SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                              AMENDED SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 21)*

                               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 6, 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 13



---------------------------                                 --------------------
  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
--------------- ----------------------------------------------------------------
                         7       SOLE VOTING POWER

                                 None
   NUMBER OF        ------------ -----------------------------------------------
     SHARES              8       SHARED VOTING POWER
  BENEFICIALLY
    OWNED BY                     1,751,532
     EACH           ------------ -----------------------------------------------
   REPORTING             9       SOLE DISPOSITIVE POWER
    PERSON
     WITH                        None
                    ------------ -----------------------------------------------
                        10       SHARED DISPOSITIVE POWER

                                 1,751,532
--------------------------------------------- ------------ ---------------------
      11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                1,751,532
--------------- ----------------------------------------------------------------
      12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
                SHARES*                                                     |_|
--------------- ----------------------------------------------------------------
      13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                2.2%
--------------- ----------------------------------------------------------------
      14        TYPE OF REPORTING PERSON*
                CO
--------------- ----------------------------------------------------------------


                                  Page 2 of 13



---------------------------                                 --------------------
  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
--------------- ----------------------------------------------------------------
                         7       SOLE VOTING POWER

                                 None
   NUMBER OF        ------------ -----------------------------------------------
     SHARES              8       SHARED VOTING POWER
  BENEFICIALLY
    OWNED BY                     699,373
     EACH           ------------ -----------------------------------------------
   REPORTING             9       SOLE DISPOSITIVE POWER
    PERSON
     WITH                        None
                    ------------ -----------------------------------------------
                        10       SHARED DISPOSITIVE POWER

                                 699,373
--------------------------------------------- ------------ ---------------------
      11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                699,373
--------------- ----------------------------------------------------------------
      12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
                SHARES*                                                     |_|
--------------- ----------------------------------------------------------------
      13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                0.9%
--------------- ----------------------------------------------------------------
      14        TYPE OF REPORTING PERSON*
                PN
--------------------------------------------- ----------------------------------


                                  Page 3 of 13



---------------------------                                 --------------------
  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
--------------- ----------------------------------------------------------------
                         7       SOLE VOTING POWER

                                 None
   NUMBER OF        ------------ -----------------------------------------------
     SHARES              8       SHARED VOTING POWER
  BENEFICIALLY
    OWNED BY                     73,866
     EACH           ------------ -----------------------------------------------
   REPORTING             9       SOLE DISPOSITIVE POWER
    PERSON
     WITH                        None
                    ------------ -----------------------------------------------
                        10       SHARED DISPOSITIVE POWER

                                 73,866
--------------------------------------------- ------------ ---------------------
      11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                73,866
--------------- ----------------------------------------------------------------
      12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
                SHARES*                                                     |_|
--------------- ----------------------------------------------------------------
      13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                0.0%
--------------- ----------------------------------------------------------------
      14        TYPE OF REPORTING PERSON*
                PN
--------------- ----------------------------------------------------------------


                                  Page 4 of 13



---------------------------                                 --------------------
  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
--------------- ----------------------------------------------------------------
                         7       SOLE VOTING POWER

                                 None
   NUMBER OF        ------------ -----------------------------------------------
     SHARES              8       SHARED VOTING POWER
  BENEFICIALLY
    OWNED BY                     978,293
     EACH           ------------ -----------------------------------------------
   REPORTING             9       SOLE DISPOSITIVE POWER
    PERSON
     WITH                        None
                    ------------ -----------------------------------------------
                        10       SHARED DISPOSITIVE POWER

                                 978,293
--------------------------------------------- ------------ ---------------------
      11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                978,293
--------------- ----------------------------------------------------------------
      12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
                SHARES*                                                     |_|
--------------- ----------------------------------------------------------------
      13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                1.2%
--------------- ----------------------------------------------------------------
      14        TYPE OF REPORTING PERSON*
                OO (see Item 2)
--------------- ----------------------------------------------------------------


                                  Page 5 of 13



---------------------------                                 --------------------
  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
--------------- ----------------------------------------------------------------
                         7       SOLE VOTING POWER

                                 2,739,218
   NUMBER OF        ------------ -----------------------------------------------
     SHARES              8       SHARED VOTING POWER
  BENEFICIALLY
    OWNED BY                     1,751,532
     EACH           ------------ -----------------------------------------------
   REPORTING             9       SOLE DISPOSITIVE POWER
    PERSON
     WITH                        2,739,218
                    ------------ -----------------------------------------------
                        10       SHARED DISPOSITIVE POWER

                                 1,751,532
--------------------------------------------- ------------ ---------------------
      11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                4,490,750
--------------- ----------------------------------------------------------------
      12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN
                SHARES*                                                     |_|
--------------- ----------------------------------------------------------------
      13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                5.6%
--------------- ----------------------------------------------------------------
      14        TYPE OF REPORTING PERSON*
                OO (see Item 2)
--------------- ----------------------------------------------------------------


      This Amendment No. 21 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").


                                  Page 6 of 13



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 Dr. Lindsay A. Rosenwald,
                  Paramount  BioCapital Asset Management,  Inc. ("PCAM"),  Aries
                  Domestic Fund, L.P. ("ADF1"),  The Aries Master Fund II, Ltd.,
                  a Cayman Island exempted company ("AMF2"),  and Aries Domestic
                  Fund  II,  L.P.   ("ADF2"  and,   collectively,   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 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
                  General Partner of ADF1 and ADF2,  each a limited  partnership
                  organized  under  the  laws of  Delaware  and  the  investment
                  manager to AMF2(2), 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 providing  information  called for by Items 2-6 of this statement
      as to said officers and directors.


                                  Page 7 of 13



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 6, 2004, pursuant to Rule 144 (a) AMF2 sold 66,300 Shares of the
Issuer  at a price  equal  to  $4.88  for  aggregate  gross  proceeds  equal  to
$3,249,525,  (b) ADF sold 500,700 shares of the Issuer at a price equal to $4.88
for aggregate gross proceeds equal to $2,441,914 and (c) ADF2 sold 53,000 Shares
of the Issuer at a price equal to $4.88 for aggregate  gross  proceeds  equal to
$258,481.

         On May 7, 2004,  pursuant to Rule 144 (a) AMF2 sold  300,400  Shares of
the  Issuer at a price  equal to $4.72 for  aggregate  gross  proceeds  equal to
$1,417,888,  (b) ADF sold 225,700 shares of the Issuer at a price equal to $4.72
for aggregate gross proceeds equal to $1,065,304 and (c) ADF2 sold 23,900 Shares
of the Issuer at a price equal to $4.72 for aggregate  gross  proceeds  equal to
$112,808.

         On May 10, 2004,  pursuant to Rule 144 (a) AMF2 sold 428,700  Shares of
the  Issuer at a price  equal to $4.40 for  aggregate  gross  proceeds  equal to
$1,886,280,  (b) ADF sold 322,200 shares of the Issuer at a price equal to $4.40
for aggregate gross proceeds equal to $1,417,680 and (c) ADF2 sold 34,100 Shares
of the Issuer at a price equal to $4.40 for aggregate  gross  proceeds  equal to
$160,952.

         In  addition,  on May 10,  2004 Dr.  Rosenwald  exercised  warrants  to
3,116,801  shares of Common Stock at exercise  prices ranging  between $0.87 and
$0.88 per share. The warrants contained a cashless exercise feature, whereby, in
lieu of a cash payment,  Dr. Rosenwald  received fewer shares of Common Stock in
connection  with his exercise.  Accordingly,  following  exercise of warrants to
purchase  3,116,801  shares of Common  Stock of the Issuer,  Dr.  Rosenwald  was
issued  2,525,497  shares of Common  Stock,  the  balance  being used to satisfy
payment of the exercise price.

ITEM 4.  PURPOSE OF THE TRANSACTION.

         On May 6, 2004,  May 7, 2004 and May 10, 2004,  the  Reporting  Persons
took advantage of the increased  trading volume in the Issuer's  Common Stock in
order to substantially reduce its ownership position in the Issuer.

         The Filing 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 Filing Persons may deem material to their
respective  investment  decisions,  the Filing  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 Filing
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 13



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 10,  2004,  the  Filing  Persons  may be  deemed  to
                  beneficially own the following:

                  (i)      AMF2: 978,293 Shares (1.2%);

                  (ii)     Aries Domestic: 699,373 Shares (0.8%);

                  (iii)    Aries Domestic II: 73,866 Shares (0.0%);

                  (iv)     PCAM:  1,751,532  Shares  (2.1%),  comprised  of  the
                           Shares  held  by  AMF2,   Aries  Domestic  and  Aries
                           Domestic II; and

                  (v)      Dr. Rosenwald:  4,490,750 Shares (5.6%), comprised of
                           2,550,497  Shares and 188,721  Shares  issuable  upon
                           exercise  of  Common  Stock  purchase  warrants  held
                           directly  by  Dr.   Rosenwald  and  1,751,532  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:

                  Please see 13D  Amendment  Number 20 on May 6, 2004 and 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 13



                                   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 11, 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 11, 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 11, 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 11, 2004
         New York, NY            By:
                                     --------------------------------
                                     Lindsay A. Rosenwald, M.D.
                                     Chairman


Dated:   May 11, 2004
         New York, NY
                                     --------------------------------
                                     Lindsay A. Rosenwald, M.D.


                                  Page 10 of 13



                                    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 11, 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 11, 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 11, 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 11, 2004
         New York, NY            By:
                                     --------------------------------
                                     Lindsay A. Rosenwald, M.D.
                                     Chairman


Dated:   May 11, 2004
         New York, NY
                                     --------------------------------
                                     Lindsay A. Rosenwald, M.D.


                                  Page 11 of 13



                                    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 12 of 13



                                    EXHIBIT C

         The name and  principal  occupation  or  employment  of each  executive
officer and director of Aries Master Fund II 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 13 of 13