Document:

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                                                                    EXHIBIT 10.7

                            SHARED SERVICES AGREEMENT
                            -------------------------

     THIS SHARED SERVICES AGREEMENT (the "Agreement"), dated March 14, 2001 (the
"Effective Date"), is entered into by and between IVAX Corporation, a Florida
corporation ("IVAX"), and IVAX DIAGNOSTICS, INC., formerly known as
B2BSTORES.COM INC., a Delaware corporation ("Company").

                                    RECITALS
                                    --------

     WHEREAS, IVAX and Company entered into a Merger Agreement dated November
21, 2000, whereby IVAX Diagnostics, Inc. ("Diagnostics"), a Florida corporation
and wholly owned subsidiary of IVAX, merged with and into Company (the "Merger")
and Company became the surviving corporation following the Merger; and

     WHEREAS Company desires IVAX to provide certain administrative and other
services previously provided by IVAX to Diagnostics prior to the Merger until
such time as Company is able to provide such services on its own or through
another third party;

                                    AGREEMENT
                                    ---------

     NOW, THEREFORE, IN CONSIDERATION of the mutual promises, covenants and
agreements set forth in this Agreement, the parties agree as follows:

     1. Furnishing of Services. Commencing on the Effective Date and continuing
        ----------------------
through the term of this Agreement, IVAX agrees to furnish to Company the
administrative and other services identified in, and in accordance with, Exhibit
A attached hereto and made a part hereof (the "Services"), which may be amended
from time to time.

     2. Fees for Services.
        -----------------

          2.1 For the Services, Company agrees to pay IVAX IVAX' actual costs
plus 15%.

          2.2 IVAX shall bill Company monthly for Services rendered. Such
invoice shall contain a description of the Services rendered and the charges
therefor. Company shall pay such invoices within thirty (30) days of the date of
the invoice.

     3. Term. Unless earlier terminated, this Agreement shall begin on the
        ----
Closing Date and end ninety days after the Closing Date, unless such term is
extended by the mutual written agreement of the parties.

     4. IVAX' Duties in Connection with the Services. IVAX shall use reasonable
        --------------------------------------------
efforts to render the Services as and when Company shall request, based upon
mutually agreed upon schedules and in a manner consistent with IVAX' past
practices in providing such Services to Diagnostics prior to the Merger. IVAX
shall use commercially reasonable efforts to provide the Services in a timely
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and effective fashion. Notwithstanding the foregoing sentence, both parties
acknowledge that IVAX may be required to furnish services similar to the
Services to itself and its affiliates. IVAX reserves the right, upon 30 days
prior written notice, to modify any of the Services furnished hereunder, to the
extent it is modifying such Services on an organization-wide basis.

     5. Disclaimer. IVAX may rely in all respects upon data furnished by Company
        ----------
in rendering the Services hereunder. IVAX makes no warranties, express or
implied, by operation of law or otherwise, with respect to the Services
furnished under this Agreement. IVAX shall not be liable for damages or
otherwise with respect to the furnishing of the Services and Company hereby
releases IVAX from any and all claims that it may have with respect to the
furnishing of the Services, except for gross negligence or willful misconduct.
Notwithstanding the foregoing, Company shall not be required to pay IVAX for
Services not furnished or incorrectly furnished by reason of error. In no event
shall IVAX be liable for consequential, incidental, specific or punitive
damages, including, without limitation, loss of profits or goodwill, capital,
downtime expenses or claims of customers. Company further agrees that in making
any claim against IVAX in respect of any aspect of the provision of the Services
pursuant to this Agreement, it shall not institute suit against any employee of
IVAX past or present, and shall be limited solely to claims against and shall
have recourse only to IVAX.

     6. Termination of Agreement. This Agreement may be terminated as follows:
        ------------------------

          (i) by either party upon sixty days' prior written notice to the other
party;

          (ii) by IVAX upon written notice to Company if Company shall have
failed to pay any amounts due hereunder within ten (10) business days after
receipt of written notice of its failure to pay such amounts when due; and

          (iii) at any time by the mutual agreement of the parties.

     7. Miscellaneous.
        -------------

          7.1 This Agreement shall not be assigned by either party without the
prior written consent of the other party, which consent shall not be
unreasonably withheld, except that no such consent shall be required for a party
to assign this Agreement to an affiliate or a purchaser of all or substantially
all of the assets of such party by providing written notice to the other party.

          7.2 This Agreement shall be governed by and construed in accordance
with the laws of Florida without regard to its principles of conflicts of laws.

          7.3 This Agreement contains the entire understanding of the parties
with respect to the subject matter hereof. Except as is otherwise expressly
provided for herein, no supplement, modification or amendment of the Agreement
shall be binding unless in writing and executed by IVAX and Company.

                                       -2-
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          7.4 This Agreement shall be signed in any number of counterparts, each
of which for all purposes shall be deemed to be an original, and all of which
together shall constitute the same agreement.

          7.5 The headings of the sections of this Agreement are inserted as a
matter of convenience and for reference purposes only, are of no binding effect,
and in no respect define, limit or describe the scope of this Agreement or the
intent of any section hereof.

          7.6 Nothing in this Agreement, express or implied, is intended or
shall be construed to confer upon or give to any person, firm or corporation
other than the parties hereto any remedy or claim under or by reason of this
Agreement or any term, covenant or condition hereof, all of which shall be for
the sole and exclusive benefit of the parties hereto.

          7.7 All notices, demands, requests and other communications required
or permitted to be given hereunder shall be deemed duly given on the date
delivered by hand, mailed by registered or certified mail, postage prepaid or
sent by overnight courier or facsimile:

          If to IVAX:

          4400 Biscayne Boulevard
          Miami,Florida 33137
          Attention:General Counsel
          Facsimile:(305)575-6049

          and if to Company:

          2140 North Miami Avenue
          Miami, Florida 33137
          Attention: President and Chief Executive Officer
          Facsimile:(305)324-2395

     THE REMAINDER OF THIS PAGE LEFT INTENTIONALLY BLANK

                                       -3-
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     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.

                           IVAX CORPORATION

                           By:/s/ Carol J. Gillespie
                              -------------------------------------------------
                               Name: CAROL J. GILLESPIE
                                     ----------------------
                               Title: SENIOR VICE PRESIDENT
                                      ---------------------

                           IVAX DIAGNOSTICS, INC., F/N/A B2BSTORES.COM INC.

                           By:/s/Giorgio D'urso
                              -------------------------------------------------
                               Name:GIORGIO D'URSO
                                    -----------------------
                               Title:PRESIDENT & CEO
                                     ----------------------

                   SIGNATURE PAGE TO SHARED SERVICES AGREEMENT

                                       -4-
<PAGE>

                                    EXHIBIT A

                         SERVICES TO BE PROVIDED BY IVAX

Payroll, including printing paychecks and making associated tax filings;

Treasury, including providing cash management services, including disbursements,
receipts, banking and investing;

Insurance, including providing and administrating insurance policies;

Legal;

Human resources, including providing and administrating employee benefits and
plans through the following dates:

     medical, dental, flex and life through the end of the month in which the
merger is completed,and

     medical, dental, flex continued by Diagnostics' employees under COBRA
through the end of the COBRA period;

Financial reporting, including providing consolidated reports and public
reporting;

Income taxes;

Information systems, including providing network and website hosting, phone and
data systems, software licenses and information systems support.

                                      -5-<PAGE>

                                                                    EXHIBIT 10.8

                              EMPLOYMENT AGREEMENT

     This Employment Agreement (the "Agreement"), dated as of October 1, 1998
                                     ---------
(the "Effective Date"), is entered into between IVAX Diagnostics, Inc. (the
      --------------
"Company") and Giorgio D'Urso (the "Executive").
 -------                            ---------

                                     Recital
                                     -------

     The Board of Directors of the Company desires to employ the Executive and
to assure the Executive's continued employment by the Company on the terms and
conditions of this Agreement, and the Executive desires to be employed by the
Company on the terms and conditions of this Agreement.

                                    Agreement
                                    ---------

     In consideration of the Recital and of the mutual promises set forth in
this Agreement, the Company and the Executive agree as set forth below.

     1.   Employment.
          ----------

     (a) Employment and Term. The Company agrees to employ the Executive and the
Executive agrees to be employed by the Company, on the terms and conditions of
this Agreement, for a period (the "Term") commencing on the Effective Date and
                                   ----
expiring on the fifth anniversary of the Effective Date.

     (b) Duties. The Executive shall serve as Chairman of the Board, Chief
Executive Officer and President of the Company and shall have such powers and
authority as may be given to him from time to time by the Board of Directors of
the Company or a committee thereof (the "Board of Directors"). The Executive
                                         ------------------
shall report to and be subject to the supervision and direction of the Board of
Directors. The Executive shall devote his full business time and energies to the
business and affairs of the Company and shall use his best efforts, skills and
abilities to promote the interests of the Company and to diligently and
competently perform the duties of his position. The Executive shall have the
right to (i) serve on civic, charitable or corporate boards, (ii) deliver
lectures, fulfill speaking engagements, or teach at educational institutions,
and (iii) manage personal investments; provided that such activities do not
unreasonably interfere with the Executive's duties to the Company under this
Agreement.

     (c) Place of Performance. The Executive will perform his duties from the
Company's principal place of business, which is currently located in Miami,
Florida, except for travel reasonably necessary in connection with the Company's
business.
<PAGE>

     2.   Compensation.
          ------------

     (a) Base Salary. The Executive will be paid a base salary at the annual
rate of not less than $348,519 (the "Base Salary"). The Base Salary shall be
                                     -----------
paid in installments consistent with the Company's normal payroll policies. The
Company shall review the Base Salary annually for merit increases, which shall
be made subject to and at the discretion of the Board of Directors.

     (b) Bonus. The Executive shall be entitled to participate in all bonus
plans, practices, policies and programs, if any, generally made available by the
Company to other key executives of the Company based in the United States.

     (c) Stock Options. The Executive shall be entitled to receive stock options
and such other long term compensation as may be determined by the Board of
Directors from time to time in its discretion. In making any determinations
concerning the award of stock options to the Executive, the Board of Directors
will apply the same criteria as it applies in making awards to the other key
executives of the Company.

     3. Benefits. During the Term, the Executive shall be entitled to the
        --------
benefits described below.

     (a) Expense Reimbursement. Upon submission of appropriate supporting
documentation and in specific accordance with such guidelines as may be
established from time to time by the Company for senior executives, the
Executive shall be reimbursed by the Company for all reasonable business
expenses (including travel and entertainment and including air-fare for his
spouse if a legitimate business reason exists for her to accompany him) actually
and necessarily incurred by the Executive on behalf of the Company in connection
with the performance of his duties under this Agreement.

     (b) Incentive Savings and Retirement Plans. The Executive shall be entitled
to participate in all savings, incentive and retirement plans, practices,
policies and programs, if any, generally made available by the Company to other
key executives of the Company based in the United States.

     (c) Welfare Plans. The Executive shall be entitled to participate in all
welfare benefit plans, practices, policies and programs, if any, generally made
available by the Company to other key executives of the Company based in the
United States.

     (d) Vacation. The Executive shall be entitled to paid vacation in
accordance with the most favorable plans, practices, policies and programs, if
any, generally made available by the Company to other key executives of the
Company based in the United States; provided that the Executive shall be
entitled to at least four weeks paid vacation each year.

                                       2
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     4.   Termination.
          -----------

     (a) Termination Without Cause. Notwithstanding any other provision of this
Agreement, the Board of Directors shall have the right to terminate this
Agreement at any time upon written notice to the Executive; provided that the
Company shall continue to pay to the Executive his then current Base Salary in
installments for the remainder of the Term.

     (b) Termination for Cause. Notwithstanding any other provision of this
Agreement, this Agreement may be terminated by the Company at any time for
Cause. For purposes of this Agreement, the word "Cause" means: (i) an act or
                                                 -----
acts of personal dishonesty taken by the Executive and intended to result in the
direct or indirect personal enrichment of the Executive at the expense of the
Company (except that disputes regarding expense reimbursement shall not be
subject to this clause and shall instead be resolved in good faith by the Board
of Directors and the Executive), (ii) subject to the following sentences,
violation by the Executive of his material obligations or representations under
this Agreement which are demonstrably willful and deliberate and which are not
remedied within 30 days after written notice to the Executive, or (iii) the
conviction of the Executive of any criminal act which is a felony. Upon a
determination by the Company that cause exists under clause (ii) of the
preceding sentence, the Company shall cause a special meeting of the Board of
Directors to be called and held at a time mutually convenient to the Board of
Directors and the Executive, but in no event later than 10 business days after
the Executive's receipt of the notice contemplated in clause (ii). The Executive
shall have the right to appear at such special meeting with legal counsel of his
choosing to refute any determination of Cause specified in such notice, and any
termination of this Agreement by reason of such Cause determination shall not be
effective until the Executive is afforded such opportunity to appear before the
Board of Directors. Any notice of termination for Cause pursuant to clause (i)
or (iii) of the second sentence of this Section shall be made in writing to the
Executive, which notice shall set forth in detail all acts or omissions upon
which the Company is relying for such termination. Upon any termination pursuant
to this Section, the Executive shall be entitled to be paid his Base Salary to
the date of termination and the Company shall have no further liability under
this Agreement to the Executive (other than for reimbursement of business
expenses incurred prior to the termination date, in accordance with Section
3(a)).

     (c) Death. This Agreement shall automatically terminate upon the death of
the Executive. If this Agreement is terminated pursuant to this Section, the
Company shall pay to the Executive's estate his Base Salary through the
termination date.

     (d) Disability. The Company, by written notice to the Executive, shall at
all times have the right to terminate this Agreement if the Executive shall, as
the result of mental or physical incapacity, illness or disability, fail to
perform his duties and responsibilities provided for herein for a period of more
than 180 consecutive days. Upon any termination pursuant to this Section 4(d),
the Executive shall be entitled to be

                                       3
<PAGE>

paid his Base Salary to the date of termination and the Company shall have no
further liability hereunder (other than for reimbursement of business expenses
incurred prior to the termination date, in accordance with Section 3(a)).

     5.   Restrictive Covenants.
          ---------------------

     (a) Nondisclosure. The Executive acknowledges that he has executed the
Company's standard form of Confidentiality Agreement and that such agreement is
in full force and effect.

     (b) Nonsolicitation of Employees. While employed by the Company and for a
period of two years thereafter, Executive shall not directly or indirectly, for
himself or for any other person, firm, corporation, partnership, association or
other entity, attempt to employ or enter into any contractual arrangement with
any employee or former employee of the Company, unless such employee or former
employee has not been employed by the Company for a period in excess of one
year.

     (c) Injunction. It is recognized and hereby acknowledged by the parties
hereto that a breach by the Executive of any of the covenants contained in
Section 5(a) or 5(b) will cause irreparable harm and damage to the Company, the
monetary amount of which may be virtually impossible to ascertain. As a result,
the Executive recognizes and hereby acknowledges that the Company shall be
entitled to an injunction from any court of competent jurisdiction enjoining and
restraining any violation of any or all of the covenants contained in such
Section by the Executive or any of his affiliates, associates, partners or
agents, either directly or indirectly, and that such right to injunction shall
be cumulative and in addition to whatever other remedies the Company may
possess.

     6.   Conflicts with Existing Agreements: Company Policies.
          ----------------------------------------------------

     (a) The Executive represents and warrants that he is not a party to or
bound by any contract which in the future may have a possibility of adversely
affecting the business of the Company or the performance by the Executive of his
duties under this Agreement, including but not limited to contracts related to
previous employment containing confidentiality or noncompete covenants.

     (b) The Executive acknowledges that he will be subject to and required to
abide by the policies and procedures of IVAX Corporation and the Company
applicable to senior executives as in effect from time to time, including
without limitation the IVAX Corporation Code of Conduct, as in effect from time
to time.

                                       4
<PAGE>

     7.   Miscellaneous.
          -------------

     (a) Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Florida, without regard to the conflict
of law principles thereof.

     (b) Notices. Any notice required or permitted to be given under this
Agreement shall be in writing and shall be deemed to have been given when
delivered by hand or when deposited in the United States mail, by registered or
certified mail, return receipt requested, postage prepaid, addressed as follows:

     If to the Company:     IVAX Corporation
                            4400 Biscayne Boulevard
                            Miami, Florida 33137
                            Attention: General Counsel

     If to the Executive:   Giorgio D'Urso

or to such other addresses as either party hereto may from time to time give
notice of to the other in the aforesaid manner.

     (c) Successors.

          (i) This Agreement is personal to the Executive and without the prior
written consent of the Company shall not be assignable by the Executive
otherwise than by will or the laws of descent and distribution.

          (ii) This Agreement shall inure to the benefit of and be enforceable
by the Executive's legal representatives.

          (iii) This Agreement shall inure to the benefit of and be binding upon
the Company and its successors and assigns. The Company will require any
successor (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company to expressly assume and agree to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform it
if no such succession had taken place. As used in this Agreement, "Company"
shall mean the Company as hereinbefore defined and any successor to its business
and/or assets which assumes and agrees to perform this Agreement by operation of
law or otherwise.

     (d) Severability. The invalidity of any one or more of the words, phrases,
sentences, clauses or sections contained in this Agreement shall not affect the

                                       5
<PAGE>

enforceability of the remaining portions of this Agreement or any part thereof,
all of which are inserted conditionally on their being valid in law, and, in the
event that any one or more of the words, phrases, sentences, clauses or sections
contained in this Agreement shall be declared invalid, this Agreement shall be
construed as if such invalid word or words, phrase or phrases, sentence or
sentences, clause or clauses, or section or sections had not been inserted. If
such invalidity is caused by length of time or size of area, or both, the
otherwise invalid provision will be considered to be reduced to a period or area
which would cure such invalidity.

     (e) Waivers. The waiver by either party hereto of a breach or violation of
any term or provision of this Agreement shall not operate nor be construed as a
waiver of any subsequent breach or violation.

     (f) Damages. Nothing contained herein shall be construed to prevent the
Company or the Executive from seeking and recovering from the other damages
sustained by either or both of them as a result of its or his breach of any term
or provision of this Agreement, except that the payment required to be made by
the Company to the Executive pursuant to Section 4 shall be the Executive's
exclusive remedy for any termination of this Agreement pursuant to such section.

     (g) No Third Party Beneficiary. Nothing expressed or implied in this
Agreement is intended, or shall be construed, to confer upon or give any person
(other than the parties hereto and, in the case of Executive, his heirs,
personal representative(s) and/or legal representative) any rights or remedies
under or by reason of this Agreement.

     (h) Miscellaneous. The Company's obligation to make the payments provided
for in this Agreement and otherwise to perform its obligations hereunder shall
not be affected by any set-off, counterclaim, recoupment, defense or other
claim, right or action which the Company may have against the Executive or
others. In no event shall the Executive be obligated to seek other employment or
take any other action by way of mitigation of the amounts payable to the
Executive under any of the provisions of this Agreement. To the extent that the
Executive is successful in any legal proceeding against the Company involving
this Agreement, the Company agrees to pay, to the full extent permitted by law,
all legal fees and expenses which the Executive may reasonably incur in
connection with such proceeding.

     (i) Diminution if Duties. Neither (i) the assignment to the Executive of
any duties inconsistent in any respect with the Executive's position (including
status, offices, titles and reporting requirements), authority, duties or
responsibilities as contemplated by Section 1(b), or any other action by the
Company which results in a diminution in such position, authority, duties or
responsibilities, nor (ii) the Company's requiring the Executive to be based at
any office or location other than in Dade County, Florida shall be deemed to be
a breach of this Agreement by the Company.

                                       6
<PAGE>

     (j) Entire Agreement. This Agreement contains every obligation and
understanding between the parties relating to the subject hereof and merges all
prior discussions, negotiations and agreements, if any, between them, and none
of the parties shall be bound by any conditions, definitions, understandings,
warranties or representations other than as expressly provided or referred to
herein. This Agreement supersedes any prior agreement relating to the subject
hereof between the Executive and the Company or any of its Affiliates.

     IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the
date first above written.

                                                     IVAX DIAGNOSTICS, INC.

                                                       /s/ Thomas E. Beier
                                                     ---------------------------
                                                     Thomas E. Beier
                                                     Vice President

                                                     EXECUTIVE:

                                                       /s/ Giorgio D'Urso
                                                     ---------------------------
                                                     Giorgio D'Urso

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