Exhibit 10.27






                   DISTRIBUTOR AND PRODUCT SERVICES AGREEMENT*

                              Dated March 13, 1998

                                     Between

                        ALTERNATE SITE DISTRIBUTORS, INC.
                    d.b.a. BERGEN BRUNSWIG SPECIALTY COMPANY

                                       and

                               IMMUNOMEDICS, INC.


___________

*        Confidential  portions omitted and filed separately with the Securities
         and Exchange Commission.









                             DISTRIBUTOR AND PRODUCT
                               SERVICES AGREEMENT

         This Distributor and Product Services Agreement ("Agreement") made this
13th day of March, 1998 by and between ALTERNATE SITE DISTRIBUTORS, INC.  d.b.a.
BERGEN BRUNSWIG SPECIALTY COMPANY ("BBSC") and IMMUNOMEDICS, INC. ("IMMU").

                                    RECITALS

         A. IMMU is a  biopharmaceutical  Company  that  manufactures  and sells
pharmaceutical   products  including   CEA-Scan(R)  (the  "Product")  which  has
U.S.F.D.A.
approval for human use.

         B.  BBSC is in the  business  of  providing  distribution  and  product
service  support  services  to  drug  manufacturers  and  other  sectors  of the
healthcare industry.

         C. IMMU  desires to engage  BBSC to provide  product  support  services
including Distribution Services,  Order Management and Customer Services for the
Product and such other IMMU  products as the parties may agree from time to time
to add by addendum hereto.

         NOW  THEREFORE,  for good and  valuable  consideration  the receipt and
sufficiency  of  which is  hereby  acknowledged,  the  parties  hereto  agree as
follows:

         1.       Appointment

                  1.1 IMMU hereby appoints BBSC as its non-exclusive distributor
of Product in the U.S.A. and the U.S. territories.  BBSC represents and warrants
that it has the facilities and personnel  necessary to satisfactorily and timely
perform the services to be provided by it under this Agreement.

                  1.2 IMMU hereby engages BBSC to provide the services described
in the Agreement for the fees listed in Schedule "A" attached hereto and by this
reference made a part hereof.

         2.       Distribution Services

                  For the fees listed in  Schedule  "A",  BBSC will  provide the
following services:





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                  2.1      Order Process Management.

                           BBSC will provide customer service representatives to
perform the following order process management activities.

                           2.1.1  staffing  during normal customer service hours
(8:00 a.m. CT to 6:00 p.m. CT) including a live operator greeting;

                           2.1.2  management of inbound telephone calls,   faxes
and EDI transmissions relating to ordering, marketing and distribution;

                           2.1.3  twenty-four   (24)   hour  availability  in an
integrated voicemail pager service seven (7) days per week;

                           2.1.4  new  account  processing,    including  credit
verification; and

                           2.1.5  coordinating  inquiries  regarding  technical,
clinical  and  medical  issues  and  referring  directly  to  IMMU  to assure an
appropriate response by IMMU.

                  2.2      Distribution/Warehousing.

                           BBSC  will  provide  distribution   and   warehousing
services to IMMU for IMMU's national accounts and IMMU's independent accounts as
defined below:

                           2.2.1 IMMU's national accounts shall mean [*] and, on
[*] days notice to BBSC, any other  entities  which IMMU may designate from time
to time  ("National  Accounts")  including,  without limitation,  any multi-site
organization desiring  to  enter  into a  supply agreement with IMMU and meeting
IMMU's requirements therefor.

                           2.2.2  IMMU's   independent   accounts   shall   mean
hospital, clinic and independent  pharmacy  customers of IMMU and all other IMMU
customers not designated as National Accounts ("Independent Accounts").

                           2.2.3  For  National  Accounts  BBSC will provide the
following distribution and warehouse services as consignee of the Product:

                                    2.2.3.1  Acceptance  of orders  from IMMU or
direct from the National Account,  as designated by IMMU, in "lot" quantities of
[*] doses/lot or greater.

                                    2.2.3.2  Packaging  and   shipping  of   the
designated  quantity  to  the  National  Account,   to  that  account's  central
warehouse, or on request, and for




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an  additional  fee  to  be  billed  to  the National Account,   drop shipped to
individual pharmacies.

                                    2.2.3.3  Submission  of orders,   associated
documentation  (including  manufacturing  lot numbers and shipping  information)
and inventory status on a daily basis by fax or electronic transmission.

                                    2.2.3.4  Maintenance    of    the   database
required  to  facilitate  a  recall,   in  accordance  with  FDA  guidelines and
requirements should that ever become necessary.

                  2.2.4  For  Independent   Accounts,   BBSC  will  provide  the
following  distribution  and warehouse  services as the purchaser and subsequent
owner of the Product:

                                    2.2.4.1  Reception   of   incoming   orders,
either direct or through an IMMU-to-BBSC "tie line".

                                    2.2.4.2  Purchasing  from   IMMU  the  doses
required to meet those orders on a timely basis.

                                    2.2.4.3  Packaging   and   shipping  ordered
doses to the Independent Accounts.

                                    2.2.4.4  Maintenance   of    the    database
required  to  facilitate  a  recall,  in  accordance  with  FDA  guidelines  and
requirements  should that ever become necessary.

                                    2.2.4.5  Billing  and  collection  of  these
Independent Accounts.

                                    2.2.4.6  Transmission of weekly and  monthly
sales reports, by account, to IMMU.

                  2.2.5 For both  National  Accounts and  Independent  Accounts,
BBSC will warehouse and inventory the Product at BBSC's distribution facility at
[*] (the "BBSC Facility").  Product that has met all regulatory  product release
requirements will be received, and placed into inventory for distribution.  BBSC
and IMMU will  comply  with all FDA  regulations  including  product  lot record
retention. Distribution and warehousing services include the following:

                                    2.2.5.1  Continuous inventory maintenance;





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                                    2.2.5.2  Invoicing  Independent  Accounts on
BBSC invoice stock;

                                    2.2.5.3  Shipment tracking;

                                    2.2.5.4  Security costs;

                                    2.2.5.5  Drop shipments; and

                                    2.2.5.6  Shipment of  outdated/damaged goods
to site of disposal in accordance with the FDA regulations.

                           IMMU  will pay all costs,  expenses,  insurance,  and
import duties, if any, for delivery of all Product to the  BBSC facility.   BBSC
will visually inspect each shipment of Product for external container or package
damage or loss in transit (based  upon  records  provided  to  BBSC from  IMMU).
Contingent  upon  BBSC  receiving  the  appropriate  records  to  enable   batch
verification,  BBSC shall notify IMMU when  damage or loss has  occurred  within
three business days of receipt of Product by BBSC.  BBSC will store and ship all
Product in compliance with good manufacturing  practice guidelines and other FDA
requirements.   BBSC will store Product at 2(degree)  to 8(degree) centigrade at
all times.

                           Upon receipt of the order  transmission from customer
service Product will be shipped in regulatory  compliant  refrigerated  shippers
(which will be directed to maintain the required  temperature).  Orders received
by [*]  will be shipped the [*].  Products will be distributed on an FEFO (first
expired, first out) basis.

                  2.3      Emergency Deliveries.  In emergencies Product will be
shipped same day if necessary and costs will be passed through to the customer.

         3.       Data  Management  and  Reporting  (Key  Program  Activity  and
                  Management Reports)

                  The  following  types of reports will be available to IMMU for
the fees listed in Schedule "A" attached hereto:

                  3.1      transmission  of  daily  sales  by  unit  and dollars

                  3.2      sales reports by territory/region

                  3.3      inventory reports

                  3.4      credits





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                  3.5      new accounts

                  3.6      chargeback, rebate data

                  3.7 program  utilization  data including call volume,  type of
caller and reason for inquiry  down to the state level  and/or  sales  territory
level

                           IMMU  and  BBSC  will jointly  determine the types of
reports, data elements and formats,  and the  frequency  of reports that will be
required to provide key management and program oversight information.  MMU shall
receive up to [*] of the above standard reports without additional charge. There
will  be  additional  charges  for  any  further  reports requested,  based upon
programming charges.

         4.       Recalls

                  4.1 In the  event  that it  becomes  necessary  to  conduct  a
recall,  market withdrawal or field correction (a "Recall") of any Product, IMMU
shall  conduct the Recall and shall have primary  responsibility  therefor,  and
BBSC shall cooperate with IMMU in recalling any affected Product.  If the Recall
was due to the acts or omissions of IMMU,  then IMMU shall pay or reimburse,  as
the case may be, all of BBSC's direct out-of-pocket expenses,  including but not
limited to any  reasonable  attorney's  fees and  expenses,  incurred by BBSC in
connection with performing any such Recall. If the Recall was due to the acts or
omissions of BBSC then BBSC shall pay or  reimburse,  as the case may be, all of
IMMU's  direct  out-of-pocket  expenses,   including  but  not  limited  to  any
reasonable  attorneys  fees or  expenses,  incurred by IMMU in  connection  with
performing any such Recall.  Each of the parties shall use its  reasonable  best
efforts to minimize  the  expenses of Recall when it occurs.  IMMU shall  inform
BBSC of the proposed Recall within  forty-eight  (48) hours of the initiation of
the  Recall.  IMMU and BBSC  will  jointly  develop  Recall  standard  operating
procedures.

                  4.2      FDA Correspondence and Inspections

                           Each of the  parties  shall  provide the other with a
copy  of  any  correspondence  or  notices  received  by  such  party  from  FDA
specifically  relating to  distribution  of the Product  within  three  (3) days
of receipt.   Each party shall also provide the other copies of any responses to
any such correspondence or notices within three (3) days of making the response.
BBSC shall notify IMMU of any FDA inspections of BBSC's facilities  specifically
relating to any of the Product  and,  if reasonably possible,  shall afford IMMU
the  opportunity  to be present at such inspection.

         5.       Purchase of Product/Risk

                  5.1  For   Independent   Accounts,   upon  execution  of  this
Agreement:




                                       -6-






                           5.1.1  IMMU  shall  sell  Product  to  BBSC  on terms
as set out in Schedule  "A".  The price stated in Schedule "A" may be changed by
IMMU upon [*] days prior written notice to BBSC. BBSC shall buy such  quantities
of Product from IMMU as required to satisfy its obligations hereunder.

                           5.1.2  BBSC  will  obtain  title  to all  Product  on
receipt  and acceptance of  the Product at the BBSC Facility.  BBSC shall insure
Product in its control against loss in shipment from the BBSC  Facility,  damage
or natural catastrophes, acts of God or other reasons of force majeure.

                  5.2      For   National  Accounts,   upon   execution of  this
Agreement:

                           5.2.1  IMMU  shall  deliver,   and BBSC shall accept,
such quantities of the Product as shall be necessary for BBSC to fill orders for
the  Product  and  to meet the  inventory requirement of National Accounts.  All
Product delivered to BBSC for IMMU for National Accounts will be held by BBSC on
consignment and will  remain at  all times under  and subject to  the ownership,
direction and control of IMMU until sold through BBSC to the National  Accounts.
Pricing  for sales to national  accounts  shall be  established by IMMU and,  in
recognition  of  certain  marketing,  training,  product  preparation  and other
services which will be performed by National Accounts in respect of the Product,
may well differ from those set out in Schedule "A". Title to the Product held by
BBSC on  consignment will pass directly  from IMMU to the National  Accounts who
purchase  the  Product  through  BBSC.   IMMU shall bear the risk of loss of the
Product not yet delivered by BBSC to a customer, whether by fire, theft or other
casualty; provided, however, that BBSC shall indemnify IMMU for Product which is
lost  or  damaged  as a result of BBSC's  negligence.   During  the term of this
Agreement,  BBSC  will store  Product at its Facility in [*] and possibly at its
facilities in  [*],  BBSC shall notify IMMU promptly of any changes or additions
to the locations at which supplies of the Product will be maintained.

                  5.3      Return Goods Policy

                           5.3.1  BBSC shall  accept returns from customers only
pursuant to SOPs agreed  between  IMMU and  BBSC.   BBSC shall forward  unusable
Product to IMMU for final disposition in accordance with applicable regulations.
IMMU's  sole  obligation  with respect to  returned units of Product shall be to
replace  such  units  at its expense  (or, at IMMU's  option,  to issue a credit
therefore)  in accordance with the SOPs.

                           5.3.2  IMMU  shall  replace  at  its  expense,   upon
expiration of the use period  thereof, any unit of Product  for which the expiry
date shall have occurred.

                           5.3.3  IMMU shall replace at  its expense any unit of
the Product which is received by BBSC from IMMU in unsalable condition, provided
notice thereof




                                       -7-





is given to IMMU within  thirty (30) days of receipt by BBSC.  Such  replacement
unit will be delivered to BBSC within ten (10) days of receipt by IMMU of BBSC's
notice.

                           5.3.4  The  parties  agree to review the Return Goods
Policy in  light  of  their experience  with such policy and to make appropriate
revisions therein when necessary, such revisions to be agreed to in writing.

         6.       Certain Obligations of the Parties

                  6.1 IMMU and BBSC  will  jointly  develop  standard  operating
procedures  ("SOP's") in accordance with IMMU directives and consistent with FDA
regulations within thirty (30) days from execution of this Agreement.

                  6.2      IMMU will deliver Product in boxes containing one (1)
vial per box.

                  6.3 IMMU will provide  package inserts for all single vial and
other quantities.

                  6.4 IMMU  warrants and  represents  to BBSC that the execution
and  performance  of this  Agreement  will not breach any existing  contracts or
arrangements that IMMU has entered into with any third parties including but not
limited to Mallinckrodt, Inc.

                           BBSC  understands   that   IMMU  has  terminated  its
distribution arrangements with Mallinckrodt  Medical,   Inc., effective April 5,
1998, or such earlier date as shall be feasible.  BBSC and IMMU  shall cooperate
in the transition of the distribution function from Mallinckrodt to BBSC.

                  6.5 IMMU will provide dedicated sales personnel to be the BBSC
account manager for all communications regarding this Agreement.

                  6.6  IMMU  will  assist  BBSC  in  training   BBSC   personnel
concerning CEA-Scan.

         7.       Term And Termination

                  7.1      Initial Term

                           This  Agreement  shall be effective on April 6, 1998,
or such earlier date as IMMU's distribution arrangements with Mallinckrodt shall
terminate or Mallinckrodt shall otherwise  onsent,  and shall  continue  in full
force and effect  thereafter for a period of [*] from such effective date unless
sooner terminated as provided herein. This Agreement shall  automatically  renew
for successive [*] periods unless terminated as provided herein.




                                       -8-






                  7.2      Termination

                           This  Agreement  may  be  terminated by  either party
without cause on ninety (90) days written notice to the other.

                  7.3 A party may  terminate  this  Agreement  immediately  upon
written notice for the following causes:

                           7.3.1  the  commencement of a voluntary case or other
proceeding seeking liquidation,  reorganization  or other relief with respect to
the other party of its debts under any  bankruptcy,  insolvency,  corporation or
other similar law now or hereafter in effect; or (ii) the other party's making a
general  assignment for the benefit of creditors,  or the other party's becoming
insolvent,  or the other party taking any  corporate  action to authorize any of
the foregoing;

                           7.3.2  the  other  party's  failure to pay any amount
that  is  due to the non-breaching  party  under this Agreement and such failure
continues  for seven  (7)  days after the other  party receives  notice of  such
breach from the non-breaching party;

                           7.3.3  the  other  party's  failure to perform any of
its material obligations under this  Agreement,  and such failure  continues for
thirty  (30)  days after the other party receives notice of such breach from the
non-breaching
party;  provided,  however, if the other party has commenced to cure such breach
within such thirty (30) days, but such cure is not completed  within said thirty
(30) days,  the other  party  shall be afforded  the amount of  additional  time
reasonably  necessary  to  complete  said cure,  provided  that the other  party
diligently pursues curing the breach until completion; and

                           7.3.4  the  other  party's  failure  to  perform  the
distribution  services  as  described in Section  2.0  for a period of more than
thirty  (30) days as a result of a force majeure event specified in Section 22.

                  7.4 For the purposes of Section  7.3.3  above,  the failure of
performance by BBSC hereunder shall be measured  against  mutually agreed S.O.Ps
and program performance measures.

                  7.5 All accrued payment  obligations of the parties under this
Agreement,  and  Sections  11 through 15,  inclusive,  of this  Agreement  shall
survive the termination of this Agreement and,  except as provided  elsewhere in
this Agreement, no termination of this Agreement shall affect any obligations or
liabilities  arising,  or based upon acts or omissions  occurring,  prior to the
date of such termination.  All fees shall be non-refundable.  Within thirty (30)
days of termination,  for whatever cause or no cause,  for Independent  Accounts
Product, IMMU shall repurchase all inventory




                                       -9-





sold to BBSC at BBSC's acquisition cost and for National Accounts Product,  BBSC
shall return to IMMU or destroy,  in accordance with IMMU's  instructions and at
IMMU's cost, all inventory of Product previously  consigned to BBSC and not sold
to customers.  If BBSC shall have terminated this Agreement without cause, or if
IMMU  shall have  terminated  for cause,  BBSC  shall pay the  freight  costs to
deliver such inventory to IMMU. If this Agreement  shall have terminated for any
other  reason,  IMMU shall pay the  reasonable  freight  costs to  deliver  such
inventory to IMMU.

         8.       Disaster Recovery

                  BBSC and IMMU shall  cooperate to develop a disaster  recovery
service specific to IMMU's needs during the implementation  process.  This shall
be drafted as a standard operating procedure ("SOP").

         9.       Compensation - Fees for Services

                  9.1      Consignment Distribution Fee

                           IMMU  shall  pay fees to BBSC as detailed in Schedule
"A".   BBSC  shall invoice IMMU within [*]  days of the  previous calendar month
end.  IMMU shall pay all invoices within [*] days of the invoice date.

                  9.2      Hourly Fees

                           In  addition  to  the  fees  for services detailed in
Sections  1 and 2,  the  following  services  will be provided  by BBSC on an as
required  basis and  shall be billed  at the rate  of  [*] per hour as listed in
Schedule "A":

                           The  provision  of custom  sales reports requested by
IMMU  for  specific  territories  and/or time periods.  The creation of software
designed to produce such custom sales  reports and all other  services  required
by  IMMU  for  the  provision  of custom management report set-up.  A reasonable
estimate of such charge shall be provided in advance.

                  9.3      Travel Costs

                           IMMU  will pay  to BBSC all reasonable costs incurred
while traveling for  and  on behalf of  IMMU  at  IMMU's  request.  A reasonable
estimate of such charge shall be provided in advance.

                  9.4      Auditing Rights

                           BBSC shall  keep records relating to the transactions
covered  by  this  Agreement, which records shall be available for inspection by
IMMU to confirm




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that the correct amounts have been paid under this Agreement.  Such  inspections
shall  take place not more than once per year at BBSC's  offices  and on no less
than thirty (30) days notice and during normal business hours.

         10.      Compliance with Laws

                  10.1  During  the term of this  Agreement,  each  party  shall
conduct its activities in connection  with this Agreement in compliance with all
applicable   laws.   Specifically,   BBSC  shall  comply  with  all   applicable
Requirements  of Law  related  to the  storage,  handling  and  distribution  of
Product,  and IMMU shall comply with all applicable  Requirements of Law related
to the  importation,  manufacture,  distribution,  labeling,  storage,  sale and
handling of Product.  IMMU shall have the right, not more than once per year and
on no less than thirty (30) days notice and during  normal  business  hours,  to
inspect BBSC's facilities to confirm compliance with all applicable Requirements
of Law related to the storage,  handling and  distribution of Product,  provided
that IMMU  acknowledges  that such  inspection  shall be limited to such  extent
required to comply with laws and to maintain the confidentiality of BBSC's other
customers and clients.

                  10.2 IMMU agrees and does hereby represent and warrant to BBSC
during the term of this  Agreement  that (1) all Product,  and each  shipment of
each,  or other  delivery now and  hereafter  made by IMMU to or on the order of
BBSC will not be, at the time of shipment or delivery,  adulterated,  misbranded
or otherwise  prohibited  within the meaning of the Act or within the meaning of
any applicable state or municipal law and (2) the Product is not, at the time of
shipment  or  delivery  to BBSC,  merchandise  which  may not be  introduced  or
delivered for  introduction  into  interstate  commerce  under the provisions of
Sections  404 or 405 of the Act, and (3) all such Product will be the subject of
a duly  approved  BLA and may be legally  transported  or sold under  applicable
Requirements of Law and IMMU guarantees that only those chemicals or sprays, and
the amounts of such  chemicals or sprays,  approved by  Governmental  Authority,
have  been  used in any of the  Product,  and (4) ail  Product  have  been  duly
approved by all  Governmental  Authority for commercial sale and shipment within
the United States.

         11.      Corporate Authority

                  During  the term of this  Agreement,  each  party  continually
represents  and warrants to the other that:  (a) it has full power and authority
to enter into this  Agreement  and  perform  and  observe  all  obligations  and
conditions  to be performed or observed by it under this  Agreement  without any
restriction by any other agreement or otherwise, (b) the execution, delivery and
performance  of this  Agreement  have  been  duly  authorized  by all  necessary
corporate action of that Party, (c) this Agreement  constitutes the legal, valid
and binding  obligation  of that Party,  (d) no approvals,  consents,  orders or
authorizations of or designation, registration, declaration or filing




                                      -11-





with any  Governmental  Authority  (within,  as a part of, or  constituting  the
United  States of  America)  is required  for the sale and  distribution  of the
Product other than any approvals  previously obtained from the FDA, (e) there is
no action,  proceeding, or investigation pending or, so far as each party knows,
threatened,  which  questions  the validity of this  Agreement,  the patents and
licenses  related  to and for the  Product,  any  actions  taken  or to be taken
pursuant to this Agreement,  and (f) the Product,  or any part thereof,  has not
been materially  adversely affected in any way as a result of any legislative or
regulatory  change,  or any  revocation  of  license  or right  to  manufacture,
distribute, handle, store, sell or market any of the Product.

         12.      Trade Marks/Data

                  Neither  Party  shall  have  the  right to use the name of the
other Party or the other Party's trademarks, service marks, logos, other similar
marks or data and  information  in any manner except to the extent  necessary to
allow  each  party  hereto  to  carry  out  their   respective   obligations  as
contemplated herein, without the prior written approval of the other Party. Data
and information  which shall be deemed to belong to IMMU will be its proprietary
information and data relating to the Product, the identity of Product customers,
prescribing  physician data and the identity of payor coverage and reimbursement
policy data related to Product.  Data and  information  which shall be deemed to
belong to BBSC shall be the data and information related to services offered and
sold by BBSC and all data and  information  relating to any of BBSC's  customers
and their respective profiles.

         13.      Confidentiality

                  13.1  Each  Party  acknowledges  that  as  a  result  of  this
Agreement,  that each Party shall learn  Confidential  Information  of the other
Party. Each party shall treat  Confidential  Information  furnished by the other
party as if it were its own  proprietary  information,  and neither  Party shall
disclose  any  Confidential  Information  of the  other  Party to any  person or
entity,  or use, or permit any person or entity to use, any of such Confidential
Information,  excepting only: (a) disclosures on a confidential basis to and use
by the  directors,  officers,  employees,  and  agents  of  that  Party,  or its
affiliates,  who have a reasonable  need to know such  information in connection
with  that  Party's  performance  of this  Agreement  and who agree to keep such
information  confidential,  and (b)  disclosures  which are  required by law, or
legal process,  as reasonably  determined by that Party or its legal counsel, or
are made on a confidential  basis to that Party's  attorneys,  accountants,  and
other  professional  advisors  in  connection  with  matters  relating  to  this
Agreement.  The specific  material terms of this Agreement shall be deemed to be
Confidential Information of each Party.

                  13.2 The obligation of confidentiality hereunder shall survive
the termination of this Agreement for a period of five (5) years.





                                      -12-





                  13.3  Disclosure  Required  by Law.  In the event that IMMU or
BBSC  shall  be  required  to  make  disclosure  of  the  other's   Confidential
Information  as a result of the  issuance of a court  order or other  government
process,  the party subject to such requirement  promptly,  but in no event more
than  forty-eight  (48)  hours  after  learning  of such  court  order  or other
government process,  shall notify, by personal delivery,  mail, express delivery
service, or facsimile, all pursuant to Section 16.0 hereof, the other party and,
at the other party's expense,  the party subject to such requirements shall: (a)
take all  reasonably  necessary  steps  requested  by the other  party to defend
against the enforcement of such court order or other government process, and (b)
permit the other party to intervene and  participate  with counsel of its choice
in any proceeding relating to the enforcement thereof.

                  13.4 Advertising and Publicity. Except for such disclosures as
are  deemed  necessary  in  IMMU's  or  BBSC's,  as the case may be,  reasonable
judgment  to comply  with  applicable  law (such as, by way of  example  but not
limitation,  the securities  laws of the United  States),  each of IMMU and BBSC
agrees that  neither it nor anyone  acting on its behalf will make any  publicly
disseminated oral or written disclosure  relating to or referring to, or use any
advertising or publicity  which relates or makes  reference to, the other party,
this Agreement or the terms hereof, without in each case the other party's prior
approval  (which approval will not be  unreasonably  withheld or delayed);  each
party agrees to respond promptly to a disclosure  request,  but in any event not
later than five (5) business days from receipt of such a request.

                  13.5 Upon  termination of this Agreement (for any reason) each
Party shall promptly: (i) return to the other Party or destroy all documentation
and  other  materials  (including  copies  of  original  documentation  or other
materials)  containing any Confidential  Information of the other Party; or (ii)
certify to the other  Party,  pursuant to a  certificate  in form and  substance
reasonably  satisfactory  to the other Party,  as to the destruction of all such
documentation and other materials.

         14.      Indemnification

                  14.1 Each Party shall indemnify,  defend and hold harmless the
other and their  respective  Related  Parties as defined in  Appendix A attached
hereto and by this reference  incorporated  herein, from and against all claims,
liabilities,  losses,  damages, costs and expenses (including without limitation
reasonable  attorneys'  fees) arising  directly or indirectly  out of any act or
omission of that Party or any failure of that Party to perform and observe fully
all  obligations  and  conditions  to be  performed  or  observed  by that Party
pursuant to this  Agreement or any breach of any warranty  made by that Party in
this Agreement.  Further, IMMU does hereby protect,  indemnify and hold harmless
BBSC and its related parties from and against all claims,  liabilities,  losses,
damages, costs and expenses (including without limitation, reasonable attorneys'
fees and expenses)  imposed upon or incurred by or asserted against BBSC related
to or arising from (1 ) any claim of patent or copyright infringement




                                      -13-





relating to the subject matter of this Agreement,  and (2) any loss of or damage
to property,  accident,  injury to or death of a person or persons  occurring or
arising  from  the  use,  demonstration,   consumption,   ingestion,  digestion,
manufacture,  production and assembly,  of the Product and its transportation to
BBSC,  excepting only for claims arising out of the act,  negligence or omission
of BBSC or its Related  Parties.  Further,  BBSC does  hereby  agree to protect,
indemnify and hold  harmless  IMMU and its Related  Parties from and against all
claims,  liabilities,  losses,  damages,  costs and expenses  (including without
limitation,  attorneys'  fees  and  expenses)  imposed  upon or  incurred  by or
asserted  against  IMMU  related  to or  arising  from any loss of or  damage to
property,  accident,  injury to or death of a person  or  persons  occurring  or
arising  from  the  negligence  of BBSC  (or  its  Related  Parties),  excepting
herefrom,  any act,  negligence  or  omission  of IMMU or its  Related  Parties.
NOTWITHSTANDING  THE FOREGOING OR ANY OTHER PROVISION TO THE CONTRARY  CONTAINED
IN THIS  AGREEMENT,  NEITHER  PARTY  SHALL BE LIABLE TO THE OTHER  PARTY FOR ANY
CONSEQUENTIAL,  INCIDENTAL,  INDIRECT, SPECIAL, OR OTHER SIMILAR DAMAGES ARISING
OUT OF OR IN CONNECTION  WITH A BREACH OF THIS AGREEMENT OR, EXCEPT AS SET FORTH
IN SECTION 7, ANY EXPENSES,  CHARGES, COSTS OR LIABILITIES,  WHETHER FORESEEN OR
UNFORESEEN, ARISING FROM OR RELATED TO THE ACT OF TERMINATING THIS AGREEMENT.

                  14.2 Each  party  shall  give the other  prompt  notice of any
potential claim for indemnification  hereunder,  and promptly after receipt by a
party  claiming  indemnification  under  this  Section  14.2  of  notice  of the
commencement of any action,  such indemnified party will notify the indemnifying
party of the commencement of the action and generally summarize such action. The
indemnifying  party  shall  have the right to  participate  in and to assume the
defense of such action with counsel of its choosing. An indemnifying party shall
not have the right to direct  the  defense  in such an action of an  indemnified
party if counsel to such indemnified  party has reasonably  concluded that there
may be defenses  available to it that are different  from or additional to those
available to the indemnifying party; provided,  however, that in such event, the
indemnifying  party  shall bear the  reasonable  fees and  expenses  of separate
counsel reasonably satisfactory to the indemnifying party. The failure to notify
an  indemnifying  party  promptly of the  commencement  of any such  action,  if
prejudicial   to  the  ability  to  defend  such  action,   shall  relieve  such
indemnifying  party of any liability to the indemnified party under this Section
14.2.  No  settlement  of any claim or action may be made without the consent of
the indemnifying party (which shall not be unreasonably withheld or delayed).

         15.      Insurance

                  During the term of this Agreement,  IMMU will maintain product
liability and commercial general liability  insurance having a limit of not less
than [*],  pursuant to one or more insurance  policies with reputable  insurance
carriers. IMMU shall




                                      -14-





designate  BBSC  as  an  "additional   insured"  under  all  insurance  policies
referenced in this paragraph.  As a condition  precedent to the effectiveness of
this Agreement,  IMMU shall execute the Guarantee in the form attached hereto as
Schedule "B".

                  BBSC  shall  provide  IMMU  with a  certificate  of  insurance
showing  that BBSC is a named  insured  covered by the  commercial  and  general
liability policies of its parent company Bergen Brunswig Corporation.

         16.      Notices

                  Any notice or other  communication  required  or desired to be
given to any Party under this Agreement  shall be in writing and shall be deemed
duly made when:  (a)  delivered  personally,  (b) deposited in the United States
mail,  first-class  postage prepaid,  and addressed to that Party at the address
for such  Party  set forth at the end of this  Agreement;  (c)  delivered  to an
express delivery service for delivery to that Party at that address; or (d) sent
by facsimile transmission,  with electronic  confirmation,  to that Party at its
facsimile  numbers  set  forth  at the  end of this  Agreement.  Any  notice  or
communication  shall  be  deemed  given  and  received  on  the  date  delivered
personally,  three business days after mailing,  one business day after delivery
to  an  express  delivery  service  and  upon  electronic   confirmation  during
recipients  normal  business  hours  (or the  next  business  day,  if  received
thereafter), if communicated by facsimile transmission. Any Party may change its
address or facsimile number for notices under this Agreement by giving the other
Party notice of such change.

         17.      Remedies

                  With  respect  to  the   provisions  of  Section  13  of  this
Agreement,  each Party  acknowledges  that in the event of any violation by that
Party of any of the provisions of Section 13 of this Agreement,  the other Party
may  suffer  irreparable  harm  and  its  remedies  at law  may  be  inadequate.
Accordingly,  in the event of any  violation or attempted  violation of any such
provisions of Section 13 by either  Party,  the other Party shall be entitled to
petition for a temporary restraining order, temporary and permanent injunctions,
specific  performance,  and other equitable  relief.  The rights and remedies of
each Party under this Agreement shall be cumulative and in addition to any other
rights or remedies  available to such Party,  whether under any other agreement,
at law, or in equity.

         18.      Governing Law and Attorneys Fees

                  All  questions  concerning  the  validity  or  meaning of this
Agreement or relating to the rights and  obligations of the Parties with respect
to performance  under this  Agreement  shall be construed and resolved under the
laws of the State of New York excluding the body of law relating to conflicts of
laws. In the event that either




                                      -15-





party takes legal action to enforce its rights or remedies under this Agreement,
the  prevailing  party  shall be  entitled  to recover  its costs and  expenses,
including reasonable attorneys' fees, incurred in such action.

                  19.      Severability

                           The intention of  the Parties is to comply fully with
all laws and public policies, and this Agreement shall be construed consistently
with all laws and public policies to the extent  possible.  If and to the extent
that any court of competent  jurisdiction  determines  that  it is impossible to
construe any provision  of this  Agreement  consistently  with any law or public
policy and consequently holds that  provision to be invalid,  such holding shall
in no way affect the validity of the other provisions of this  Agreement,  which
shall remain in full force and effect.

                  20.      Tax Provision

                           Each  party  shall bear  all taxes imposed on it as a
result of the performance by such party under this Agreement including,  but not
limited to, any  sales  tax  and  tax on or  measured  by any  payment  required
to be made hereunder, any registration tax,  or  any tax imposed with respect to
the granting of other rights hereunder.   The parties shall cooperate fully with
each other in obtaining and filing all requisite certificates and documents with
the  appropriate  authorities  and  shall  take  such  further  action as may be
reasonably necessary to avoid the deduction of any withholding  or similar taxes
from any remittance of funds by one party to the other hereunder.

                  21.      Non-Waiver

                           No failure  by  either Party to  insist  upon  strict
compliance with any
term of this Agreement, to exercise any option, to enforce any right, or to seek
any remedy upon any default of the other Party shall  affect,  or  constitute  a
waiver of, the first Party's right to insist upon strict compliance, to exercise
that option,  to enforce that right, or to seek that remedy with respect to that
default or any  prior,  contemporaneous,  or  subsequent  default.  No custom or
practice of the Parties at variance with any provision of this  Agreement  shall
affect,  or  constitute  a  waiver  of,  that  Party's  right to  demand  strict
compliance with all provisions of this Agreement.

                  22.      Force Majeure

                           If  the  performance of any part of this Agreement by
either Party shall be affected for any length of time by fire or other casualty,
government restrictions,  war,  riots,  strikes  or  labor  disputes,  lock out,
transportation delays,  electronic disruptions,  telecommunication failures, and
acts of God, or any other causes which are beyond  the  control  of the  Parties
(financial inability excepted), such




                                      -16-





Party  shall not be  responsible  for delay or  failure of  performance  of this
Agreement for such length of time, provided, however, that the obligation of one
Party  to pay  amounts  due to any  other  Party  shall  not be  subject  to the
provisions of this  Section.  Each party shall use its  commercially  reasonable
efforts to minimize the impact on the other of any force majeure event specified
in this Section.

                  23.      Captions

                           The  captions  of   the   various  sections  of  this
Agreement are not part of  the context of this Agreement, and are only labels to
assist  in  locating  those  sections,  and  shall be ignored in construing this
Agreement.

                  24.      Complete Agreement

                           This Agreement contains  the entire agreement between
the  Parties   and   supersedes  all   prior  or  contemporaneous   discussions,
negotiations, representations, warranties, or agreements relating to the subject
matter  of  this  Agreement.   No  changes to this Agreement shall be made or be
binding on either Party unless made in writing  and signed by both Parties.  All
schedules, Exhibits,  Appendixes  referred to in this Agreement are incorporated
herein and made a part hereof as fully as if set forth herein.

                  25.      Successors

                           Except as set  forth  in this Section,  neither Party
shall have the right to assign this  Agreement or any of such Party's  rights or
obligations under this Agreement without  the prior written consent of the other
Party,  which  consent  shall  not  be  unreasonably  withheld.  After providing
written notice to IMMU,  BBSC may assign this Agreement to a party that succeeds
to  all  or  substantially  all  of  BBSC's  business or assets relating to this
Agreement whether by sale, merger, operation of law or otherwise.

                  26.      Approvals

                           When  this  Agreement requires the approval of one or
both of the parties to this Agreement, each and every such approval sought  will
not be unreasonably withheld by the party required to provide its approval.

                  27.      Relationship of the Parties

                           The relationship of the  Parties is and shall be that
of  independent  contractors.   This  Agreement  does  not establish or create a
partnership or joint venture among the Parties.





                                      -17-





                  28.      Interpretation

                           The  parties  have  jointly negotiated this Agreement
and, thus, neither this Agreement nor any provision hereof shall be  interpreted
for or against any party on the basis the party or the party's attorney  drafted
the Agreement or the provision at issue.

This  Agreement  shall  be  binding  upon,  inure  to  the  benefit  of,  and be
enforceable by and against the respective successors and assigns of the Parties.

IMMUNOMEDICS, INC.                           BERGEN BRUNSWIG SPECIALTY
                                     COMPANY

By:  s/ David M. Goldenberg                  By:  s/ Randall A. Perry

Name:   David M. Goldenberg                  Name:   Randall A. Perry

Title:  Chairman and                         Title:  Vice President, Operations
          Chief Executive Officer

Address and facsimile number:                Address and facsimile number:

300 American Road                           4006 Beltline Road
Morris Plains, New Jersey 07950             Suite 200
Attn:  David M. Goldenberg, M.D.            Addison, Texas 75244
         Chairman and CEO                   Attn:  Randall A. Perry
Facsimile:  (973) 605-8282                            Vice President, Operations
                                                      Facsimile:  (888) 333-1529






                                      -18-





                                   APPENDIX A


As used in this Agreement,

"Act" means the Federal  Food,  Drug and Cosmetic  Act,  Title 21, United States
Code, as amended, and the regulations thereunder.

"BLA" means Biological License Application as defined in and contemplated by the
Act.

"Confidential   Information"   shall  mean  information,   and  data  considered
confidential by the party owning such  information,  whether visual,  oral or in
written form,  but does not include (1 ) information  which is or becomes public
without the fault or participation of the other party to this Agreement or which
is responsive to legal process or obligation,  (2) any  information  lawfully in
the receiving party's  possession prior to the date the receiving party receives
the disclosing  party's  information,  or (3) any information which either party
receives  from a  third  party  who  rightfully  possesses  and  discloses  such
information.

"Governmental Authority" shall mean any nation or government, any state or other
political subdivision thereof, or any entity exercising executive,  legislative,
judicial, regulatory or administrative functions of or pertaining to government.

"Person"  or  "Persons"  means any  corporation,  natural  person,  firm,  joint
venture,  partnership,  trust,  unincorporated  organization,  government or any
department or agency of any government.

"Related  Parties"  mean  the  successors,  subsidiaries,  parent  corporations,
affiliates, Directors, employees, agents, representatives,  related entities and
assigns of any Person.

"Requirement(s) of Law" means any law (including,  without limitation,  consumer
law),  treaty,  rule or  regulation or a final and binding  determination  of an
arbitrator or a determination  of a court or other  Governmental  Authority,  in
each case applicable to or binding upon such Person or any of its property or to
which such Person or any of its property is subject.




                                      -19-





                                   SCHEDULE A

                                  Fee Schedule

IMMU will sell CEA-Scan to BBSC at [*] Per vial. Terms
of payment shall be net [*] days.  If during the first
[*] days of  sales of  Product by BBSC  hereunder, the
average  price of  vials  sold by BBSC is not at least
[*], IMMU will pay BBSC an amount equal to [*].

If  IMMU's  selling  price  to BBSC shall be increased
pursuant to Section  5.1.1, and the  average  price of
Vials sold by  BBSC during the first [*] days of sales
by BBSC at the increased  price is not at least [*] in
excess  of  BBSC's increased purchase price from IMMU,
IMMU will pay BBSC an amount equal to [*].

Consignment/Distribution Fee for National Accounts                           [*]

BBSC  will  store up  to [*]  pallets of  refrigerated
product per month  without charge.  BBSC will assess a
monthly  storage  charge  of  [*]  each for additional
pallets held for IMMU sale to National Accounts.

Customer reporting/software design                                           [*]

Customer  management  report  setup  specific software
design   requirements  for  customer  beyond  specific
reports)                                                                     [*]

Travel on immunomedics' request                                              [*]

                  Additional Costs                                  Fee Schedule

Freight and Courier charges (Discounted Rate)                                [*]

Telecommunication, facsimile, Fed Ex/UPS and postage                         [*]
expenses




                                      -20-





                                   SCHEDULE B

                CONTINUING GUARANTY AND INDEMNIFICATION AGREEMENT




The undersigned does hereby guarantee to Alternate Site Distributors, its parent
Bergen Brunswig  Corporation  ("BBC") and each of BBC's subsidiary  corporations
(together the "Group") that each shipment or other delivery of any food,  drugs,
devices,   cosmetics,  or  other  merchandise  now  or  hereafter  made  by  the
undersigned,  its subsidiaries,  divisions or affiliated  companies to or on the
order of any  member of the Group will not be, at the time of such  shipment  or
delivery, adulterated, misbranded, or otherwise prohibited within the meaning of
the Federal Food,  Drug and Cosmetic Act, 21 U.S.C.A.  #301 et seq., as amended,
and in effect at the time of said  shipment or delivery  (the Act) or within the
meaning of any  applicable  state or municipal  law in which the  definition  of
adulteration or misbranding are substantially the same as those contained in the
Act;  and such  merchandise  is not, at the time of such  shipment or  delivery,
merchandise  which may not be  introduced  or delivered  for  introduction  into
interstate  commerce  under the  provisions of section 404 or 405 of the Act (21
U.S.C.A.  #344 and  #355);  and such  merchandise  is  merchandise  which may be
legally  transported  or sold  under  the  provisions  of any  other  applicable
federal,  state or municipal law; and the  undersigned  guarantees  further that
only  those  chemicals  or  sprays  approved  by  federal,  state  or  municipal
authorities  have been used,  and any residue in excess of the amount allowed by
any such authorities has been removed therefrom.

The undersigned  hereby agrees to defend,  indemnify and hold the Group harmless
against any and all claims,  losses,  damages,  and liabilities  whatsoever (and
expenses connected  therewith,  including reasonable counsel fees), arising as a
result of (a) any actual or asserted  violation of the Act or any other federal,
state or local law or regulation by virtue of which products sold, supplied,  or
delivered by the  undersigned  shall be alleged or determined to be adulterated,
misbranded,  mislabeled  or otherwise not in full  compliance  with any federal,
state or local law or regulation,  and (b) the  possession,  distribution,  sale
and/or  use  of,  or by  reason  of the  seizure  of,  any of the  undersigned's
products,  including any prosecution or action whatsoever by any government body
or agency or (subject  to Section 14 of the  Distributor  and  Product  Services
Agreement  between us) by any private party,  including claims of bodily injury,
death or property damage. The undersigned further agrees to maintain primary and
noncontributing  Products  Liability  Insurance  of not less  than [*]  Combined
Single Limit (Bodily  Injury and Property  Damage)  including each member of the
Group as  Additional  Insured as  respects  Broad Form  Vendors  Coverage,  with
provision for at least 30 days prior written notice to the Additional Insured in
the event of  cancellation or material  reduction of coverage,  and upon request
promptly submit satisfactory evidence of such insurance. The provisions




                                      -21-




set forth  herein are in addition to, and not in lieu of, any terms set forth in
any purchase orders accepted by the undersigned.



IMMUNOMEDICS, INC.       s/ David M. Goldenberg                   March 13, 1998
- ---------------------    -------------------------------------------------------
Guarantor(Name)          Signature of Authorized Officer                 Date

                                              Chairman and
                         David M. Goldenberg, Chief Executive Officer
                         Name and Title

                         300 American Road, Morris Plains, NJ 07950
                         Address of Company

                         (973) 605-8200
                         Phone





                                      -22-