ALFACELL CORP
S-3, 1997-06-16
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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              As filed with the Securities and Exchange Commission
                                on June 13, 1997

                            Registration No. 33-_____
       -----------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                              ALFACELL CORPORATION
                              --------------------
             (Exact name of registrant as specified in its charter)

     DELAWARE                                                       22-2369085
     --------                                                       ----------
(State or other juris-                                        (I.R.S. Employer
diction of incorporation                                    Identification No.)
   or organization)

               225 Belleville Avenue, Bloomfield, New Jersey 07003
                                 (973) 748-8082
               (Address, including zip code, and telephone number,
                 including area code, of registrant's principal
                              executive offices)

                                 GAIL E. FRASER
                           VICE PRESIDENT, FINANCE AND
                             CHIEF FINANCIAL OFFICER
                              ALFACELL CORPORATION
               225 Belleville Avenue, Bloomfield, New Jersey 07003
                                 (973) 748-8082

            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   Copies to:

                             KEVIN T. COLLINS, ESQ.
                                 ROSS & HARDIES
                  65 East 55th Street, New York, New York 10022
                                 (212) 421-5555



     Approximate date of commencement of proposed sale to the public: As soon as
practicable after this Registration Statement becomes effective.

         If the only securities  being registered on this Form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [ ]



<PAGE>



     If any  securities  being  registered  on this Form are to be  offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ]

         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(b) under the Securities Act, check the following box and list the securities
registration  statement number of the earlier effective  registration  statement
for the same offering [ ]

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]


<PAGE>



                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>


============================================================================================================================
                                                               Proposed                   Proposed
                                                                Maximum                   Maximum
         Title of Each Class                                   Offering                  Aggregate                    Amount of
         of Securities to be      Amount to be                 Price Per                  Offering                   Registration
             Registered            Registered                    Share                     Price                         Fee
- -----------------------------------------------------------------------------------------------------------------------------------
Common Stock
<C>                                        <C>                        <C>                     <C>                       <C>      
$.001 par value                           3,485,974                  $4.97(1)                $17,325,290               $5,250.08
per share
- -----------------------------------------------------------------------------------------------------------------------------------
Common Stock                               10,000(2)                 $4.97(1)                    $49,700                  $15.06
$.001 par value                                                       
per share
- -----------------------------------------------------------------------------------------------------------------------------------
Common Stock                              839,451(3)                  $4.97(1)                 $4,172,071               $1,264.26
$.001 par value
per share
- -----------------------------------------------------------------------------------------------------------------------------------
Common Stock                              453,482(4)                  $4.97(1)                 $2,253,805                 $682.97
$.001 par value
per share
- -----------------------------------------------------------------------------------------------------------------------------------
Totals                                  4,788,907                     $4.97                   $23,800,867               $7,212.38
===================================================================================================================================
</TABLE>

     (1)  Estimated  solely  for the  purpose  of  computing  the  amount of the
          registration  fee in accordance  with Rule 457(c) under the Securities
          Act of 1933, as amended (the "Securities  Act"),  based on the average
          of the bid and ask price  for the  Common  Stock,  $.001 par value per
          share (the "Common Stock") as reported by the National  Association of
          Securities  Dealers  Automated  Quotation System ("NASDAQ") on June 9,
          1997.

     (2)  To be  offered  and  sold  by  one of the  Selling  Stockholders  upon
          exercise of the Bank Warrant (as defined herein).

     (3)  To be offered  and sold by certain of the  Selling  Stockholders  upon
          exercise of outstanding Warrants (as defined herein).

     (4)  To be offered  and sold by certain of the  Selling  Stockholders  upon
          exercise of Options (as defined herein).


         The Registrant hereby amends this  Registration  Statement on such date
or dates as may be necessary to delay its  effective  date until the  Registrant
shall file a further amendment which specifically  states that this Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  Registration  Statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.



<PAGE>

                   SUBJECT TO COMPLETION - DATED June 13, 1997

         Information  contained herein is subject to completion or amendment.  A
registration  statement  relating  to these  securities  has been filed with the
Securities  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.


                                   PROSPECTUS

                                4,788,907 Shares

                              Alfacell Corporation

                     Common Stock, par value $.001 per share


         The  Registration  Statement,  of which this  Prospectus  forms a part,
registers  the offer and sale of up to  4,788,907  shares of Common  Stock,  par
value  $.001 per share  (the  "Common  Stock"),  of  Alfacell  Corporation  (the
"Company"  or  "Alfacell")  by certain  holders  of Common  Stock,  warrants  to
purchase  Common Stock and options to purchase Common Stock  (collectively,  the
"Selling  Stockholders").  Of  these  4,788,907  shares,  3,485,974  shares  are
outstanding and held by certain of the Selling Stockholders,  839,451 shares are
issuable upon the exercise of outstanding warrants to purchase Common Stock (the
"Warrants")  held by certain of the  Selling  Stockholders,  453,482  shares are
issuable upon the exercise of outstanding  options to purchase Common Stock (the
"Options") held by certain of the Selling  Stockholders  (the "Option  Holders")
and  10,000  shares  underly a warrant  to  purchase  Common  Stock  (the  "Bank
Warrant")  issued to the  Company's  bank.  The  Selling  Stockholders  acquired
substantially  all of the outstanding  shares of Common Stock offered hereby and
the Warrants directly from the Company in private placement  transactions  which
were completed on March 21, 1994 (the "March 1994 Private Placement"), September
13,  1994 (the  "September  1994  Private  Placement"),  October  21,  1994 (the
"October  1994 Private  Placement"),  September  29, 1995 (the  "September  1995
Private Placement"), several private placement transactions during the period of
October 1995 to April 1996 (the "1995/1996  Private  Placements"),  in a private
placement  transaction  completed  on June 11,  1996  (the  "June  1996  Private
Placement"),  in  connection  with a raw  material  purchasing  agreement  dated
October 5, 1995 (the  "Supply  Agreement")  and in a private  placement  made on
March 3, 1997 (the "March 1997 Private  Placement")  (the investors in the March
1994 Private Placement,  September 1994 Private Placement,  October 1994 Private
Placement,  September 1995 Private Placement,  the 1995/1996 Private Placements,
the June 1996 Private Placement, the Supply Agreement and the March 1997 Private
Placement  are  referred  to  herein  collectively  as  the  "Private  Placement
Investors").  See  "Selling  Stockholders."  The 154,834  remaining  outstanding
shares of Common Stock offered hereby were acquired  pursuant to the exercise of
previously  outstanding options (the "Exercised Options").  The Company will not
receive  any of the  proceeds  from the  sale of  Common  Stock  by the  Selling
Stockholders.  To the  extent any  Warrants,  Options  or the Bank  Warrant  are
exercised,  the Company will apply the proceeds thereof to its general corporate
purposes. See "Use of Proceeds." The March 1994 Private Placement, the September
1994 Private Placement,  the October 1994 Private Placement,  the September 1995
Private  Placement,  the  1995/1996  Private  Placements,  the June 1996 Private
Placement,  the Supply Agreement and March 1997 Private  Placement are sometimes
collectively referred to herein as the "Private Placements".  The Option Holders
acquired the Options  directly from the Company in private  transactions  during
the period from October 1992 through  January  1993.  The bank acquired the Bank
Warrant  from the  Company in  connection  with the  amendment  to the term loan
agreement  (the "Term  Loan")  between the Company  and the bank.  See  "Selling
Stockholders."

     Certain of the Selling  Stockholders are officers,  directors and employees
of the Company (collectively,  the "Related Selling  Stockholders").  Options to
purchase an aggregate of 379,678 shares of Common Stock, Warrants to purchase an
aggregate  of 20,000  shares of Common Stock and 200,300  shares of  outstanding
Common  Stock  are  held  by the  Related  Selling  Stockholders.  See  "Selling
Stockholders."

         The Company's Common Stock is traded in the over-the-counter  market on
the National Association of Securities Dealers,  Inc. Automated Quotation System
("NASDAQ").  On June 9, 1997 the high bid and low ask price of the Common  Stock
were $4 7/8 and $5 1/16, respectively, as reported by NASDAQ.


<PAGE>

         The Selling  Stockholders may sell the shares of Common Stock from time
to time in transactions in the open market, in negotiated transactions,  or by a
combination  of these  methods,  at fixed prices that may be changed,  at market
prices at the time of sale, at prices  related to market prices or at negotiated
prices.  The Selling  Stockholders may effect these  transactions by selling the
Common Stock to or through  broker-dealers,  who may receive compensation in the
form of  discounts  or  commissions  from the Selling  Stockholders  or from the
purchasers of the Common Stock for whom the  broker-dealers  may act as agent or
to whom they may sell as principal, or both. Certain of the Selling Stockholders
may also sell certain of their shares of Common Stock pursuant to Rule 144 under
the Securities Act. See "Plan of Distribution."

         The  Company  will  bear all of the  expenses  in  connection  with the
registration of the Common Stock offered hereby, which expenses are estimated to
be $243,000  (including expenses paid through the date hereof in connection with
prior registrations of the shares of Common Stock included herein).  The Selling
Stockholders  will pay any brokerage  compensation in connection with their sale
of the Common Stock.


AN INVESTMENT IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH DEGREE OF RISK.
SEE "RISK FACTORS" COMMENCING ON PAGE 6.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION,  NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.


                  The date of this Prospectus is June ___, 1997


<PAGE>
                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act")  and,  in
accordance therewith, files reports, proxy statements and other information with
the  Securities and Exchange  Commission  (the  "Commission").  Such reports and
proxy and information  statements and other information filed by the Company can
be inspected  and copied at the public  reference  facilities  maintained by the
Commission at 450 Fifth Street, N.W., Room 1024, Washington,  D.C. 20549, and at
its regional offices located at Seven World Trade Center,  Suite 1300, New York,
New York 10048, and Northwestern  Atrium Center, 500 West Madison Street,  Suite
1400, Chicago, Illinois 60661-2511;  and copies of such material can be obtained
from the Public  Reference  Section of the  Commission in  Washington,  D.C., at
prescribed  rates. The Commission  maintains a World Wide Web site that contains
reports,  proxy  and  information  statements  and other  information  regarding
registrants  that file  electronically  with the Commission.  The address of the
site is http://www.sec.gov.

         The Company has filed with the Commission a  Registration  Statement on
Form S-3 (the  "Registration  Statement") under the Securities Act, with respect
to the shares of Common Stock offered  hereby.  This Prospectus does not contain
all of the information set forth in the Registration  Statement and the exhibits
and schedules thereto.  For further  information with respect to the Company and
the shares of Common  Stock  offered  hereby,  reference  is hereby  made to the
Registration Statement, exhibits and schedules.

         The following  trademarks  appear in this Prospectus:  ONCONASE(R) is a
registered  trademark  of Alfacell  Corporation;  and  Gemzar(R) is a registered
trademark of Eli Lilly & Co.

         No dealer, salesman or any other person has been authorized to give any
information  or to make any  representation  not  contained or  incorporated  by
reference in this Prospectus in connection  with this offering.  Any information
or representation  not contained or incorporated by reference herein must not be
relied on as having been  authorized by the Company.  This  Prospectus  does not
constitute  an  offer  to  sell  or the  solicitation  of an  offer  to buy  the
securities  offered  hereby in any state to any person to whom it is unlawful to
make  such  offer  or  solicitation.  Except  where  otherwise  indicated,  this
Prospectus speaks as of its date and neither the delivery of this Prospectus nor
any sale made hereunder shall,  under any  circumstances,  create an implication
that  there has been no  change in the  affairs  of the  Company  since the date
hereof.

                                       -i-

<PAGE>

                                TABLE OF CONTENTS
                                                                Page


Available Information.....................................        i

Incorporation of Certain Documents by Reference...........        1

Prospectus Summary........................................        2

Risk Factors..............................................        6

Use of Proceeds...........................................       12

Selling Stockholders......................................       12

Plan of Distribution......................................       24

Legal Matters.............................................       25

Experts...................................................       25


                                      -ii-

<PAGE>

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The Company hereby  incorporates  by reference into this Prospectus (i)
its Annual Report on Form 10-KSB for the Fiscal Year Ended July 31, 1996,  which
contains certified financial statements for the Company's latest fiscal year for
which a Form  10-KSB  was  required  to have been  filed,  and  incorporates  by
reference  certain portions of the Company's  definitive Proxy Statement for the
Annual Meeting of  Stockholders  held November 21, 1996,  (ii) all other reports
filed by the Company  pursuant  to Section  13(a) or 15(d) of the  Exchange  Act
since July 31, 1996, including but not limited to, the Quarterly Reports on Form
10-QSB for the Quarters  Ended October 31, 1996,  January 31, 1997 and April 30,
1997 and (iii) the description of the Company's  Common Stock,  $.001 par value,
as  contained  in its  registration  statement  on  Form  8-A,  filed  with  the
Commission on April 26, 1983.

         All documents filed by the Company  pursuant to Sections 13(a),  13(c),
14 and 15(d) of the Exchange Act, subsequent to the date hereof and prior to the
filing  of a  post-effective  amendment  to  the  Registration  Statement  which
indicates that all shares of Common Stock offered hereby have been sold or which
deregisters all shares of Common Stock then remaining unsold, shall be deemed to
be  incorporated  by reference into this Prospectus and to be a part hereof from
the date of filing of such documents.

         Any statement contained herein or in a document  incorporated or deemed
to be  incorporated  by  reference  herein  shall be  deemed to be  modified  or
superseded for purposes of this  Prospectus to the extent that such statement is
modified or  superseded  by a statement  contained  herein or in a  subsequently
filed  document  which  also is or is deemed  to be  incorporated  by  reference
herein. Any such statement so modified or superseded shall not be deemed, except
as so modified or superseded, to constitute a part of this Prospectus.

         The Company will provide, without charge, to each person (including any
beneficial  owner) to whom this  Prospectus is  delivered,  upon written or oral
request of such person,  a copy of any and all of the information  that has been
incorporated  by reference in this  Prospectus  (not including  exhibits to such
information unless such exhibits are specifically incorporated by reference into
such  information).  Such  requests  should be  directed  to Gail  Fraser,  Vice
President,  Finance and Chief  Financial  Officer,  at the  Company's  principal
executive  offices at 225  Belleville  Avenue,  Bloomfield,  New  Jersey  07003,
telephone (973) 748-8082.

                                       -1-

<PAGE>
                               PROSPECTUS SUMMARY

     The following summary is qualified in its entirety by reference to the more
detailed  information and consolidated  financial statements appearing elsewhere
and incorporated by reference in this Prospectus.


                                   THE COMPANY

         Alfacell    Corporation    ("Alfacell"   or   the   "Company")   is   a
biopharmaceutical  company  organized  in  1981  to  engage  in  the  discovery,
investigation  and development of a new class of anti-cancer drugs isolated from
leopard  frog  eggs  and  early  embryos.  The  Company's  first  product  under
development is ONCONASE(R)  which targets solid tumors,  most of which are known
to be resistant to other  chemotherapeutic  drugs. To date, the most significant
clinical results with ONCONASE have been observed in pancreatic,  non-small cell
lung,  mesothelioma and metastatic  breast cancer.  In 1996, the American Cancer
Society  estimated  that 388,000  people in the United States would be diagnosed
with lung, breast and pancreatic cancer and approximately 231,000 would die.

         ONCONASE  has been tested on cancer  patients  that have solid  tumors,
including  patients with advanced  stages of  pancreatic,  non-small  cell lung,
mesothelioma  and  metastatic  breast  cancer.  Encouraging  results  have  been
observed in Phase I and II clinical  trials in patients  with these tumor types,
warranting further trials,  some of which are underway.  Side effects associated
with ONCONASE  have been modest,  are primarily  renal and are  reversible  upon
reduction  of dosage or  discontinuation  of  treatment.  Patients  treated with
ONCONASE have shown no evidence of myelosuppression  (bone marrow  suppression),
alopecia  (hair  loss) or other  severe  toxicities  frequently  observed  after
treatment with most other  chemotherapeutic  drugs.  In November 1995,  Alfacell
began a randomized multi-center Phase III clinical trial to test the combination
of ONCONASE  and  tamoxifen  versus  5-fluorouracil  ("5- FU") in patients  with
advanced  pancreatic cancer. A subsequent Phase III clinical trial was initiated
in August 1996, to compare ONCONASE plus tamoxifen against Gemzar(R), a Food and
Drug Administration ("FDA") approved drug for pancreatic cancer.

         ONCONASE has  demonstrated in vitro anti-viral  activity.  The National
Institutes  of Health  ("NIH") has performed an  independent  in vitro screen of
ONCONASE against the HIV virus type 1 ("HIV virus"). The results showed ONCONASE
to inhibit replication of the HIV virus 99.9% after a four day incubation period
at  concentrations  not toxic to uninfected H9 leukemic cells.  In addition,  in
vitro findings by NIH scientists revealed that ONCONASE significantly  inhibited
production of the HIV-1 virus in several persistently infected human cell lines,
preferentially degrading viral RNA while not affecting normal cellular ribosomal
RNA and messenger RNAs.  Although the Company plans to further research ONCONASE
and its anti-viral  activity,  there can be no assurance that ONCONASE will show
any level of anti-HIV activity in humans.

         Beyond the  development  of ONCONASE,  Alfacell  has also  discovered a
series of  biologically  active proteins from the same natural source from which
ONCONASE was discovered.  These proteins appear to be involved in the regulation
of early embryonic and malignant cell growth.  However,  significant  additional
research will be required in order to develop these proteins into  therapeutics.
There can be no assurance  that the  development  of these  proteins  into human
therapeutics will be accomplished.

         During  the  period  from July 1991  through  September  1996,  154,834
options to purchase Common Stock were exercised.  This Prospectus relates to the
offer  and sale of an  aggregate  of  154,834  shares  issued  pursuant  to such
Exercised  Options.  In March 1994  Options to purchase an  aggregate of 453,482
shares of Common Stock were issued to the Company's Chief Executive  Officer and
an unaffiliated  lender in the conversion of an aggregate of $875,221 of Company
debt. The Options expire on various dates from the date hereof through March 30,
2004.  The  exercise  price of the  Options is $3.20 per  share.  As of the date
hereof,  all of the Options remain  outstanding.  This Prospectus relates to the
offer and sale by the Option Holders of 453,482 shares of Common Stock.

                                       -2-

<PAGE>
         On  March  21,  1994 the  Company  completed  the  March  1994  Private
Placement  resulting in the issuance of 40 units  consisting  of an aggregate of
800,000 shares of restricted Common Stock and three-year Warrants to purchase an
aggregate of 800,000  shares of Common  Stock at an exercise  price of $5.00 per
share.  The units were sold for  $50,000  per unit.  The per share  price of the
Common  Stock was $2.50.  The Company  received  net  proceeds of  approximately
$1,865,791  (including the purchase of 4.1 units from the conversion of $182,000
of  outstanding  Company  debt  plus  $23,000  of  outstanding  payables  by  an
unaffiliated  creditor and after the payment of certain offering expenses) which
has been used primarily for general corporate purposes, including the funding of
research and development  activities,  which include collaborations with the NIH
and the National Cancer Institute ("NCI") and Phase II/III clinical trials. This
Prospectus  relates to the offer and sale of 758,000  shares of Common Stock and
141,200 shares of Common Stock  underlying  Warrants which were purchased in the
March 1994 Private Placement and are held by investors in the March 1994 Private
Placement as of the date hereof.

         On September 13, 1994, the Company completed the September 1994 Private
Placement  resulting  in the  issuance  of an  aggregate  of  288,506  shares of
restricted Common Stock and 288,506 three-year Warrants to purchase an aggregate
of 288,506 shares of Common Stock at an exercise  price of $5.50 per share.  The
shares of Common Stock and Warrants to purchase  Common Stock were sold in units
consisting of 20,000 shares of Common Stock and 20,000 Warrants. An aggregate of
14.4  units  were sold at $50,000  per unit.  The per share  price of the Common
Stock was $2.50.  The Company  received net proceeds of  approximately  $545,000
(after giving  effect to the purchase of 2.4 units by the  conversion of $44,000
of  outstanding  Company  debt plus $77,265 of  outstanding  payables by certain
unaffiliated  creditors  and the  payment of  certain  offering  expenses).  The
Company utilized these net proceeds  primarily for general  corporate  purposes,
including  the funding of research and  development  activities,  which  include
collaborations  with the NIH and the NCI and Phase II/III clinical trials.  This
Prospectus  relates to the offer and sale of 220,000  shares of Common Stock and
288,506 shares of Common Stock  underlying  Warrants which were purchased in the
September 1994 Private Placement and are held by investors in the September 1994
Private Placement as of the date hereof.

         On October 21,  1994,  the Company  completed  the October 1994 Private
Placement  resulting in the issuance of 40,000 shares of restricted Common Stock
at a per share price of $2.50 and three-year  Warrants to purchase 40,000 shares
of Common  Stock at an  exercise  price of $5.50  per share to a single  private
investor.  On September  29, 1995,  the Company  completed  the  September  1995
Private Placement  resulting in the issuance of an aggregate of 1,925,616 shares
of restricted Common Stock and three-year  warrants to purchase 55,945 shares of
Common Stock at an exercise price of $4.00 per share.  The Common Stock was sold
alone at per share prices ranging from $2.00 to $3.70,  and in combination  with
Warrants at per share prices ranging from $4.96 to $10.92,  which related to the
number of Warrants  contained in the unit. After taking into account expenses of
the offerings,  the Company received net proceeds of approximately  $4.2 million
from the  October  1994 and  September  1995  Private  Placements.  The  Company
utilized these net proceeds primarily for general corporate purposes,  including
the funding of research and development activities, which include collaborations
with the NIH and the NCI and  Phase  II/III  clinical  trials.  This  Prospectus
relates  to the offer and sale of  864,034  shares  of Common  Stock and  95,945
shares of Common Stock underlying Warrants which were purchased in the aggregate
in the October 1994 Private  Placement and the September 1995 Private  Placement
and are held by investors in the October 1994 Private Placement and investors in
the September 1995 Private Placement as of the date hereof.

         On October 5, 1995, the Company entered into the Supply  Agreement with
one of its raw  material  suppliers  for the  purchase of leopard  frog eggs and
embryos.  Pursuant to the Supply  Agreement  the Company  issued 3,030 shares of
Common  Stock to each of  Gerald  and  Doris L.  Graska  (the  "Graskas").  This
Prospectus  relates  to the offer  and sale by the  Graskas  of 6,060  shares of
Common Stock.

         On November  29, 1995,  the Company  amended and restated the Term Loan
effective as of October 1, 1995.  The  amendment to the Term Loan  provides for,
among other  things,  the  issuance to the bank of the Bank  Warrant to purchase
10,000  shares of Common Stock through  August 31, 1997 at a per share  exercise
price of

                                       -3-

<PAGE>
$4.19. This Prospectus  relates to the offer and sale of 10,000 shares of Common
Stock underlying the Bank Warrant.

         On  April  4,  1996,  the  Company   completed  the  1995/1996  Private
Placements for an aggregate of 207,316 shares of restricted  Common Stock at per
share  prices  ranging  from  $3.60 to  $4.24.  On June 11,  1996,  the  Company
completed the June 1996 Private  Placement for an aggregate of 1,515,330  shares
of restricted Common Stock and three-year Warrants to purchase 313,800 shares of
Common Stock at an exercise price of $7.50 per share.  The Common Stock was sold
alone at a per share price of $3.70 and in  combination  with  Warrants at a per
unit price of $12.52.  Each unit  consisted  of three shares of Common Stock and
one Warrant.  The Warrants were also sold alone at a per Warrant price of $1.42.
These  Warrants are  exercisable  for terms ending  between  August 30, 1999 and
September  10, 1999,  respectively.  After  taking into account  expenses of the
offerings,  the Company received  aggregate net proceeds of  approximately  $6.5
million  from  the  1995/1996  Private  Placements  and the  June  1996  Private
Placement.  The Company  intends to utilize  these net  proceeds  primarily  for
general corporate purposes, including the funding of research and development of
its product ONCONASE. This Prospectus relates to the offer and sale of 1,371,046
shares of Common Stock and 313,800  shares of Common Stock  underlying  Warrants
which were  purchased in the aggregate in the 1995/1996  Private  Placements and
the June 1996  Private  Placement  and are held by  investors  in the  1995/1996
Private Placements and the June 1996 Private Placement.

         On  March 3,  1997,  the  Company  completed  the  March  1997  Private
Placement  with  a  private  investor  of an  aggregate  of  112,000  shares  of
restricted  Common Stock at a per share price of $4.50 resulting in net proceeds
of $504,000.  The Company  intends to utilize  these net proceeds  primarily for
general corporate purposes, including the funding of research and development of
its  product  ONCONASE.  This  Prospectus  relates  to the offer and sale by the
investor in the March 1997 Private Placement of 112,000 shares of Common Stock.

         The Company's sale of Common Stock and Warrants to accredited investors
(as that  term is  defined  in Rule 501 under the  Securities  Act) and  several
non-accredited  investors  in each of the  March  1994  Private  Placement,  the
September  1994  Private  Placement,  the October 1994  Private  Placement,  the
September 1995 Private  Placement,  the 1995/1996 Private  Placements,  the June
1996  Private  Placement,  the  Supply  Agreement  and the  March  1997  Private
Placement was effected in reliance upon Section 4(2) of the  Securities  Act and
Rule 506 thereunder, except that 115,000 shares were sold pursuant to Regulation
S under the Securities Act. Pursuant to stock purchase  agreements  entered into
by the  Company  with each of the Private  Placement  Investors  (the  "Purchase
Agreements") and the Term Loan amendment entered into with the bank, the Company
agreed to indemnify each of the Private Placement Investors and the bank (all of
whom are Selling Stockholders) against any liabilities, under the Securities Act
or  otherwise,  arising  out of or  based  upon any  untrue  or  alleged  untrue
statement of a material fact in the Registration Statement or this Prospectus or
by any omission of a material fact required to be stated  therein  except to the
extent  that  such  liabilities  arise out of or are  based  upon any  untrue or
alleged untrue statement or omission in any information  furnished in writing to
the Company by the Private Placement  Investors or the bank expressly for use in
the Registration  Statement.  Insofar as indemnification for liabilities arising
under the  Securities  Act may be  permitted to  directors,  officers or persons
controlling  the  Company  pursuant  to its  certificate  of  incorporation  and
by-laws, the Company has been informed that in the opinion of the Securities and
Exchange  Commission such  indemnification is against public policy as expressed
in the Act and is therefore unenforceable.

         The  Private  Placement  Investors  and the  bank  (except  the  Supply
Agreement  investors)  have the right,  at the  Company's  expense,  to have the
shares of Common Stock offered  hereby  registered for the offer and sale to the
public under the Securities  Act. The Private  Placement  Investors in the March
1994 Private Placement have the right to have the offer and sale of their shares
of Common  Stock  registered  through  August 3,  1997,  the  Private  Placement
Investors in the  September  1994 Private  Placement  have the right to have the
offer and sale of their shares of Common Stock registered  through September 14,
1997 and the Private Placement  Investors in the October 1994 and September 1995
Private  Placements have the right to have the offer and sale of their shares of
Common  Stock  registered  through  December  11,  1998.  The Private  Placement
Investors in the June 1996 Private  Placement  have the right,  at the Company's
expense,  to have the shares of Common Stock offered  hereby  registered for the
offer and sale to the public under the Securities Act until  September 13, 1999.
The Company has determined to

                                       -4-

<PAGE>
include the shares of Common Stock issued and issuable to the Private  Placement
Investors in the 1995/1996 Private  Placements,  the shares acquired pursuant to
the  Exercised  Options  and  the  Graska's  shares  of  Common  Stock  in  this
Registration Statement, although it has no obligation to do so. In addition, the
Option  Holders have the right to have the shares of Common Stock  issuable upon
the  exercise of the Options  registered  on a  registration  statement at their
request.  The  Company  has  determined  to register  such  shares  herein.  The
investors  in the March  1997  Private  Placement  have the right to have  their
shares  registered no later than July 31, 1997 and to maintain the effectiveness
of such registration statement for three years after initial effectiveness.

         Alfacell,  a  Delaware  corporation,  was  incorporated  in  1981.  The
Company's  executive offices are located at 225 Belleville  Avenue,  Bloomfield,
New Jersey 07003, telephone (973) 748-8082.


                                  The Offering


Securities Offered.......  

          This Prospectus relates to an offering by the Selling  Stockholders of
     up to 4,788,907 shares of Common Stock of the Company.  Of these shares (i)
     an aggregate of 3,485,974  shares of Common Stock  (including  6,060 shares
     issued pursuant to the Supply Agreement) are currently outstanding and were
     issued to the Private  Placement  Investors  either directly in the Private
     Placements,  pursuant to the  exercise  of  Warrants  issued in the Private
     Placements,  or pursuant to the  Exercised  Options  (ii) an  aggregate  of
     839,451  shares may be issued  upon  exercise  of the  Warrants  which were
     issued to the Private Placement Investors in the Private Placements,  (iii)
     an aggregate of 453,482  shares may be issued upon  exercise of the Options
     which  were  issued  to  the  Option   Holders  in  certain  other  private
     transactions  and (iv) 10,000  shares may be issued to the  Company's  bank
     upon exercise of the Bank Warrant  issued in connection  with the Term Loan
     amendment. See "Selling Stockholders."

Securities Outstanding..  

          As of June 2, 1997, the Company had 14,837,843  shares of Common Stock
     outstanding.  Assuming that all of the  Warrants,  the Options and the Bank
     Warrant  are  exercised  and no other  shares  of Common  Stock are  issued
     subsequent  to June 2, 1997,  the Company would have  16,140,776  shares of
     Common Stock outstanding.

Use of Proceeds........  

          The Company will not receive any proceeds  from the sale of the shares
     of Common Stock offered by the Selling Stockholders. As of June 2, 1997 the
     Company has received $737,250 from the exercise of the Warrants and has not
     received  any  proceeds  from  the  exercise  of the  Options  and the Bank
     Warrant.  If all of the  Warrants,  the  Options  and the Bank  Warrant are
     exercised,  the Company will receive  estimated  additional net proceeds of
     $6,583,105.  The Company intends to utilize any proceeds  received from the
     exercise of the  Warrants,  the  Options  and the Bank  Warrant for general
     corporate  purposes,  including  the  funding of research  and  development
     activities. There can be no assurance that any of the Warrants, the Options
     or the Bank Warrant will be exercised. See "Use of Proceeds."

Risk Factors............. 

          See "Risk  Factors"  for a  discussion  of certain  risk  factors that
     should  be  considered  by  prospective  investors  in  connection  with an
     investment in the shares of Common Stock offered hereby.


                                       -5-

<PAGE>
                                  RISK FACTORS

         The shares of Common Stock offered hereby are speculative and involve a
high degree of risk.  They should not be purchased  by anyone who cannot  afford
the  loss  of  his  or  her  entire  investment.  In  analyzing  this  offering,
prospective investors should consider the matters set forth below, among others,
and carefully read this  Prospectus.  Information  contained in this  Prospectus
contains  "forward-looking  statements"  which can be  identified  by the use of
forward-looking  terminology  such  as  "believes,"  "expects,"  "may,"  "will,"
"should" or "anticipates" or the negative thereof or other variations thereon or
comparable  terminology,  or by  discussion  of  strategy or future  plans.  See
"Prospectus  Summary - The  Company." No assurance  can be given that the future
results  covered  by  the  forward-looking  statements  will  be  achieved.  The
following  matters include  cautionary  statements,  including certain risks and
uncertainties,  that could  cause  actual  results to vary  materially  from the
future results covered in such forward-looking  statements.  Other factors could
also cause actual results to vary  materially from the future results covered in
such forward-looking statements.

         Development   Stage   Company,   Accumulated   Deficit,   Stockholders'
Deficiency and Uncertainty of Future Profitability. The Company is a development
stage company which is subject to all of the risks and  uncertainties  of such a
company,   including  uncertainties  of  product  development,   constraints  on
financial and personnel  resources and dependence  upon and need for third party
financing. The Company's profitability will depend primarily upon its success in
developing,  obtaining  regulatory  approvals  for,  and  effectively  marketing
ONCONASE.  ONCONASE  has not been  approved  by the United  States Food and Drug
Administration ("FDA").  Potential investors should be aware of the difficulties
a development  stage  enterprise  encounters,  especially in view of the intense
competition in the pharmaceutical industry in which the Company competes.  There
can be no assurance  that the Company's  plans will either  materialize or prove
successful,  that its products under development will be successfully  developed
or that such products will generate revenues sufficient to enable the Company to
earn a profit.  Since the Company's  incorporation in 1981, a significant source
of  cash  for  the  Company  has  been  public  and  private  placements  of its
securities. At July 31, 1996, and April 30, 1997, respectively,  the Company had
an  accumulated   deficit  of   approximately   $40,400,000,   and  $43,400,000,
respectively,  and a total stockholders' equity of approximately $6,700,000, and
$7,200,000, respectively. The Company anticipates that it will continue to incur
substantial losses in the future. The Company is pursuing  licensing,  marketing
and development  arrangements that may result in contract revenue to the Company
prior to its receiving revenues from commercial sales of ONCONASE.  To date, the
Company has not received any such revenues. There can be no assurance,  however,
that the Company will be able to successfully consummate any such arrangements.

         No Assurance Of Successful  Product  Development Or  Commercialization;
Uncertainties Related To Clinical Trials. The Company's research and development
programs are at various  stages of  development,  ranging  from the  preclinical
stage  to  Phase  III  clinical  trials.  Substantial  additional  research  and
development  will be  necessary  in order for the  Company to develop and obtain
regulatory  approval for its product  candidates,  and there can be no assurance
that the Company's research and development will lead to development of products
that  are  shown  to be safe  and  effective  in  clinical  trials  and that are
commercially  viable.  In  addition to further  research  and  development,  the
Company's product candidates will require clinical testing,  regulatory approval
and  development  of  marketing  and  distribution  channels,  all of which  are
expected   to   require    substantial    additional    investment    prior   to
commercialization. There can be no assurance that the Company's products will be
successfully  developed,  prove to be safe and  efficacious in clinical  trials,
meet applicable regulatory  standards,  receive marketing approval from the FDA,
be capable of being produced in commercial  quantities at acceptable  costs,  be
eligible for third party reimbursement from governmental or private insurers, be
successfully  marketed or achieve  market  acceptance.  Further,  the  Company's
products  may prove to have  undesirable  or  unintended  side  effects that may
prevent or limit their commercial use.

         The Company may find,  at any stage of its  research  and  development,
that products  which appeared  promising in  preclinical  studies or Phase I and
Phase II clinical trials do not demonstrate efficacy in larger-scale

                                       -6-

<PAGE>
Phase III clinical trials and do not receive regulatory  approvals.  The results
from  preclinical  testing and early  clinical  trials may not be  predictive of
results obtained in later clinical trials and large-scale testing.  Companies in
the  pharmaceutical  and  biotechnology  industries  have  suffered  significant
setbacks in various stages of clinical trials,  even in advanced clinical trials
after promising  results had been obtained in earlier trials.  Accordingly,  any
product  development  program  undertaken  by  the  Company  may  be  curtailed,
redirected or  eliminated  at any time.  The rate of completion of the Company's
clinical  trials  may  be  delayed  by  many  factors,   including  slower  than
anticipated patient enrollment,  or adverse events occurring during the clinical
trials.  Completion of testing,  studies and trials may take several years,  and
the length of time varies substantially with the type,  complexity,  novelty and
intended use of the product.  In addition,  data obtained from  preclinical  and
clinical  activities  are  susceptible to varying  interpretations,  which could
delay,  limit or  prevent  regulatory  approval.  Delays  or  rejections  may be
encountered  based upon many factors,  including  changes in  regulatory  policy
during the period of product development.  No assurance can be given that any of
the Company's development programs will be successfully  completed,  or that the
Company's products will receive FDA approval.

         Restrictions   Under   Secured   Financing.   As  of  April  30,   1997
approximately  $1,400,000 is owed to the bank pursuant to the Term Loan,  and is
secured by a lien on substantially  all of the Company's  assets,  including its
patents. The Term Loan agreement contains restrictive covenants which could make
it more  difficult to operate the Company's  business.  In the event the Company
defaults on the debt it owes to such bank,  the bank may foreclose on the assets
which  secure its debt and  utilize  such  assets to satisfy  such debt.  Upon a
liquidation  of the Company,  the Company's  assets would first be used to repay
its secured creditors and then its unsecured creditors,  before any distribution
would be made to holders of the Company's equity  securities.  Given the current
levels of the Company's assets and its  liabilities,  it is highly unlikely that
the  holders  of the  Company's  Common  Stock  would  receive  any  significant
distribution  in the event the Company is liquidated.  In the event that Company
is liquidated  there can be no assurance that any payment may be made to holders
of the Common Stock.  The  Company's  bank debt matures in August 1997, at which
time a principal payment of approximately  $1,400,000 will be due. At that time,
the  Company  intends  either  refinance  the Term Loan,  use its  current  cash
resources or raise  sufficient  equity to pay off the unpaid  balance.  However,
there can be no assurance that the Company will have  sufficient  cash resources
available at that time, that it will be able to raise sufficient  equity or that
it will be able to successfully conclude such a financing.

         Need for, and  Uncertainty  of, Future  Financing.  The Company will be
required to expend significant funds on the further  development of ONCONASE and
its continued  operations will depend on its ability to raise  additional  funds
through equity or debt financings, collaborative agreements, strategic alliances
and revenues from the commercial sale of ONCONASE.  To date, the Company has had
several preliminary discussions regarding potential collaborative agreements and
strategic   alliances,   however  there  can  be  no  assurance  that  any  such
arrangements  will be consummated.  Indeed,  there can be no assurance that such
funds will be  available  to the Company on  acceptable  terms,  if at all.  The
Company believes that its cash on hand, including marketable  securities,  as of
April  30,  1997  will be  sufficient  to meet its  anticipated  cash  needs for
approximately  the next two years  assuming that a  significant  portion of such
cash  reserves is not used to repay the Term Loan.  The Company will be required
to raise  additional funds to meet its cash needs upon exhaustion of its current
cash resources.  The Company continues to be primarily financed by proceeds from
private placements of Common Stock and investments in its equity securities.  If
the Company is unable to secure  sufficient  future  financing or refinance  its
bank debt it may be  necessary  for the  Company to curtail or  discontinue  its
research and development activities.

         Government Regulation; No Assurance of FDA Approval. The pharmaceutical
industry in the United  States is subject to stringent  governmental  regulation
and the sale of ONCONASE for use in humans in the United States will require the
prior approval of the FDA. Similar approvals by comparable agencies are required
in most foreign  countries.  The FDA has  established  mandatory  procedures and
safety standards which apply to the clinical testing,  manufacture and marketing
of pharmaceutical  products.  Pharmaceutical  manufacturing  facilities are also
regulated by state,  local and other  authorities.  Obtaining FDA approval for a
new   therapeutic   drug  may  take  several   years  and  involve   substantial
expenditures. ONCONASE has not been approved for sale in the United States or

                                       -7-

<PAGE>

elsewhere. There can be no assurance that the Company will be able to obtain FDA
approval for ONCONASE or any of its future products. Failure to obtain requisite
governmental  approvals or failure to obtain  approvals  of the scope  requested
will delay or preclude  the Company  from  marketing  its  products  while under
patent protection,  or limit the commercial use of the products, and thereby may
have  a  material  adverse  effect  on the  Company's  liquidity  and  financial
condition.  Further,  even if governmental  approval is obtained,  new drugs are
subject to continual review and a later discovery of previously unknown problems
may result in restrictions on the particular  product,  including  withdrawal of
such product from the market.

         Uncertain  Ability to Protect Patents and Proprietary  Technology.  The
Company  believes  it is  important  to develop new  technology  and improve its
existing technology. When appropriate,  the Company files patent applications to
protect such inventions. The Company owns five U.S. Patents: (i) U.S. Patent No.
4,888,172  issued in 1989,  which covers a  pharmaceutical  for treating  tumors
derived from fertilized eggs of a frog species;  (ii) U.S. Patent No.  5,559,212
issued in 1996  which  covers  the  amino  acid  composition  and  structure  of
ONCONASE; and (iii) U.S. Patents Nos. 5,529,775 and 5,540,925 issued in 1996 and
U.S. Patent  No.5,595,734  issued in 1997, which cover  combinations of ONCONASE
with certain  other  chemotherapeutics.  The Company  also owns U.S.  Patent No.
4,882,421, which has now been disclaimed and is therefore legally unenforceable.
This  disclaimer  permitted the Company to obtain U.S.  Patents Nos.  5,529,775,
5,540,925 and 5,559,212.  The Company owns two European patents.  These European
patents cover ONCONASE, process technology for making ONCONASE, and combinations
of ONCONASE  with certain other  chemotherapeutics.  The Company also owns other
patent applications,  which are pending in the United States, Europe, and Japan.
Additionally,  the Company owns an undivided  interest in an application that is
pending in the United States.  This application  relates to a Subject  Invention
(as that term is defined in cooperative  research and development  agreements to
which the Company and the National  Institutes of Health are  parties).  Patents
covering biotechnological inventions have an uncertain scope, and the Company is
subject to this uncertainty.  The Company's patent applications may not issue as
patents.  Moreover,  the  Company's  patents may not  provide  the Company  with
competitive  advantages  and may not withstand  challenges by others.  Likewise,
patents  owned by others may  adversely  affect the ability of the Company to do
business.  Furthermore,  others may independently develop similar products,  may
duplicate the  Company's  products,  and may design around  patents owned by the
Company.  The Company's patent  protection is limited to that afforded under the
claims of its  issued  patents,  unless and until  other  patent  protection  is
available to the Company.  Although  the Company  believes  that its patents and
patent  applications  are of substantial  value to the Company,  there can be no
assurance  that such patents will be of  substantial  commercial  benefit to the
Company,  will afford the Company adequate protection from competing products or
will not be challenged or declared invalid.  The Company expects that there will
continue to be  significant  litigation  in the industry  regarding  patents and
other  proprietary  rights and, if the Company  were to become  involved in such
litigation,  there  could  be no  assurance  that  the  Company  would  have the
resources  necessary to litigate the contested issues  effectively.  Pursuant to
the Term Loan  agreement  with the Company,  the  Company's  bank has a security
interest in the Company's patent  portfolio.  The bank has agreed,  however,  to
subordinate  its interest to licensees of the Company if certain  conditions are
met. The loss of the rights to the Company's  patents through the enforcement of
the  bank's  security  interest  could  have a  material  adverse  effect on the
Company.

         Intense Competition and Technological  Obsolescence.  There are several
companies,  universities,  research  teams  and  scientists,  both  private  and
government-sponsored,   which  engage  in  developing   products  for  the  same
indications  as the Company.  Many of these entities and  associations  have far
greater financial resources,  larger research staffs and more extensive physical
facilities than the Company.  Several  competitors are more experienced and have
substantially  greater  clinical,  marketing  and  regulatory  capabilities  and
managerial  resources than the Company.  Such  competitors  may succeed in their
research and  development  of products for the same  indications  as the Company
prior to the Company achieving any measure of success in its efforts.

         The  number of persons  skilled  in the  research  and  development  of
pharmaceutical  products is limited and significant  competition exists for such
individuals. As a result of this competition and the Company's limited

                                       -8-

<PAGE>

resources,  the Company may find it difficult to attract skilled  individuals to
research, develop and investigate anti- cancer drugs in the future.

         The business in which the Company is engaged is highly  competitive and
involves rapid changes in the  technologies  of discovering,  investigating  and
developing new drugs.  Rapid  technological  development by others may result in
the  Company's   products  becoming  obsolete  before  the  Company  recovers  a
significant portion of the research,  development and commercialization expenses
incurred with respect to those products. Competitors of the Company are numerous
and are expected to increase as new technologies become available. The Company's
success depends upon  developing and  maintaining a competitive  position in the
development of new drugs and technologies in its area of focus.  There can be no
assurance that, if attained,  the Company will be able to maintain a competitive
position in the pharmaceutical industry.

         Uncertain  Availability  Of  Health  Care  Reimbursement;  Health  Care
Reform.  The Company's  ability to  commercialize  its product  candidates  will
depend  in part on the  extent  to  which  reimbursement  for the  costs of such
product will be available from  government  health  administration  authorities,
private health  insurers and others.  Significant  uncertainty  exists as to the
reimbursement  status of newly approved  health care  products.  There can be no
assurance of the availability of adequate  third-party  insurance  reimbursement
coverage  that  enables the  Company to  establish  and  maintain  price  levels
sufficient  for  realization  of an  appropriate  return  on its  investment  in
developing   its  products.   Government  and  other   third-party   payors  are
increasingly  attempting to contain  health care costs by limiting both coverage
and the  level  of  reimbursement  for new  therapeutic  products  approved  for
marketing by the FDA and by refusing, in some cases, to provide any coverage for
uses of  approved  products  for disease  indications  for which the FDA has not
granted marketing  approval.  If adequate coverage and reimbursement  levels are
not provided by  government  and  third-party  payors for uses of the  Company's
product  candidates,  the market acceptance of these products would be adversely
affected.

         Health care reform  proposals  have been  introduced in Congress and in
various state  legislatures.  It is currently  uncertain whether any health care
reform  legislation  will be  enacted  at the  federal  level,  or what  actions
governmental  and private payors may take in response to the suggested  reforms.
The Company cannot  predict when any proposed  reforms will be  implemented,  if
ever, or the effect of any implemented reforms on the Company's business.  There
can be no  assurance  that any  implemented  reforms  will  not have a  material
adverse  effect on the  Company.  Such  reforms,  if  enacted,  may  affect  the
availability of third-party  reimbursement for products developed by the Company
as well as the price levels at which the Company is able to sell such  products.
In  addition,  if the  Company is able to  commercialize  products  in  overseas
markets, the Company's ability to achieve success in such markets may depend, in
part, on the health care financing and reimbursement policies of such countries.

         Potential Product  Liability.  The use of the Company's products during
testing or after regulatory approval entails an inherent risk of adverse effects
which  could  expose the  Company  to  product  liability  claims.  The  Company
maintains product liability insurance coverage in the total amount of $6,000,000
for claims arising from the use of its products in clinical  trials prior to FDA
approval.  There can be no  assurance  that the Company will be able to maintain
its existing  insurance  coverage or obtain coverage for the use of its products
in the future. Management believes that the Company maintains adequate insurance
coverage for the operation of its business at this time,  however,  there can be
no assurance that such insurance coverage and the resources of the Company would
be sufficient to satisfy any liability resulting from product liability claims.

         Dependence  Upon Key Personnel.  The Company is currently  managed by a
small number of key  management  and  operating  personnel,  whose  efforts will
largely determine the Company's success.  The loss of key management  personnel,
particularly Kuslima Shogen, the Company's Chairman and Chief Executive Officer,
would likely have a material  adverse  effect on the Company.  The bank may call
due all amounts  payable under the Term Loan  agreement  with the Company in the
event  Ms.  Shogen  ceases  for any  reason,  except  death,  to be a full  time
employee,  officer or director of the  Company.  The Company  carries key person
life insurance on the life of Ms.

                                       -9-

<PAGE>
Shogen with a face value of  $1,000,000.  The  Company's  bank has been assigned
this policy as security for the approximately  $1,400,000  outstanding under the
Term Loan.

         Liquidity.  The Company's  Common Stock has been quoted on the National
Association of Securities  Dealers Inc.  Automated  Quotation System  ("NASDAQ")
Small Cap Market  since  December  5, 1996 and is  currently  thinly  traded.  A
limited trading market could result in an investor being unable to liquidate his
or her investment.

         No  Dividends.  The  Company has not paid any  dividends  on its Common
Stock since its  inception  and does not  currently  foresee the payment of cash
dividends  in the  future.  Furthermore,  under  the Term  Loan the  Company  is
prohibited  from paying any dividends  without the bank's  consent.  The Company
currently intends to retain all earnings, if any, to finance its operations.

         Preferred  Stock;   Anti-takeover  Device.  The  Company  is  currently
authorized to issue  1,000,000  shares of preferred  stock,  par value $.001 per
share.  The Company's Board of Directors is authorized,  without any approval of
the  stockholders,  to issue the preferred stock and determine the terms of such
preferred  stock.  There are no  shares  of  preferred  stock  outstanding.  The
authorized  and  unissued  shares of  preferred  stock may be  classified  as an
"anti-takeover"  measure and may discourage  attempted  takeovers of the Company
which are not  approved  by the Board of  Directors.  The  authorized  shares of
preferred stock will remain  available for general  corporate  purposes,  may be
privately placed and can be used to make a change in control of the Company more
difficult.  Under  certain  circumstances,  the Board of Directors  could create
impediments  to, or frustrate,  persons seeking to effect a takeover or transfer
in control of the  Company  by causing  such  shares to be issued to a holder or
holders who might side with the Board of  Directors  in opposing a takeover  bid
that the  Board of  Directors  determines  is not in the best  interests  of the
Company and its stockholders, but in which unaffiliated stockholders may wish to
participate.  Under  Delaware  law, the Board of Directors is permitted to use a
depositary  receipt  mechanism  which  enables  the Board to issue an  unlimited
number of fractional  interests in each of the authorized and unissued shares of
preferred  stock  without  stockholder  approval.  Consequently,  the  Board  of
Directors,  without further stockholder approval,  could issue authorized shares
of  preferred  stock or  fractional  interests  therein  with  rights that could
adversely  affect the rights of the holders of the  Company's  Common Stock to a
holder or holders  which,  when voted  together  with other  securities  held by
members of the Board of Directors and the executive officers and their families,
could  prevent  the  majority   stockholder   vote  required  by  the  Company's
certificate  of  incorporation  or  Delaware  law  to  effect  certain  matters.
Furthermore,  the existence of such  authorized  shares of preferred stock might
have the effect of discouraging any attempt by a person, through the acquisition
of a  substantial  number of shares of Common Stock,  to acquire  control of the
Company.  Accordingly,  the  accomplishment  of  a  tender  offer  may  be  more
difficult.  This may be beneficial to management in a hostile tender offer,  but
have an  adverse  impact on  stockholders  who may want to  participate  in such
tender offer.

     Control By Present Management.  The Company's officers and directors,  as a
group,  beneficially  owned 25.1% of the outstanding Common Stock of the Company
as of June 2, 1997 and thus could in some instances  exercise  effective control
over  the  Company.   The  Company's   Chief   Executive   Officer  has  pledged
substantially all the shares of the Company's Common Stock beneficially owned by
her to secure repayment of the Term Loan. See "Risk Factors  Restrictions  under
Secured Financing."

         Volatility and Possible  Reduction in Price of Common Stock. The market
price of the Common Stock, like that of the securities of many other development
stage biotechnology companies, has been and may continue to be, highly volatile.
Factors such as  announcements  of  technological  innovations or new commercial
products by the Company or its  competitors,  disclosure  of results of clinical
testing  or  regulatory  proceedings,  governmental  regulation  and  approvals,
developments  in patent or other  proprietary  rights,  public concern as to the
safety of products  developed by the Company and general  market  conditions may
have a significant  effect on the market price of the Common Stock. In addition,
the stock market has experienced and continues to experience extreme price

                                      -10-

<PAGE>
and  volume   fluctuations   which  have  effected  the  market  price  of  many
biotechnology  companies.  These broad market  fluctuations,  as well as general
economic and political conditions,  may adversely effect the market price of the
Company's Common Stock.

         Dependence  on Third  Parties for  Manufacturing.  The Company does not
currently have  facilities  capable of  manufacturing  its product in commercial
quantities and, for the foreseeable future, the Company intends to rely on third
parties  to  manufacture  its  product.  If the  Company  were  to  establish  a
manufacturing  facility,  which it currently  does not intend to do, the Company
would  require  substantial  additional  funds and would be required to hire and
retain  significant  additional  personnel to comply with the extensive  current
Good Manufacturing  Practices ("cGMP") regulations of the FDA applicable to such
a facility. No assurance can be given that the Company would be able to make the
transition successfully to commercial production, if it chose to do so.

         Dependence on Third  Parties for  Marketing;  No Marketing  Experience.
Neither the Company nor any of its  officers  or  employees  has  pharmaceutical
marketing  experience.  The  Company  intends  to  enter  into  development  and
marketing  agreements  with third parties.  The Company  expects that under such
arrangements  it would act as a  co-marketing  partner or would grant  exclusive
marketing  rights  to its  corporate  partners  in  return  for  up-front  fees,
milestone payments and royalties on sales. Under these agreements, the Company's
marketing  partner  may have the  responsibility  for a  significant  portion of
development  of the  product  and  regulatory  approval.  In the event  that the
marketing  partner  fails to develop a  marketable  product or fails to market a
product  successfully,  the Company's business may be adversely affected. If the
Company were to market its products itself,  significant additional expenditures
and  management  resources  would be required to develop an internal sales force
and  there  can  be no  assurance  that  the  Company  would  be  successful  in
penetrating  the markets for any products  developed or that internal  marketing
capabilities would be developed at all.

         Shares  Eligible for Future Sale.  As of June 2, 1997,  the Company had
outstanding  14,837,843  shares of Common  Stock and  options  and  warrants  to
acquire an additional  5,213,676  shares of Common Stock.  Of these  outstanding
shares,  9,500,663 shares are freely transferable without restriction or further
registration  under the  Securities  Act.  The  remaining  5,337,180  shares are
"restricted  securities"  as that term is defined in Rule 144 adopted  under the
Securities  Act.  Of  these  restricted  shares,  approximately  5,090,346  were
eligible to be sold under Rule 144 as of June 2, 1997 and  3,485,974  (including
3,239,140  eligible to be sold under Rule 144) are  covered by the  Registration
Statement  of which  this  Prospectus  forms a part.  Such  3,485,974  shares of
restricted  Common Stock included in the  Registration  Statement filed with the
Commission,  will,  if  sold  pursuant  thereto,  be  freely  tradeable  without
restriction  under  the  Securities  Act,  except  that  any  shares  sold to an
"affiliate,"  as that term is defined under the Securities  Act, will be subject
to the resale  limitations  of Rule 144. As of June 2, 1997,  in addition to the
Warrants  to  purchase  839,451  shares of Common  Stock  issued in the  Private
Placements,  the Options to purchase 453,482 shares of Common Stock and the Bank
Warrant to purchase  10,000 shares of Common Stock,  all of which are covered by
the  Registration  Statement of which this Prospectus  forms a part,  there were
outstanding  options  issued to  officers  and  directors  of the  Company  (the
"Employee  Options")  to purchase an  aggregate  of  3,910,743  shares of Common
Stock,  which are covered by an  effective  Registration  Statement on Form S-8.
Such  5,213,676  shares of  Common  Stock  underlying  such  Warrants,  Options,
Employee  Options and the Bank  Warrants  will,  if issued upon exercise of such
Warrants, Options, Employee Options and Bank Warrants and sold pursuant to their
respective  registration  statements,  be freely tradeable  without  restriction
under the  Securities  Act,  except  that any shares of Common  Stock held by an
"affiliate,"  as that term is defined under the Securities  Act, will be subject
to the resale limitations of Rule 144. The existence of such Warrants,  Options,
Employee Options and Bank Warrants may adversely affect the Company's ability to
consummate future equity financings.  The future sale of a substantial number of
shares of Common  Stock by  existing  holders  of Common  Stock and  holders  of
warrants and options exercisable for Common Stock pursuant to Rule 144 under the
Securities Act or through effective registration  statements may have an adverse
impact on the market price of the Common Stock.

     Utilization of Carryforwards. At July 31, 1996, the Company had federal net
operating loss  carryforwards  of  approximately  $27,660,000 that expire in the
years 1997 to 2011. The Company also had

                                      -11-

<PAGE>

investment tax credit  carryforwards of  approximately  $63,000 and research and
experimentation tax credit  carryforwards of approximately  $416,000 that expire
in the  years  1998 to  2011.  Ultimate  utilization/availability  of  such  net
operating  losses and credits may be  significantly  curtailed if a  significant
change in ownership occurs.

         Termination  of Company's  Auditors.  The  financial  statements of the
Company from  inception  to July 31, 1992  incorporated  by reference  into this
Registration  Statement,  were  audited by the  independent  accounting  firm of
Armus,  Harrison & Co. ("AHC"). On December 1, 1993, certain shareholders of AHC
terminated their  association with AHC (the "AHC  Termination"),  and AHC ceased
performing  accounting  and  auditing  services,  except for limited  accounting
services to be performed on behalf of the Company.  In June 1996,  AHC dissolved
and  ceased all  operations.  The  report of AHC with  respect to the  financial
statements  of the Company from  inception to July 31, 1992 is  incorporated  by
reference into this  Registration  Statement,  although AHC has not consented to
the incorporation of such report herein and will not be available to perform any
subsequent review procedures with respect to such report. Accordingly, investors
will be  barred  from  asserting  claims  against  AHC under  Section  11 of the
Securities  Act on the basis of the  incorporation  of such  report  herein.  In
addition,  in the event any persons seek to assert a claim against AHC for false
or misleading financial statements and disclosures in documents previously filed
by the  Company,  such claims will be adversely  affected  and possibly  barred.
Furthermore,  as a result of the lack of a consent from AHC to the incorporation
of its audit  report in this  Prospectus,  the  officers  and  directors  of the
Company  will be unable to rely on the  authority  of AHC as experts in auditing
and accounting in the event any claim is brought  against any such persons under
Section 11 of the Securities Act based on alleged false and misleading financial
statements and disclosures attributable to AHC. The discussion regarding certain
effects of the AHC  Termination  is not meant and should not be construed in any
way as legal advice to any party and any potential purchaser should consult with
his, her or its own counsel with respect to the effect of the AHC Termination on
a potential investment in the Common Stock of the Company or otherwise.


                                 USE OF PROCEEDS

         The Company will not receive any  proceeds  from the sale of the shares
of Common  Stock  offered  herein  by the  Selling  Stockholders.  If all of the
Warrants,  the Options  and the Bank  Warrant are  exercised,  the Company  will
receive estimated net proceeds of approximately  $6,583,105. To date the Company
has received $737,250 from the exercise of previously  outstanding Warrants. The
Company  intends to utilize  any  proceeds  received  from the  exercise  of the
Warrants,  the Options  and the Bank  Warrant  primarily  to fund  research  and
development  activities  and for  general  corporate  purposes.  There can be no
assurance  that any of the  Warrants,  the Options or the Bank  Warrant  will be
exercised.


                              SELLING STOCKHOLDERS

Stock Ownership

         The table  below sets  forth the  number of shares of Common  Stock (i)
owned  beneficially by each of the Selling  Stockholders;  (ii) being offered by
each  Selling  Stockholder  pursuant  to  this  Prospectus;  (iii)  to be  owned
beneficially  by each Selling  Stockholder  after  completion  of the  offering,
assuming that all of the Warrants,  the Options and the Bank Warrant held by the
Selling Stockholders are exercised and all of the shares offered hereby are sold
and that none of the other shares held by the Selling Stockholders,  if any, are
sold and (iv) the  percentage  to be  owned by each  Selling  Stockholder  after
completion of the offering,  assuming that all of the Warrants,  Options and the
Bank  Warrant  held by the Selling  Stockholders  are  exercised  and all of the
shares  offered  hereby are sold and that none of the other  shares  held by the
Selling Stockholders,  if any, are sold. For purposes of this table each Selling
Stockholder  is  deemed to own  beneficially  (i) the  shares  of  Common  Stock
underlying the Warrants,  the Options and the Bank Warrant,  (ii) the issued and
outstanding  shares of Common Stock owned by the Selling  Stockholder as of June
2, 1997 and (iii) the shares of Common  Stock  underlying  any other  options or
warrants

                                      -12-

<PAGE>

owned by the Selling  Stockholder  which are  exercisable  as of June 2, 1997 or
which will  become  exercisable  within 60 days  after  June 2, 1997.  Except as
otherwise  noted,  none of  such  persons  or  entities  has  had  any  material
relationship with the Company during the past three years.

         In  connection  with the  registration  of the  shares of Common  Stock
offered   hereby,   the  Company  will  supply   prospectuses   to  the  Selling
Stockholders.


                                      -13-

<PAGE>


                           SELLING SHAREHOLDERS TABLE
<TABLE>
<CAPTION>

                                                                                                    Number of
                                                                                  Number of          Shares          Number of 
                                                Number of       Number of      Shares Offered        Offered           Shares       
                                                 Shares           Shares        and Acquired       Underlying       Offered and     
                                               Offered and     Offered and       in October       Options, The      acquired in     
                                Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the         
                                 Shares        March 1994       September         September        and Issued        1995/1996      
Selling                       Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private       
Stockholders(1)                   Owned         Placement       Placement         Placement        of Options        Placements     
- ---------------                   -----         ---------       ---------         ---------        ----------        ----------     

<S>                               <C>                   <C>              <C>         <C>                     <C>              <C>   
Ansam Investment                  125,000               0                0           125,000                 0                0     
Establishment Vaduz

Arinia Establishment Vaduz        125,000               0                0           125,000                 0                0     

Banque Diamantaire                 43,478               0                0            43,478                 0                0     
Anversoise (Suisse) SA

Barlow, Albert T. (3)             164,718          24,000           20,000            63,636                 0                0     

Barlow, Marie (4)                 144,718               0                0                 0                 0           26,316     

Barlow, Steven C. & Dianne         10,500               0                0            10,500                 0                0     
F. Barlow JT TEN

Bloom, Walter Dr. (5)              24,000               0                0                 0                 0                0     

Blyseth, Martin C.                 46,050          20,000                0                 0                 0                0     

Borghese, Francesco                 1,500               0                0                 0                 0                0     

Boynton, Charles H. &              48,715          20,000                0                 0                 0                0     
Susan D. Boynton JT TEN
(6)

Buccieri, Peter M.                  8,000           8,000                0                 0                 0                0     

Budhrani, Devidas Naraindas        38,910               0                0            38,910                 0                0     

Camp, Herbert L.                   80,000               0                0                 0                 0                0     

Chaikin, Marc                       8,000               0                0                 0                 0                0     

Champagne, Corinne M.              18,540               0                0                 0             6,500                0     


                                      -14-

<PAGE>

                                                                                                         Number of                  
                                                                                       Number of          Shares          Number of 
                                                     Number of       Number of      Shares Offered        Offered           Shares  
                                                      Shares           Shares        and Acquired       Underlying       Offered and
                                                    Offered and     Offered and       in October       Options, The      acquired in
                                     Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                      Shares        March 1994       September         September        and Issued        1995/1996 
Selling                            Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private  
Stockholders(1)                       Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                       -----         ---------       ---------         ---------        ----------        ---------- 
Costanzi, John B.  (7)             60,200               0                0                 0            40,000                0     

Cooper, Arthur G.                  20,000          20,000                0                 0                 0                0     

C.S.W.  Investment                 18,000               0                0                 0                 0                0     
Corporation  (5)

DeSantis, Carmen                    7,000               0                0                 0             4,000                0     

DeSantis, Mary F.                   6,000               0                0                 0             6,000                0     

Digital Creations,                112,000               0                0                 0                 0                0     
Incorporated

Dung, Lili B.L.                    50,000               0           40,000                 0                 0            5,000     

EC Investment Limited              80,000          80,000                0                 0                 0                0     

Einhorn D.D.S. Ltd., Gerald        15,000               0                0            15,000                 0                0     

Factor, Mallory                    20,000               0                0                 0                 0                0     

Falk, Martin                       13,800               0                0                 0                 0                0     

Farnum, Scott                         400               0                0                 0                 0                0     

First Fidelity Bank, N.A.          10,000               0                0                 0            10,000                0     

Foundation Danonia                256,000               0                0                 0                 0                0     

Foundation Zemara                  64,000               0                0                 0                 0                0     

Fraser, Margaret                   20,000               0           20,000                 0                 0                0     

Frohling, John (8)                 25,600               0           17,600                 0                 0                0     

Fry Jr., Kenneth L.                13,040               0                0             5,040                 0                0     


                                      -15-

<PAGE>
                                                                                                         Number of                  
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and 
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                            Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private  
Stockholders(1)                      Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                     -----         ---------       ---------         ---------        ----------        ----------   
      

Gianacakes, Peter J.               20,000          20,000                0                 0                 0                0     

Goldberg, Robert IRA               35,025          20,000                0                 0                 0                0     
Rollover

Goldsmith, Joel                     2,000               0                0                 0                 0                0     

Gordon, Michael A.                 10,000          10,000                0                 0                 0                0     

Granite Securities(16)             15,000               0                0                 0                 0                0     

Graska, Doris L. (9)               24,030               0                0                 0                 0                0     

Graska, Gerald (9)                 24,030               0                0                 0                 0                0     

Grymes III, Arthur J.              20,000          20,000                0                 0                 0                0     

Halsey Jr., Charles W.             10,000          10,000                0                 0                 0                0     

Hare & Co.                        200,000               0                0                 0                 0                0     

Harjes, Donald L.                  20,000          20,000                0                 0                 0                0     

Harrington, Lynn P.                 1,500               0                0                 0                 0                0     

Henry, Heather J. (10)              5,400               0                0                 0                 0                0     

Henry, Kimberly A. (10)             5,400               0                0                 0                 0                0     

Henry, Robert R. (11)             237,550          40,000           40,000           100,000                 0                0     

Heritage Finance & Trust          230,000         120,000           80,000                 0                 0           30,000     
Co.

Heritage U.S.A. Value Fund         40,000          40,000                0                 0                 0                0     


                                      -16-

<PAGE>
                                                                                                         Number of                 
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                           Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private 
Stockholders(1)                      Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                      -----         ---------       ---------         ---------        ----------        ----------  
                                   
Kemper Clearing Corp.             200,000               0                0           200,000                 0                0     
Cust. FBO Henry C.
Herrington Jr. IRA

Hofferbert, J. Harv                15,000               0                0            15,000                 0                0     

Holsapple, Jane R.                 10,000          10,000                0                 0                 0                0     

Horowitz, Edward D.                30,000          30,000                0                 0                 0                0     

Jacob, David                       49,000               0           40,000                 0                 0            5,000     

Jacobson, Richard M.               11,120               0                0            11,120                 0                0     

JAM Trust                          67,100          40,000                0                 0                 0                0     

Jay, Mark H. (12)                  36,106           9,200           10,906                 0                 0                0     

Kallstrom, John B. &               10,000          10,000                0                 0                 0                0     
Mary C. Kallstrom JT TEN

Katz, Robert                       19,000               0                0                 0                 0                0     

Kaufman Jr., C.L.                  15,120               0                0            15,120                 0                0     

Kaufman, David L.                   6,000               0                0             6,000                 0                0     

Kimberly Computer                  10,000               0                0                 0                 0                0     
Group Inc.

Knakal, Jeffrey R.                  8,000               0                0                 0                 0                0     

Knutsen, A. Roy                    26,000          20,000                0                 0                 0                0     

Konrad, Adolf & Adair              20,000          20,000                0                 0                 0                0     
Konrad JT TEN


                                      -17-

<PAGE>
                                                                                                        Number of                 
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                            Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private 
Stockholders(1)                       Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                       -----         ---------       ---------         ---------        ----------        ---------- 
Kunzli, Werner O.                  46,400          20,000           20,000                 0                 0                0     

Lampl, Stephen C. & Anne           55,000               0           40,000            15,000                 0                0     
B. Shumadine TTEE

First Trust Corp. C/F Robert       17,000               0                0            15,000                 0                0     
Le Buhn Keogh

Long, Patricia H.                   1,000               0                0                 0                 0                0     

Lowe, Colleen A. (13)              20,040               0                0                 0             6,500                0     

Lowe, Michael (14)                215,000               0                0                 0            20,000                0     

Lowe, Terry D.                     10,000               0                0                 0            10,000                0     

Lynch Jr., James H.                20,000          20,000                0                 0                 0                0     

Madsen, MADS Peter                  8,000               0                0                 0                 0                0     

Manna, Timothy J.                  73,000          20,000           40,000                 0                 0           13,000     

Maraist, Michael P.                73,393               0                0                 0                 0                0     

Marden, Bernard A.                320,000               0                0                 0                 0                0     

McCarthy, Linda T. (15)            40,000               0           40,000                 0                 0                0     

McCash, David J.                   21,040               0                0                 0             6,500                0     

McCash, Donna M.                    7,500               0                0                 0             5,500                0     

McCash, James O.                  401,185          80,000                0                 0            22,834                0     

McCash, Michael J.                 21,540               0                0                 0             6,500                0     

McMahen, Gary D.                   17,000               0                0            17,000                 0                0     


                                      -18-

<PAGE>

                                                                                                         Number of                 
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                           Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private 
Stockholders(1)                      Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                     -----         ---------       ---------         ---------        ----------        ----------  
Merrion Investors LLC             100,000               0                0                 0                 0           50,000     

Mesches, Kenneth S. (16)           82,365               0           40,000                 0                 0                0     

Milgram, Annmarie                   1,000               0                0             1,000                 0                0     

Miller, Donald W.                  15,000               0                0                 0                 0                0     

Miller, Janet                      10,000               0                0                 0                 0                0     

Miller, Kara A.                    15,000               0                0                 0                 0                0     

Miller, Kristin L.                 15,000               0                0                 0                 0                0     

Mittelman, Abraham (17)            95,000               0                0                 0            10,000                0     

Monica, Armand Della                2,000           2,000                0                 0                 0                0     

Morton III, Thruston B. &          37,000          20,000                0                 0                 0           13,000     
Patricia R. Morton TEN
COM

Osso, Rizziero                     10,000               0                0                 0                 0                0     

Parallax Partners                  50,000               0                0                 0                 0                0     

Pictet & CIE                       40,000               0                0                 0                 0           40,000     

Pisani, B. Michael (18)           236,000               0           20,000            80,000                 0                0     

Pisani, Michael B.                    500               0                0                 0                 0                0     

Pisani, John P.                    10,000               0                0                 0                 0                0     

Rankin, Carlton                    35,500               0                0                 0                 0           25,000     


                                      -19-

<PAGE>

                                                                                                         Number of                 
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                          Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private 
Stockholders(1)                      Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                      -----         ---------       ---------         ---------        ----------        ----------  
Roberts, W. Daniel &               52,500               0                0                 0                 0                0     
Maureen M.Roberts JT
WROS

Rosenwald, Barbara K.              10,000               0                0            10,000                 0                0     

Saltus, Susan E.                   20,000          20,000                0                 0                 0                0     

Samet, Roger H.                   145,000          20,000           40,000                 0                 0                0     

Sands, Marvin                      24,000               0                0                 0                 0                0     

Schierloh, John (19)              133,804          20,000                0                 0            73,804                0     

Shaw, Michael R.                    1,000               0                0                 0                 0                0     

Shogen, Kuslima (20)            2,664,901               0                0                 0           379,678                0     

Siegel, Allen (21)                198,562               0                0                 0             4,000                0     

Siegel, Josana                     20,000          20,000                0                 0                 0                0     

Siracusa, Richard IRA               4,200               0                0             2,200                 0                0     

Skidmore, C. Eric C/F               1,250               0                0             1,250                 0                0     
Amelia C. Skidmore UGMA
TX

Skidmore, C. Eric C/F Julia           500               0                0               500                 0                0     
Skidmore UGMA TX

Skidmore, Dr. Eric                  4,550               0                0             2,050                 0                0     

Skidmore, John E.                   1,200               0                0             1,200                 0                0     


                                      -20-

<PAGE>

                                                                                                         Number of                 
                                                                                      Number of          Shares          Number of 
                                                    Number of       Number of      Shares Offered        Offered           Shares  
                                                     Shares           Shares        and Acquired       Underlying       Offered and
                                                   Offered and     Offered and       in October       Options, The      acquired in
                                    Number of      Acquired in     Acquired in        1994 and        Bank Warrant          the    
                                     Shares        March 1994       September         September        and Issued        1995/1996 
Selling                            Beneficially       Private       1994 Private     1995 Private      upon Exercise       Private 
Stockholders(1)                      Owned         Placement       Placement         Placement        of Options        Placements 
- ---------------                      -----         ---------       ---------         ---------        ----------        ----------  
Spengler, Thomas M. amd            10,075               0                0             9,075                 0                0     
Michele P. Spengler JT
WROS

Starita, Fred A.                    4,000           4,000                0                 0                 0                0     

Stroud, Edward A.                   2,000           2,000                0                 0                 0                0     

Sylvester, Carmine                 11,000               0                0             1,000                 0                0     

Thall, Richard S. & Alice          21,000               0                0                 0                 0                0     
Thall TEN COM

Thieme Fonds                       17,030               0                0                 0                 0                0     

Thompson, Mary M. (22)             24,640               0                0                 0             6,500                0     

Trethewey, Robert R.               34,762               0                0            13,400                 0                0     

Tierney, James G. & Shirley        31,400               0                0                 0                 0                0     
A. Tierney TTEES

Walker, David R.                    6,000               0                0             6,000                 0                0     

Walter, Peter                      20,000          20,000                0                 0                 0                0     

Windsor Partners L.P.              20,000               0                0                 0                 0                0     

Wingfield, Charles L.              11,500               0                0            11,500                 0                0     

Woodmere Court Investment          20,000          20,000                0                 0                 0                0     
================================================================================================================================

</TABLE>

<PAGE>

                           SELLING SHAREHOLDERS TABLE (Cont'd)     

<TABLE>
<CAPTION>
                                                                                             Percentage                        
                                                                            Number of        Outstanding  
                                      Number of          Number of        Shares to be      Shares to be
                                   Shares Offered     Shares Offered          Owned             owned  
                                   and acquired in    and Acquired in     Beneficially      Beneficially
                                    the June 1996       March 1997            After             After                             
Selling                                Private            Private         Completion of      Completion
Stockholders(1)                       Placement          Placement          Offering        of Offering(2)
- ---------------                       ---------          ---------          --------        -----------
                                                                                                       
<S>                                           <C>                 <C>               <C>          <C>      
Ansam Investment                              0                   0                 0             *    
Establishment Vaduz                                                                                    
                                                                                                       
Arinia Establishment Vaduz                    0                   0                 0             *    
                                                                                                       
Banque Diamantaire                            0                   0                 0             *    
Anversoise (Suisse) SA                                                                                 
                                                                                                       
Barlow, Albert T. (3)                         0                   0            57,082             *    
                                                                                                       
Barlow, Marie (4)                             0                   0           118,402            1.0%    
                                                                                                       
Barlow, Steven C. & Dianne                    0                   0                 0             *    
F. Barlow JT TEN                                                                                       
                                                                                                       
Bloom, Walter Dr. (5)                     6,000                   0            18,000             *    
                                                                                                       
Blyseth, Martin C.                            0                   0            26,050             *    
                                                                                                       
Borghese, Francesco                       1,500                   0                 0             *    
                                                                                                       
Boynton, Charles H. &                         0                   0            28,715             *    
Susan D. Boynton JT TEN                                                                                
(6)                                                                                                    
                                                                                                       
Buccieri, Peter M.                            0                   0                 0             *    
                                                                                                       
Budhrani, Devidas Naraindas                   0                   0                 0             *    
                                                                                                       
Camp, Herbert L.                         80,000                   0                 0             *    
                                                                                                       
Chaikin, Marc                             8,000                   0                 0             *    
                                                                                                       
Champagne, Corinne M.                         0                   0            12,040             *    
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                              Percentage                    
                                                                            Number of        Outstanding   
                                       Number of          Number of        Shares to be      Shares to be                
                                    Shares Offered     Shares Offered          Owned             owned                         
                                    and acquired in    and Acquired in     Beneficially      Beneficially                   
                                     the June 1996       March 1997            After             After                    
                                        Private            Private         Completion of      Completion                  
Selling                                Placement          Placement          Offering        of Offering(2)                  
Stockholders(1)                        ---------          ---------          --------        -----------
- --------------                                                                                        
Costanzi, John B.  (7)                        0                   0            20,200             *    
                                                                                                       
Cooper, Arthur G.                             0                   0                 0             *    
                                                                                                       
C.S.W.  Investment                       18,000                   0                 0             *    
Corporation  (5)                                                                                       
                                                                                                       
DeSantis, Carmen                              0                   0             3,000             *    
                                                                                                       
DeSantis, Mary F.                             0                   0                 0             *    
                                                                                                       
Digital Creations,                            0             112,000                 0             *    
Incorporated                                                                                           
                                                                                                       
Dung, Lili B.L.                               0                   0             5,000             *    
                                                                                                       
EC Investment Limited                         0                   0                 0             *    
                                                                                                       
Einhorn D.D.S. Ltd., Gerald                   0                   0                 0             *    
                                                                                                       
Factor, Mallory                          20,000                   0                 0             *    
                                                                                                       
Falk, Martin                             13,800                   0                 0             *    
                                                                                                       
Farnum, Scott                               400                   0                 0             *    
                                                                                                       
First Fidelity Bank, N.A.                     0                   0                 0             *    
                                                                                                       
Foundation Danonia                      256,000                   0                 0             *    
                                                                                                       
Foundation Zemara                        64,000                   0                 0             *    
                                                                                                       
Fraser, Margaret                              0                   0                 0             *    
                                                                                                       
Frohling, John (8)                            0                   0             8,000             *    
                                                                                                       
Fry Jr., Kenneth L.                           0                   0             8,000             *    
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                                       
                                                                                                Percentage                         
                                                                               Number of        Outstanding                 
                                         Number of          Number of        Shares to be      Shares to be                     
                                      Shares Offered     Shares Offered          Owned             owned                        
                                      and acquired in    and Acquired in     Beneficially      Beneficially                     
                                       the June 1996       March 1997            After             After                        
Selling                                   Private            Private         Completion of      Completion                      
Stockholders(1)                          Placement          Placement          Offering        of Offering(2)                      
- ---------------                          ---------          ---------          --------        -----------                      
                                                                                          
Gianacakes, Peter J.                          0                   0                 0             *    
                                                                                                       
Goldberg, Robert IRA                          0                   0            15,025             *    
Rollover                                                                                               
                                                                                                       
Goldsmith, Joel                           2,000                   0                 0             *    
                                                                                                       
Gordon, Michael A.                            0                   0                 0             *    
                                                                                                       
Granite Securities(16)                   15,000                   0                 0             *    
                                                                                                       
Graska, Doris L. (9)                      3,030                   0            21,000             *    
                                                                                                       
Graska, Gerald (9)                        3,030                   0            21,000             *    
                                                                                                       
Grymes III, Arthur J.                         0                   0                 0             *    
                                                                                                       
Halsey Jr., Charles W.                        0                   0                 0             *    
                                                                                                       
Hare & Co.                              200,000                   0                 0             *    
                                                                                                       
Harjes, Donald L.                             0                   0                 0             *    
                                                                                                       
Harrington, Lynn P.                       1,500                   0                 0             *    
                                                                                                       
Henry, Heather J. (10)                    5,400                   0                 0             *    
                                                                                                       
Henry, Kimberly A. (10)                   5,400                   0                 0             *    
                                                                                                       
Henry, Robert R. (11)                    16,300                   0            41,250             *    
                                                                                                       
Heritage Finance & Trust                      0                   0                 0             *    
Co.                                                                                                    
                                                                                                       
Heritage U.S.A. Value Fund                    0                   0                 0             *    
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                                       
                                                                                                       
                                                                                              Percentage                        
                                                                             Number of        Outstanding                       
                                       Number of          Number of        Shares to be      Shares to be                       
                                    Shares Offered     Shares Offered          Owned             owned                          
                                    and acquired in    and Acquired in     Beneficially      Beneficially                       
Selling                              the June 1996       March 1997            After             After                          
Stockholders(1)                         Private            Private         Completion of      Completion                        
- ---------------                        Placement          Placement          Offering        of Offering(2)                        
                                       ---------          ---------          --------        -----------                        
Kemper Clearing Corp.                         0                   0                 0             *    
Cust. FBO Henry C.                                                                                     
Herrington Jr. IRA                                                                                     
                                                                                                       
Hofferbert, J. Harv                           0                   0                 0             *    
                                                                                                       
Holsapple, Jane R.                            0                   0                 0             *    
                                                                                                       
Horowitz, Edward D.                           0                   0                 0             *    
                                                                                                       
Jacob, David                                  0                   0             4,000             *    
                                                                                                       
Jacobson, Richard M.                          0                   0                 0             *    
                                                                                                       
JAM Trust                                27,100                   0                 0             *    
                                                                                                       
Jay, Mark H. (12)                             0                   0            16,000             *    
                                                                                                       
Kallstrom, John B. &                          0                   0                 0             *    
Mary C. Kallstrom JT TEN                                                                               
                                                                                                       
Katz, Robert                             16,000                   0             3,000             *    
                                                                                                       
Kaufman Jr., C.L.                             0                   0                 0             *    
                                                                                                       
Kaufman, David L.                             0                   0                 0             *    
                                                                                                       
Kimberly Computer                        10,000                   0                 0             *    
Group Inc.                                                                                             
                                                                                                       
Knakal, Jeffrey R.                        8,000                   0                 0             *    
                                                                                                       
Knutsen, A. Roy                               0                   0             6,000             *    
                                                                                                       
Konrad, Adolf & Adair                         0                   0                 0             *    
Konrad JT TEN                                                                                          
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                                       
                                                                                              Percentage                
                                                                             Number of        Outstanding                   
                                       Number of          Number of        Shares to be      Shares to be                  
                                    Shares Offered     Shares Offered          Owned             owned                     
                                    and acquired in    and Acquired in     Beneficially      Beneficially                     
                                     the June 1996       March 1997            After             After                        
Selling                                 Private            Private         Completion of      Completion                      
Stockholders(1)                        Placement          Placement          Offering        of Offering(2)                      
- ---------------                        ---------          ---------          --------        -----------                      
Kunzli, Werner O.                             0                   0             6,400             *    
                                                                                                       
Lampl, Stephen C. & Anne                      0                   0                 0             *    
B. Shumadine TTEE                                                                                      
                                                                                                       
First Trust Corp. C/F Robert                  0                   0             2,000             *    
Le Buhn Keogh                                                                                          
                                                                                                       
Long, Patricia H.                         1,000                   0                 0             *    
                                                                                                       
Lowe, Colleen A. (13)                         0                   0            13,540             *    
                                                                                                       
Lowe, Michael (14)                            0                   0           195,000           1.3%   
                                                                                                       
Lowe, Terry D.                                0                   0                 0             *    
                                                                                                       
Lynch Jr., James H.                           0                   0                 0             *    
                                                                                                       
Madsen, MADS Peter                        8,000                   0                 0             *    
                                                                                                       
Manna, Timothy J.                             0                   0                 0             *    
                                                                                                       
Maraist, Michael P.                      32,000                   0            41,393             *    
                                                                                                       
Marden, Bernard A.                      320,000                   0                 0             *    
                                                                                                       
McCarthy, Linda T. (15)                       0                   0                 0             *    
                                                                                                       
McCash, David J.                              0                   0            14,540             *    
                                                                                                       
McCash, Donna M.                              0                   0             2,000             *    
                                                                                                       
McCash, James O.                              0                   0           298,351           2.0%   
                                                                                                       
McCash, Michael J.                            0                   0            15,040             *    
                                                                                                       
McMahen, Gary D.                              0                   0                 0             *    
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                                       
                                                                                                Percentage               
                                                                               Number of        Outstanding                  
                                         Number of          Number of        Shares to be      Shares to be                  
                                      Shares Offered     Shares Offered          Owned             owned                     
                                      and acquired in    and Acquired in     Beneficially      Beneficially   
                                       the June 1996       March 1997            After             After                     
                                          Private            Private         Completion of      Completion                   
Selling                                  Placement          Placement          Offering        of Offering(2)                   
Stockholders(1)                          ---------          ---------          --------        -----------                   
- ---------------                                                                                        
Merrion Investors LLC                    50,000                   0                 0             *    
                                                                                                       
Mesches, Kenneth S. (16)                      0                   0            42,365             *    
                                                                                                       
Milgram, Annmarie                             0                   0                 0             *    
                                                                                                       
Miller, Donald W.                        15,000                   0                 0             *    
                                                                                                       
Miller, Janet                            10,000                   0                 0             *    
                                                                                                       
Miller, Kara A.                          15,000                   0                 0             *    
                                                                                                       
Miller, Kristin L.                       15,000                   0                 0             *    
                                                                                                       
Mittelman, Abraham (17)                       0                   0            85,000           1.0%     
                                                                                                       
Monica, Armand Della                          0                   0                 0             *    
                                                                                                       
Morton III, Thruston B. &                     0                   0             4,000             *    
Patricia R. Morton TEN                                                                                 
COM                                                                                                    
                                                                                                       
Osso, Rizziero                            8,000                   0             2,000             *    
                                                                                                       
Parallax Partners                        50,000                   0                 0             *    
                                                                                                       
Pictet & CIE                                  0                   0                 0             *    
                                                                                                       
Pisani, B. Michael (18)                  22,000                   0           114,000           1.0%   
                                                                                                       
Pisani, Michael B.                          500                   0                 0             *    
                                                                                                       
Pisani, John P.                          10,000                   0                 0             *    
                                                                                                       
Rankin, Carlton                               0                   0            10,500             *    
                                                                                                       
                                                                                                       
                                                                                                       
                                                                                                       
<PAGE>                                                                                                 
                                                                                             Percentage                        
                                                                            Number of        Outstanding                      
                                      Number of          Number of        Shares to be      Shares to be                      
                                   Shares Offered     Shares Offered          Owned             owned                         
                                   and acquired in    and Acquired in     Beneficially      Beneficially                      
                                    the June 1996       March 1997            After             After                         
                                       Private            Private         Completion of      Completion                       
                                      Placement          Placement          Offering        of Offering(2)                      
Selling                               ---------          ---------          --------        -----------                       
Stockholders(1)                                                                                        
- ---------------                                                                                        
Roberts, W. Daniel &                     41,500                   0            11,000             *    
Maureen M.Roberts JT                                                                                   
WROS                                                                                                   
                                                                                                       
Rosenwald, Barbara K.                         0                   0                 0             *    
                                                                                                       
Saltus, Susan E.                              0                   0                 0             *    
                                                                                                       
Samet, Roger H.                               0                   0            85,000            1.0%  
                                                                                                       
Sands, Marvin                            24,000                   0                 0             *    
                                                                                                       
Schierloh, John (19)                          0                   0            40,000             *    
                                                                                                       
Shaw, Michael R.                          1,000                   0                 0             *    
                                                                                                       
Shogen, Kuslima (20)                          0                   0         2,285,223           14.1%  
                                                                                                       
Siegel, Allen (21)                            0                   0           194,562           1.3%   
                                                                                                       
Siegel, Josana                                0                   0                 0             *    
                                                                                                       
Siracusa, Richard IRA                         0                   0             2,000             *    
                                                                                                       
Skidmore, C. Eric C/F                         0                   0                 0             *    
Amelia C. Skidmore UGMA                                                                                
TX                                                                                                     
                                                                                                       
Skidmore, C. Eric C/F Julia                   0                   0                 0             *    
Skidmore UGMA TX                                                                                       
                                                                                                       
Skidmore, Dr. Eric                            0                   0             2,500             *    
                                                                                                       
Skidmore, John E.                             0                   0                 0             *    
                                                                                                       
                                                                                                       
                                                                                                   
                                                                                                       
<PAGE>                                                                                                 
                                                                                                                                
                                                                                               Percentage                  
                                                                              Number of        Outstanding           
                                        Number of          Number of        Shares to be      Shares to be           
                                     Shares Offered     Shares Offered          Owned             owned              
                                     and acquired in    and Acquired in     Beneficially      Beneficially           
                                      the June 1996       March 1997            After             After              
                                         Private            Private         Completion of      Completion            
Selling                                 Placement          Placement          Offering        of Offering(2)  
Stockholders(1)                         ---------          ---------          --------        -----------            
- ---------------                                                                                        
Spengler, Thomas M. amd                       0                   0             1,000             *    
Michele P. Spengler JT                                                                                 
WROS                                                                                                   
                                                                                                       
Starita, Fred A.                              0                   0                 0             *    
                                                                                                       
Stroud, Edward A.                             0                   0                 0             *    
                                                                                                       
Sylvester, Carmine                            0                   0            10,000             *    
                                                                                                       
Thall, Richard S. & Alice                16,000                   0             5,000             *    
Thall TEN COM                                                                                          
                                                                                                       
Thieme Fonds                             17,030                   0                 0             *    
                                                                                                       
Thompson, Mary M. (22)                        0                   0            18,140             *    
                                                                                                       
Trethewey, Robert R.                          0                   0            21,362             *    
                                                                                                       
Tierney, James G. & Shirley              27,100                   0             4,300             *    
A. Tierney TTEES                                                                                       
                                                                                                       
Walker, David R.                              0                   0                 0             *    
                                                                                                       
Walter, Peter                                 0                   0                 0             *    
                                                                                                       
Windsor Partners L.P.                    20,000                   0                 0             *    
                                                                                                       
Wingfield, Charles L.                         0                   0                 0             *    
                                                                                                       
Woodmere Court Investment                     0                   0                 0             *    
=====================================================================================================
</TABLE>
                                   

Footnotes appear on following page.

                                                           -21-

<PAGE>

(*)  Less than one percent.

(1)  The last name of each individual Seller Stockholders is listed first.

(2)  Based  upon  shares of Common  Stock  outstanding  as of June 2, 1997 after
     giving  effect to shares of Common  Stock  underlying  options or  warrants
     which are deemed to be owned beneficially by the Selling Stockholders.

(3)  Includes 29,641 shares of Common Stock owned by Mr. Barlow's wife.

(4)  Includes 115,077 shares owned by Ms. Barlow's husband.

(5)  Dr. Bloom's  beneficial  ownership  includes  18,000 shares owned by C.S.W.
     Investment Corporation, which is a corporation controlled by Dr. Bloom

(6)  Charles  Boynton  was a  consultant  to  the  Company  and  his  beneficial
     ownership   includes  shares  underlying   options  received  for  services
     rendered.

(7)  Dr.  Costanzi is a member of the Company's  Scientific  Advisory  Board and
     received his Options for services rendered.

(8)  John  Frohling  previously  served  as legal  counsel  to the  Company  and
     received his shares of Common Stock in the September 1994 Private Placement
     in consideration  for his conversion of $44,000 of debt owed by the Company
     to him.

(9)  Doris L. and Gerald Graska are parties to the Company's  Supply  Agreement.
     Doris L. and Gerald Graska's  beneficial  ownership  includes 21,000 shares
     owned by R.P. Biologicals, which is a corporation controlled by them.

(10) Mr.  Henry  is a  Director  of the  Company  and is a  member  of both  the
     compensation  committee  and audit  committee.  Heather  Henry and Kimberly
     Henry are Mr. Henry's daughters.

(11) Robert  Henry is a  director  of the  Company  and is a member  of both the
     Compensation Committee and Audit Committee.

(12) Mark H. Jay currently  serves as the  Company's  patent  attorney.  Mr. Jay
     received his shares of Common Stock and matching Warrants in the March 1994
     and September 1994 Private Placements.

(13) Includes  2,500  shares  registered  in the name of  Colleen  A.  Dille and
     offered hereby.

(14) Michael Lowe is the  Company's  President  and was formerly a consultant to
     the Company and a member of the Company's  Scientific  Advisory  Board.  He
     received his Options for services rendered.

(15) Linda McCarthy has in the past served as the Company's  legal counsel.  Ms.
     McCarthy  received her shares of Common Stock in the September 1994 Private
     Placement  in  consideration  for the  conversion  of $50,000  of  accounts
     payable to her.

(16) Includes  49,215 held by Kenneth S. Mesches  TTEE Kenneth S. Mesches  Money
     Purchase Plan.

(17) Abraham Mittelman is a member of the Company's  Scientific  Advisory Board.
     He received his Options for services rendered.

                                      -22-

<PAGE>

(18) Michael Pisani was a consultant to the Company and his beneficial ownership
     includes shares underlying options he received for services  rendered.  Mr.
     Pisani's  beneficial  ownership  includes  15,000  shares  owned by Granite
     Securities Corporation, which is a corporation controlled by Mr. Pisani.

(19) John  Schierloh was a consultant to the Company and received  72,800 shares
     of Common Stock and matching  Warrants in the March 1994 Private  Placement
     in consideration  for conversion of $182,000 of debt owed by the Company to
     him and 73,804  Options in  consideration  for  conversion  of  $142,441 of
     Company debt.

(20) Kuslima  Shogen  is the  Chief  Executive  Officer  and a  director  of the
     Company.  Ms. Shogen is also a principal  stockholder of the Company. As of
     the date  hereof,  Ms.  Shogen's  Option  to  purchase  379,678  shares  is
     exercisable as to 227,808 shares.

(21) Allen Siegel is a director of the Company and a member of the  Compensation
     Committee  and  received  his Options for  services  rendered.  Mr.  Siegel
     disclaims  beneficial  ownership as to the shares owned by Ina Siegel,  his
     wife.

(22) Includes  2,500 shares  registered in the name of Mary M. Richards  offered
     hereby.

                                      -23-

<PAGE>

                              PLAN OF DISTRIBUTION

         Shares of Common Stock currently outstanding and shares of Common Stock
issuable upon exercise of the Warrants,  the Options and the Bank Warrant may be
sold pursuant to this  Prospectus by the Selling  Stockholders.  These sales may
occur in privately  negotiated  transactions or in the  over-the-counter  market
through  brokers and dealers as agents or to brokers and dealers as  principals,
who  may  receive  compensation  in  the  form  of  discounts,   concessions  or
commissions  from the Selling  Stockholders or from the purchasers of the Common
Stock for whom the  broker-dealers  may act as agent or to whom they may sell as
principal, or both. Certain of the Selling Stockholders may also sell certain of
their shares of Common Stock pursuant to Rule 144 under the Securities  Act. The
Company has been advised by the Selling Stockholders that they have not made any
arrangements  relating to the distribution of the shares of Common Stock covered
by this Prospectus.  In effecting sales,  broker-dealers  engaged by the Selling
Stockholders may arrange for other broker-dealers to participate. Broker-dealers
will receive  commissions or discounts from the Selling  Stockholders in amounts
to be negotiated immediately prior to the sale.

         Upon  being  notified  by  a  Selling  Stockholder  that  any  material
arrangement  (other  than a  customary  brokerage  account  agreement)  has been
entered  into  with a broker or  dealer  for the sale of shares  through a block
trade, purchase by a broker or dealer, or similar transaction,  the Company will
file a supplemented  Prospectus pursuant to Rule 424(c) under the Securities Act
disclosing  (a) the name of each such  broker-dealer,  (b) the  number of shares
involved, (c) the price at which such shares were sold, (d) the commissions paid
or discounts or concessions allowed to such broker-dealer(s), (e) if applicable,
that such  broker-dealer(s)  did not  conduct  any  investigation  to verify the
information  set  out  or  incorporated  by  reference  in  the  Prospectus,  as
supplemented, and (f) any other facts material to the transaction.

         Certain of the Selling  Stockholders and any broker-dealers who execute
sales for the Selling Stockholders may be deemed to be "underwriters" within the
meaning of the  Securities Act by virtue of the number of shares of Common Stock
to be sold or resold by such persons or entities or the manner of sale  thereof,
or both.  If any of the Selling  Stockholders,  broker-dealers  or other holders
were determined to be  underwriters,  any discounts,  concessions or commissions
received by them or by brokers or dealers acting on their behalf and any profits
received by them on the resale of their  shares of Common  Stock might be deemed
underwriting discounts and commissions under the Securities Act.

         The Selling  Stockholders  have  represented  to the  Company  that any
purchase  or sale  of the  Common  Stock  by them  will  be in  compliance  with
Regulation M ("Regulation M") promulgated  under the Securities  Exchange Act of
1934, as amended (the "Exchange  Act"). In general,  Rule 102 under Regulation M
prohibits any person connected with a distribution of the Company's Common Stock
(the  "Distribution") from directly or indirectly bidding for, or purchasing for
any account in which he has a beneficial interest, any Common Stock or any right
to purchase  Common Stock, or attempting to induce any person to purchase Common
Stock or rights to purchase Common Stock, for a period of one business day prior
to and subsequent to completion of his  participation in the  Distribution  (the
"Distribution Period").

         During the Distribution  Period, Rule 104 ("Rule 104") under Regulation
M  prohibits  the  Selling  Stockholders  and any other  person  engaged  in the
Distribution from engaging in any stabilizing bid or purchasing the Common Stock
except for the purpose of  preventing  or retarding a decline in the open market
price of the Common Stock. No such person may effect any stabilizing transaction
to facilitate any offering at the market.  Inasmuch as the Selling  Stockholders
will be  reoffering  and  reselling  the Common  Stock at the  market,  Rule 104
prohibits them from effecting any stabilizing  transaction in  contravention  of
Rule 104 with respect to the Common Stock.


                                      -24-

<PAGE>

                                  LEGAL MATTERS

         The  legality  of the shares of Common  Stock  offered  hereby has been
passed on for the Company by Ross & Hardies, New York, New York.


                                     EXPERTS

         The financial  statements of Alfacell  Corporation (a development stage
company)  as of July  31,  1996  and  1995  and for  each  of the  years  in the
three-year  period ended July 31, 1996,  and for the period from August 24, 1981
(date of inception) to July 31, 1996, have been incorporated by reference herein
and in the  Registration  Statement  in  reliance  upon the  report of KPMG Peat
Marwick LLP, independent certified public accountants, incorporated by reference
herein,  and upon the  authority  of said  firm as  experts  in  accounting  and
auditing.  The report of KPMG Peat  Marwick  LLP as it relates to the  financial
statements  for the period from August 24, 1981 (date of  inception) to July 31,
1996 is based on the report of Armus  Harrison & Co.  ("AHC") as to the  amounts
included therein for the period from August 24, 1981 (date of inception) to July
31, 1992. As discussed  further  under "Risk Factors - Termination  of Company's
Auditors," on December 1, 1993,  certain  shareholders  of AHC terminated  their
association  with  AHC,  and  AHC  ceased  performing  accounting  and  auditing
services,  except for limited  accounting  services to be performed on behalf of
the Company.  In June 1996, AHC dissolved and ceased all operations.  The report
of AHC with respect to the Financial Statements of the Company from inception to
July 31, 1992 is  incorporated by reference into the  Registration  Statement of
which  this  Prospectus  forms a part,  although  AHC has not  consented  to the
incorporation  of such  report  herein  and  will  not be able  to  perform  any
subsequent review procedures with respect to such report.


                                      -25-

<PAGE>
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 14.            Other Expenses of Issuance and Distribution

         The  following  table  sets  forth  an  itemized  estimate  of fees and
expenses  payable by the  Registrant  in  connection  with the  offering  of the
securities  described in this  registration  statement,  other than underwriting
discounts and commissions.

SEC registration fee...................................     $    19,300  *
                                                             -----------
Legal fees and expenses..................................    $  120,000 *
                                                              ----------
Accounting fees and expenses.............................   $    80,000  *
                                                             -----------
Miscellaneous...........................................    $     7,700  *
                                                             -----------
Printing expenses........................................   $    16,000  *
                                                             -----------

                         Total..........................    $   243,000  *
                                                             -----------

*        Includes  expenses  paid  through  the date hereof in  connection  with
         registrations of the shares of Common Stock included herein  previously
         filed with the Commission.


Item 15. Indemnification of Directors and Officers

         Under  Section 145 of the  General  Corporation  Law of  Delaware  (the
"GCL")  a  corporation  may  indemnify  any  person  who was or is a party or is
threatened to be made a party to any  threatened,  pending or completed  action,
suit or proceeding,  whether civil,  criminal,  administrative  or investigative
(other than an action by or in the right of the  corporation),  by reason of the
fact  that  he  is or  was  a  director,  officer,  employee  or  agent  of  the
corporation,   or  is  or  was  serving  at  the  request  of  the  corporation,
partnership,   joint  venture,   trust  or  other  enterprise  against  expenses
(including  attorneys'  fees),  judgments,  fines and amounts paid in settlement
actually  and  reasonably  incurred  in  connection  with such  action,  suit or
proceeding if he acted in good faith and in a manner he  reasonably  believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal  action or  proceeding,  had no reasonable  cause to believe his
conduct was unlawful.

         A corporation also may indemnify any person who was or is a party or is
threatened to be made a party to any threatened,  pending or completed action or
suit by or in the right of the corporation to procure a judgment in its favor by
reason of the fact that he is or was a director,  officer,  employee or agent of
the  corporation,  or is or was serving at the request of the  corporation  as a
director, officer, employee or agent of another corporation,  partnership, joint
venture,  trust or other enterprise against expenses (including attorneys' fees)
actually  and  reasonably  incurred  by him in  connection  with the  defense or
settlement  of such  action or suit if he acted in good faith and in a manner he
reasonably  believed  to be in or not  opposed  to  the  best  interests  of the
corporation.  However,  in such an action by or on behalf of a  corporation,  no
indemnification may be made in respect of any claim, issue or matter as to which
the person is adjudged liable to the  corporation  unless and only to the extent
that the court  determines  that,  despite the  adjudication of liability but in
view of all the circumstances,  the person is fairly and reasonably  entitled to
indemnity for such expenses which the court shall deem proper.

         In addition,  the indemnification  provided by Section 145 shall not be
deemed exclusive of any other rights to which those seeking  indemnification may
be entitled under any bylaw,  agreement,  vote of stockholders or  disinterested
directors or  otherwise,  both as to action in his  official  capacity and as to
action in another  capacity  while  holding  such  office.  The  Certificate  of
Incorporation of the Company is consistent with Section 145 of the

                                      II-1

<PAGE>

GCL and its Bylaws  provide that each director,  officer,  employee and agent of
the Company shall be indemnified to the extent permitted by the GCL.

         In this  connection,  the  Company  has  entered  into  indemnification
agreements  (the  "Indemnity  Agreements")  with  each  of  its  directors.  The
Indemnity Agreements are consistent with the Company's By-laws and the Company's
policy to  indemnify  directors  to the fullest  extent  permitted  by law.  The
Indemnity  Agreements  provide for  indemnification of directors for liabilities
arising out of claims  against such  persons  acting as directors of the Company
(or any entity  controlling,  controlled  by or under  common  control  with the
Company)  due  to  any  actual  or  alleged  breach  of  duty,  neglect,  error,
misstatement,  misleading statement,  omission or other act done, or suffered or
wrongfully  attempted  by such  directors,  except  as  prohibited  by law.  The
Indemnity  Agreements  also provide for the  advancement  of costs and expenses,
including  attorneys'  fees,  reasonably  incurred by  directors in defending or
investigating any action,  suit,  proceeding or claim, subject to an undertaking
by such directors to repay such amounts if it is ultimately determined that such
directors are not entitled to  indemnification.  The Indemnity  Agreements cover
future acts and omissions of directors for which actions may be brought.

         The  Indemnity  Agreements  also  provide  that  directors,   officers,
employees  and agents are  entitled  to  indemnification  against  all  expenses
(including  attorneys'  fees)  reasonably  incurred  in  seeking  to  collect an
indemnity  claim or to obtain  advancement  of expenses  from the  Company.  The
rights of directors  under the  Indemnity  Agreements  are not  exclusive of any
other rights  directors may have under  Delaware  law, any  liability  insurance
policies that may be obtained,  the Company's By-Laws or otherwise.  The Company
would not be  required  to  indemnify  a director  for any claim  based upon the
director  gaining in fact a personal  profit or advantage to which such director
was not  legally  entitled,  any  claim for an  accounting  of  profits  made in
connection  with a violation of Section 16(b) of the Securities  Exchange Act of
1934 or a similar  state or common law  provision or any claim  brought about or
contributed to by the dishonesty of the director.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  Registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.


                                      II-2

<PAGE>

Item 16.  Exhibits

         The  following  are  filed  either  as  exhibits  to this  Registration
Statement or  incorporated  by  reference to the exhibits to prior  Registration
Statements and reports of the Registrant as indicated:

          (a) Exhibits (numbered in accordance with Item 601 of Regulation S-K).


                                                               Exhibit No. or
    Exhibit                                                    Incorporation
      No.          Item Title                                    by Reference
     -----         ----------                                    ------------
           5.1     Opinion of Ross & Hardies                           #
          21.0     Subsidiaries of Registrant                          *
          23.1     Consent of Ross & Hardies 
                    (included in Exhibit 5.1)
          23.2     Consent of KPMG Peat Marwick LLP                    #
          24.0     Powers of Attorney                                  +


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

*    Previously  filed as exhibits to the  Company's  Annual Report on Form 10-K
     for the year  ended  July 31,  1993 and  incorporated  herein by  reference
     thereto.

+    Powers of Attorney are contained in signatures.

#    Filed herewith.



Item 17.   Undertakings

The undersigned registrant hereby undertakes:

           (1) To file,  during  any  period in which  offers or sales are being
made, a post-effective amendment to this registration statement:

               (i) To include any prospectus required by Section 10(a)(3) of the
          Securities Act of 1933;

                  (ii) To reflect in the  prospectus any facts or events arising
after the  effective  date of the  registration  statement  (or the most  recent
post-effective  amendment  thereof)  which,  individually  or in the  aggregate,
represent a fundamental  change in the information set forth in the registration
statement.  Notwithstanding the foregoing, any increase or decrease in volume of
securities  offered (if the total dollar value of  securities  offered would not
exceed that which was  registered) and any deviation from the low or high end of
the estimated  maximum offering range may be reflected in the form of prospectus
filed with the  Commission  pursuant  to Rule 424(b) if, in the  aggregate,  the
changes  in the  volume  and price  represent  no more than a 20%  change in the
maximum

                                      II-3

<PAGE>

aggregate  offering price set forth in the  "Calculation  of  Registration  Fee"
table in the effective registration statement.

                  (iii) To include any material  information with respect to the
plan of distribution not previously  disclosed in the registration  statement or
any material change to such information in the registration statement:

           Provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if
the  registration  statement  is on Form  S-3,  Form  S-8 or Form  F-3,  and the
information  required  to be  included in a  post-effective  amendment  by those
paragraphs is contained in the periodic reports filed by the Registrant pursuant
to Section 13 or Section 15(d) of the  Securities  Exchange Act of 1934 that are
incorporated by reference in the registration statement.

           (2) That,  for the purpose of  determining  any  liability  under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

           (3)  To  remove  from  registration  by  means  of  a  post-effective
amendment  any of the  securities  being  registered  which remain unsold at the
termination of the offering.

           (4)  That,  for  purposes  of  determining  any  liability  under the
Securities Act of 1933, each filing of the  Registrant's  annual report pursuant
to Section  13(a) or Section 15(d) of the  Securities  Exchange Act of 1934 (and
where  applicable,  each  filing of an employee  benefit  plan's  annual  report
pursuant  to  Section  15(d) of the  Securities  Exchange  Act of 1934)  that is
incorporated by reference in this Registration Statement shall be deemed to be a
new Registration  Statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

           (5) Insofar as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the Registrant pursuant to the foregoing provisions or otherwise, the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the Registrant of expenses
incurred or paid by a director,  officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.


                                      II-4

<PAGE>

                                   SIGNATURES

           Pursuant  to the  requirements  of the  Securities  Act of 1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized in the City of Bloomfield, State of New Jersey, on June 13, 1997.

                                                            ALFACELL CORPORATION



                                                           By: /S/KUSLIMA SHOGEN
                                                           ---------------------
                                                                 Kuslima Shogen,
                                                              Chairman and Chief
                                                               Executive Officer



                                POWER OF ATTORNEY

           KNOW ALL MEN BY THESE  PRESENTS,  that each  person  whose  signature
appears below hereby constitutes and appoints Kuslima Shogen and Gail E. Fraser,
his true and lawful  attorneys-in-fact  and agents, each acting alone, with full
powers of substitution  and  resubstitution,  for him and in his name, place and
stead,  in any  and all  capacities,  to sign  any  and all  amendments  to this
Registration  Statement and to file the same, with all exhibits thereto, and all
other  documents  in  connection  therewith,  with the  Securities  and Exchange
Commission,  granting unto said  attorneys-in-fact and agents, and each of them,
full  power  and  authority  to do and  perform  each and  every  act and  thing
requisite and  necessary to be done, in and about the premises,  as fully to all
intents and  purposes as he might or could do in person,  hereby  ratifying  and
confirming all that said attorneys-in-fact and agents, each acting alone, or his
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.


<PAGE>

           Pursuant to the  requirements  of the  Securities  Act of 1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.


           Signature                       Capacity                  Date
           --------------------------------------------------------------


/S/KUSLIMA SHOGEN                 Chairman, Chief               June 13, 1997
Kuslima Shogen                    Executive Officer and
                                  Director (Principal
                                  Executive Officer)


/S/MICHAEL C. LOWE                President and Director        June 13, 1997
Michael C. Lowe, Ph.D.



/S/GAIL E. FRASER                 Vice President -              June 13, 1997
Gail E. Fraser                    Finance and
                                  Chief Financial
                                  Officer and Director
                                  (Principal Financial
                                  Officer and Principal
                                  Accounting Officer)


/S/STANISLAW M. MIKULSKI, M.D.    Executive Vice                June 13, 1997
Stanislaw M. Mikulski, M.D.       President, Medical
                                  Director and Director


/S/ALAN BELL                      Director                      June 10, 1997
Alan Bell


/S/STEPHEN K. CARTER, M.D.        Director                      June 13, 1997
Stephen K. Carter, M.D.


/S/DONALD R. CONKLIN              Director                      June 13, 1997
Donald R. Conklin


/S/ROBERT R. HENRY                Director                       June 13, 1997
Robert R. Henry


/S/ALLEN SIEGEL                   Director                       June 13, 1997
Allen Siegel, D.D.S.


<PAGE>


                              ALFACELL CORPORATION

                                  EXHIBIT INDEX

                                                             Location of Exhibit
                                                                in Sequential
                                                                Numbering System

Exhibit No.    Description

    5.1        Opinion of Ross & Hardies regarding legality

    23.2       Consent of KPMG Peat Marwick LLP

                                                                     Exhibit 5.1


June 13, 1997



Alfacell Corporation
225 Belleville Avenue
Bloomfield, NJ  07003

Re:      Alfacell Corporation
         Registration Statement on Form S-3

Ladies and Gentlemen:

                  You have  requested  our  opinion  with  respect to the public
offering and sale by certain selling  stockholders (the "Selling  Stockholders")
of Alfacell Corporation,  a Delaware corporation (the "Company"),  pursuant to a
Registration  Statement  on Form S-3  (the  "Registration  Statement")  of up to
4,788,907  shares of the Company's  common stock,  $.01 par value per share (the
"Common Stock") of which (i) 3,485,974 shares (the "Outstanding  Common Shares")
are outstanding and held by the Selling  Stockholders;  (ii) 839,451 shares (the
"Warrant  Shares") are issuable upon exercise of warrants (the  "Warrants") held
by the Selling  Stockholders;  (iii) up to 453,482 shares (the "Option  Shares")
are shares which may be issued to the Selling  Stockholders upon the exercise of
certain  options (the  "Options")  of the Company;  and (iv) up to 10,000 shares
(the  "Bank  Warrant  Shares")  are  shares  which may be issued to the  Selling
Stockholders  only upon the  exercise  of the Bank  Warrants  (as defined in the
Registration Statement).

                  In  this   connection   we  have  prepared  and  examined  the
Registration Statement, the Company's Certificate of Incorporation,  as amended;
the Company's By-laws, as amended;  records of applicable corporate  proceedings
of the Company;  and such other documents as we have deemed necessary as a basis
for the opinion  herein  expressed.  With  respect to such  examination  we have
assumed  the  legal  capacity  to sign  and the  genuineness  of all  signatures
appearing on all documents  presented to us as originals,  and the conformity to
the  originals of all  documents  presented  to us as  conformed  or  reproduced
copies.  With  respect to factual  matters  relevant  to such  opinion,  we have
relied,   without  independent   verification   thereof,  upon  certificates  of
appropriate  state and local  officials and executive  officers and  responsible
employees and agents of the Company.

                  Based upon the foregoing, and in reliance thereon, and subject
to the limitations and  qualifications  set forth herein,  we are of the opinion
that:

     1. The Outstanding Common Shares are legally and validly issued, fully paid
and non-assessable.

     2. When issued and paid for in accordance  with the  Warrants,  the Warrant
Shares will be legally and validly issued, fully paid and non-assessable shares.

     3. When  issued and paid for in  accordance  with the  Options,  the Option
Shares will be legally and validly issued, fully paid and non-assessable shares.

     4. When issued and paid for in accordance with the Bank Warrants,  the Bank
Warrant Shares will be legally and validly issued, fully paid and non-assessable
shares.



<PAGE>

                  We  consent  to  the  use  of our  name  in  the  Registration
Statement and the related  Prospectus under the caption "Legal Matters",  and we
consent  to the  filing  of  this  opinion  as an  Exhibit  to the  Registration
Statement.


                                                     Very truly yours,

                                                     /S/ROSS & HARDIES
                                                     -----------------
                                                     ROSS & HARDIES

                                       -2-





                                                                    Exhibit 23.2


                          Independent Auditors' Consent


The Board of Directors
Alfacell Corporation:


We  consent  to  the  use  of  our  report  incorporated  by  reference  in  the
Registration  Statement on Form S-3 of Alfacell Corporation and to the reference
to our firm under the heading "Experts" in the Prospectus.

Our report dated  September 24, 1996 as it relates to the  financial  statements
for the period from August 24, 1981 (date of  inception)  to July 31,  1996,  is
based on the report of other auditors as to the amounts included therein for the
period of August 24, 1981 (date of inception) to July 31, 1992.




                                    /s/ KPMG PEAT MARWICK LLP
                                    -------------------------
                                    KPMG Peat Marwick LLP


Short Hills, New Jersey
June 13, 1997




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