                    3,330,522
                           -----------------------------------------------------
                           10       SHARED DISPOSITIVE POWER

                                    4,306,532
--------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         7,637,054

--------------------------------------------------------------------------------

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES*

                                       |_|

--------------------------------------------------------------------------------

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         9.4%

--------------------------------------------------------------------------------

14       TYPE OF REPORTING PERSON*

         OO (see Item 2)

--------------------------------------------------------------------------------



This  Amendment  No.  20  amends  and  supplements  the  following  items of the
Statement  on  Schedule  13D filed by certain of the  reporting  persons,  dated
February 24, 1997, as amended to date (the "Schedule").

ITEM 2. IDENTITY AND BACKGROUND

      Item 2 is hereby amended in its entirety to read as follows:

      (a)   This  statement  is filed on behalf of  Paramount  BioCapital  Asset
            Management,  Inc.  ("PCAM"),  Aries Select,  Ltd. ("Aries  Select"),
            Aries Select,  LLC ("AS1") and Dr.  Lindsay A.  Rosenwald  (together
            with PCAM and Aries  Select the "Aries  Reporting  Persons"),  Aries
            Select II, LLC ("AS2"),  Aries Domestic  Fund,  L.P.  ("ADF1"),  The
            Aries Master Fund II, a Cayman Island exempted company ("AMF2"), and
            Aries  Domestic Fund II, L.P.  ("ADF2" and,  together with the Aries
            Reporting  Persons,  the "Filing  Persons").  See attached Exhibit A
            which is a copy of their agreement in writing to file this statement
            jointly on behalf of each of them. The Filing Persons have made, and
            will continue to make, their own investment decisions.

      (b)   The business address of Dr. Rosenwald, PCAM, Aries Select, AS1, AS2,
            Aries  Domestic and Aries  Domestic II is 787 Seventh  Avenue,  48th
            Floor,  New York,  New York 10019.  The  business  address for Aries
            Select and AMF2 is c/o Fortis Fund Services,  P.O. Box 2003, British
            American  Centre,  Phase 3, Dr.  Roy's  Drive,  George  Town,  Grand
            Cayman.

      (c)   Dr.  Rosenwald is an investment  banker,  venture  capitalist,  fund
            manager and sole  shareholder  of PCAM,1 a Subchapter S  corporation
            incorporated  in the State of Delaware.  PCAM is the managing member
            of each of AS1 and AS2,  the General  Partner of Aries  Domestic and
            Aries Domestic II, each a limited  partnership  organized  under the
            laws of  Delaware  and the  investment  manager  to AMF2  and  Aries
            Select2, each a Cayman Island exempted company.

      (d)   The Filing Persons and their respective officers, directors, general
            partners,  investment  managers,  and trustees have not,  during the
            five years prior to the date  hereof,  been  convicted in a criminal
            proceeding (excluding traffic violations or similar misdemeanors).

      (e)   The Filing Persons and their respective officers, directors, general
            partners,  investment  managers,  and trustees have not been, during
            the  five  years  prior  to the  date  hereof,  parties  to a  civil
            proceeding  of  a  judicial  or  administrative  body  of  competent
            jurisdiction,  as a result of which such person was or is subject to
            a judgment, decree or final order enjoining future violations of, or
            prohibiting  or mandating  activities  subject to,  Federal or State
            securities laws or funding any violation with respect to such laws.

      (f)   Dr. Rosenwald is a citizen of the United States.

-----------------------
1     Please see Exhibit B, filed  herewith,  indicating the executive  officers
      and directors of PCAM and providing information called for by Items 2-6 of
      this statement as to said officers and directors.

2     Please see Exhibit C indicating  the  executive  officers and directors of
      AMF2 and Aries Select and providing information called for by Items 2-6 of
      this statement as to said officers and directors.


                                  Page 7 of 14




ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

      The  information  contained in Item 3 to the Schedule is hereby amended by
adding the following:

      On May 3, 2004, pursuant to Rule 144 (a) AMF2 sold 1,501,900 Shares of the
Issuer  at a price  equal  to  $5.05  for  aggregate  gross  proceeds  equal  to
$7,584,595,  (b) ADF sold  1,128,700  shares of the  Issuer at a price  equal to
$5.05 for aggregate gross proceeds equal to $5,699,935 and (c) ADF2 sold 119,400
Shares of the  Issuer at a price  equal to $5.05 for  aggregate  gross  proceeds
equal to $602,970.

      On May 4, 2004, pursuant to Rule 144 (a) AMF2 sold 3,446,300 Shares of the
Issuer  at a price  equal  to  $4.92  for  aggregate  gross  proceeds  equal  to
$16,955,796.00,  (b) ADF sold 2,589,800 shares of the Issuer at a price equal to
$4.92 for aggregate  gross  proceeds equal to  $12,741,816.00  and (c) ADF2 sold
273,900  Shares of the  Issuer at a price  equal to $5.05  for  aggregate  gross
proceeds equal to $1,170,468.

      On May 5, 2004,  pursuant to Rule 144 (a) AMF2 sold 513,400  Shares of the
Issuer  at a price  equal  to  $4.95  for  aggregate  gross  proceeds  equal  to
$2,541,330,  (b) ADF sold 385,800 shares of the Issuer at a price equal to $4.95
for aggregate gross proceeds equal to $1,909,710 and (c) ADF2 sold 40,800 Shares
of the Issuer at a price equal to $4.95 for aggregate  gross  proceeds  equal to
$201,960.

ITEM 4. PURPOSE OF THE TRANSACTION.

      On May 3,  2004,  May 4,  2004  and May 5,  2004,  the  Reporting  Persons
substantially reduced its ownership position in the Issuer.

      The Reporting  Persons  currently hold the securities  reported  herein as
being beneficially owned by them for investment purposes.  Depending upon market
conditions  and other  factors that the  Reporting  Persons may deem material to
their  respective  investment  decisions,  the  Reporting  Persons may  purchase
additional  securities  of  the  Company  in  the  open  market  or  in  private
transactions,  or may  dispose  of all or a  portion  of the  securities  of the
Company  that the  Reporting  Persons own or hereafter  may  acquire.  Except as
otherwise set forth herein,  none of the persons or entities named in Item 2 has
any plans or proposals  which relate to, or could result,  in any of the matters
referred to in Paragraphs (b) through (j) of Item 4 of Schedule 13D.

      The Filing  Persons  may  formulate  other  purposes,  plans or  proposals
relating to any of such securities of the Issuer to the extent deemed  advisable
in light of market conditions, investment policies and other factors.


                                  Page 8 of 14




ITEM 5. INTEREST IN SECURITIES OF ISSUER.

      The information  contained in Item 5 to the Schedule is hereby amended and
supplemented to read as follows:

      (a)   As of May 5, 2004, the Filing Persons may be deemed to  beneficially
            own the following:

            (i)   ARIES SELECT: 0 Shares (0%);

            (ii)  AS1: 0 Shares (0%);

            (iii) AS2: 0 Shares (0%);

            (iv)  AMF2: 2,373,693 Shares (3.0%);

            (v)   ARIES DOMESTIC: 1,747,973 Shares (2.3%);

            (vi)  ARIES DOMESTIC II: 184,866 Shares (0.2%);

            (vii) PCAM: 4,306,532 Shares (5.5%), comprised of the Shares held by
      AMF2, Aries Domestic and Aries Domestic II; and

            (viii) DR. ROSENWALD:  7,637,054 Shares (9.4%),  comprised of 25,000
      Shares  and  3,305,522  Shares  issuable  upon  exercise  of Common  Stock
      purchase  warrants  held directly by Dr.  Rosenwald  and 4,306,532  Shares
      beneficially owned by PCAM.

      Pursuant to Rule 13d-4  promulgated  under the Securities  Exchange Act of
      1934, as amended,  each Filing Person other than Dr.  Rosenwald  disclaims
      beneficial ownership of the securities held by each other.

      (b)   Dr. Rosenwald and PCAM share the power to vote or to direct the vote
            and to dispose or to direct the disposition of those shares owned by
            each of AMF2, Aries Domestic and Aries Domestic II.

      (c)   The Filing Persons have engaged in the following transactions in the
            Common Stock of the Issuer in the past 60 days:

      On April 22, 2004 AMF2,  Aries  Domestic and Aries Domestic II distributed
      6,267,  43,673  and  37,225  Shares,  respectively  to  certain  redeeming
      investors  and on April  27,  2004  AMF2 and  Aries  Domestic  distributed
      159,741 and 1,107 Shares, respectively to certain redeeming investors.

      Please see Item 3 for additional transactions

      (d)   Dr.  Rosenwald,  as the sole  shareholder  of PCAM, has the right to
            participate  in the receipt of dividends  from, or proceeds from the
            sale  of,  Shares  held by PCAM in  accordance  with  his  ownership
            interests in PCAM.

      (e)   N/A.

Item 7. MATERIAL TO BE FILED AS EXHIBITS:

Exhibit A -    Copy  of  an  Agreement   between the Filing Persons to file this
               Statement on Schedule 13D on behalf of each of them.

Exhibit B -    List  of  executive   officers   and   directors   of   PCAM  and
               information called for by Items 2-6 of this statement relating to
               said officers and directors.

Exhibit C -    List  of  executive  officers  and directors of AMF2 Aries Select
               and  information  called  for  by  Items  2-6 of  this  statement
               relating to said officers and directors.


                                  Page 9 of 14




                                   SIGNATURES

      After  reasonable  inquiry  and to the best  knowledge  and  belief of the
undersigned,  the  undersigned  certify that the  information  set forth in this
statement is true, complete and correct.


                               PARAMOUNT BIOCAPITAL ASSET MANAGEMENT, INC.

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               THE ARIES MASTER FUND

                               By: Paramount BioCapital Asset Management, Inc.
                                   Investment Manager

Dated:     May 6, 2004
           New York, NY        By: ______________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES DOMESTIC FUND, L.P.

                               By: Paramount BioCapital Asset Management, Inc.
                                   General Partner

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES DOMESTIC FUND II, L.P.

                               By: Paramount BioCapital Asset Management, Inc.
                                   General Partner

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES SELECT, LTD.

                               By: Paramount BioCapital Asset Management, Inc.
                                   Investment Manager

Dated:     May 6, 2004
           New York, NY        By: ______________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman


                                  Page 10 of 14




                               ARIES SELECT DOMESTIC, LLC

                               By: Paramount BioCapital Asset Management, Inc.
                                   Managing Member

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES SELECT DOMESTIC II, LLC

                               By: Paramount BioCapital Asset Management, Inc.
                                   Managing Member

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

Dated:     May 6, 2004
           New York, NY            _________________________________
                                   Lindsay A. Rosenwald, M.D.



                                  Page 11 of 14




                                    EXHIBIT A

                                    AGREEMENT

                          JOINT FILING OF SCHEDULE 13D

           The  undersigned  hereby  agree  jointly  to  prepare  and file  with
regulatory  authorities a Schedule 13D and any amendments thereto reporting each
of the  undersigned's  ownership of securities of Genta  Incorporated and hereby
affirm  that  such  Schedule  13D is  being  filed  on  behalf  of  each  of the
undersigned.

                               PARAMOUNT BIOCAPITAL ASSET MANAGEMENT, INC.

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               THE ARIES MASTER FUND

                               By: Paramount BioCapital Asset Management, Inc.
                                   Investment Manager

Dated:     May 6, 2004
           New York, NY        By: ______________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES DOMESTIC FUND, L.P.

                               By: Paramount BioCapital Asset Management, Inc.
                                   General Partner

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES DOMESTIC FUND II, L.P.

                               By: Paramount BioCapital Asset Management, Inc.
                                   General Partner

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES SELECT, LTD.

                               By: Paramount BioCapital Asset Management, Inc.
                                   Investment Manager

Dated:     May 6, 2004
           New York, NY        By: ______________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES SELECT DOMESTIC, LLC

                               By: Paramount BioCapital Asset Management, Inc.
                                   Managing Member

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   Lindsay A. Rosenwald, M.D.
                                   Chairman

                               ARIES SELECT DOMESTIC II, LLC

                               By: Paramount BioCapital Asset Management, Inc.
                                   Managing Member

Dated:     May 6, 2004
           New York, NY        By: ________________________________
                                   A. Rosenwald, M.D.
                                   Chairman

Dated:     May 6, 2004
           New York, NY        _________________________________
                               Lindsay A. Rosenwald, M.D.



                                  Page 12 of 14




                                    EXHIBIT B

      The name and principal  occupation or employment of each executive officer
and director of Paramount BioCapital is as follows:

                                                     PRINCIPAL OCCUPATION
           NAME                                        OR EMPLOYMENT
           ----                                        -------------

Lindsay A. Rosenwald, M.D.          Chairman   of   the   Board   of   Paramount
                                    BioCapital Asset Management,  Inc.,  Horizon
                                    BioMedical  Investments,  LLC and  Paramount
                                    BioCapital, Inc.

Peter Morgan Kash                   Director  of  Paramount   BioCapital   Asset
                                    Management,  Inc., Senior Managing Director,
                                    Paramount BioCapital, Inc.

Dr. Yuichi Iwaki                    Director  of  Paramount   BioCapital   Asset
                                    Management,  Inc., Professor,  University of
                                    Southern California School of Medicine

Item 2.


      During the five years prior to the date hereof,  none of the above persons
(to the  best of  PCAM's  knowledge)  was  convicted  in a  criminal  proceeding
(excluding traffic violations or similar misdemeanors) or was a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction,  as a
result of which such  person was or is  subject to a  judgment,  decree or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  Federal or State  securities  laws or finding any  violation  with
respect to such laws.

Items 3-6.

      Please refer to Items 3-6 herein reporting the beneficial ownership.


                                  Page 13 of 14




                                    EXHIBIT C

           The name and principal  occupation  or  employment of each  executive
officer and director of Aries Trust is as follows:

                                               PRINCIPAL OCCUPATION
           NAME                                   OR EMPLOYMENT
           ----                                   -------------

Peter M. Kash                       Director  of  Paramount   BioCapital   Asset
                                    Management,  Inc., Senior Managing Director,
                                    Paramount   BioCapital,    Inc.   Investment
                                    Manager

Wayne L. Rubin                      Accountant, Independent Director

Fortis Fund Services (Cayman)       Administrator


Exhibit B is hereby incorporated by reference.

Item 2.

           During the five years prior to the date hereof,  neither of the above
persons  (to the best of Aries  Select's  knowledge)  have been  convicted  in a
criminal  proceeding  (excluding traffic violations or similar  misdemeanors) or
was a party  to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction,  as a result of which such person was or is subject to a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, Federal or State securities laws or finding
any violation with respect to such laws.

Items 3-6.

           Please refer to Items 3-6 herein reporting the beneficial ownership.


                                  Page 14 of 14