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1                                                                  EXHIBIT 10.29

   INTERNATIONAL SALES AND MARKETING CONTRACT AND COLLABORATION WITH THE CEO
    BETWEEN CELL ROBOTICS, INC .("CRI") AND OTON TISCH (AND/OR TKV)("OTON")

1)       CRI will contract with TKV, Caracas, Venezuela the availability of MR.
         OTON TISCH ("OTON", Caracas, Venezuela to perform during 2 years the
         task of ACTING INTERNATIONAL SALE AND MARKETING MANAGER for the LASETTE
         and its accessories and if available, the EAR DRUM PERFORATOR, for the
         following areas and countries (the "TERRITORY"):

         -        The Far East, exclusive the ex-Soviet Union, meaning the
                  countries from east of PAKISTAN to INDONESIA,

         -        The main countries involved will be CHINA (incl, HONG KONG and
                  MACAO),

         -        TAIWAN, JAPAN, KOREA, INDIA, SRI LANKA, BANGLA DESH, THAILAND,
                  VIETNAM, LAOS, CAMBODIA, MALAYSIA, SINGAPORE, BRUNEI,
                  PHILIPPINES AND INDONESIA.

         -        Latin America, Central America, Mexico and Caribbean (If there
                  is a large US AID program of support for Central America
                  and/or the Caribbean then CRII will assume this territory)

         -        Europe (inclusive the Baltic States, exclusive the rest of the
                  ex-Soviet Union)

         -        (If later it is determined that Israel is not served by the
                  America/Middle East Medical Company, it will be defined as
                  part of the OTON territory)

2)       Assisting OTON will be the necessary persons as agreed, but at least:

         -        1 Assistant International Sales Manager Mr. DAVE COSTELLO, for
                  now on a part time basis, who will be involved in all OTON
                  actions.

         -        Ms. IRENE HO on a majority time basis. If the business in the
                  countries not included in the present agreement takes off, an
                  additional assistant would be necessary, to cover these
                  regions To reduce the fixed cost, additional personnel (and
                  eventually the existing) shall be compensated partially, if
                  possible, with percentages on the sales.

3)       The compensation of OTON will be as follows:

         -        5% of the net value of the exports to the TERRITORY for the
                  first $ 1,000,000 /y. sold, 3,5% for the second $ 1,000,000/y.
                  2,5% for the third $ 1,000,000 /y. and 2% for the balance.

         -        The proceeds will be paid by quarterly installments prorate
                  customers payment, unless the sales are in the non-cap
                  modality, in which case the payment will be basing on the
                  amounts and time frame of the correspondent disposables
                  delivery

         -        The fees shall be paid for all orders received within the
                  contract validity, even if the payment is received after
                  expiration.

         -        As long as CRI prefers, but not more than for 8 months, the
                  compensation can be paid as a increase of the amount due
                  within the scope of the $ 500,000 convertible loan agreement
                  OTON / CRI.

4)       The travel cost will be reimbursed, the flight booked in (best price
         with reasonable schedule) Business Class for the long hauls and the
         Hotels up to the category Hilton or Intercontinental. No separate meal
         cost will be reimbursed, unless they include business relation
         invitations.

         The travel costs occurred before Dec. 2001 can by paid, at CRI's
         selection, the same way as indicated at the end of 3).

5)       The activities of OTON will be coordinated with the CEO and/or COO

6)       The activities of OTON will follow tentatively with developed
         priorities and subject to adjustments, the following guidelines:

         -        OTON will examine the existing international distributor
                  agreements both signed and oral and change or continue these
                  agreements.

         -        OTON will identify and select additional distributors in
                  countries where agreement do not exist.

         -        OTON will examine and define the regulatory requirements for
                  the countries and David will assist the distributor in
                  submitting the required documents.

         -        OTON will continue to work with China Arts to try to assure
                  that the letter of intent to purchase additional Lasettes and
                  the execution of OPTIONS happens and will also work on selling
                  the older Professional Lasettes

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2

         -        As established in the CAC agreement, OTON will discuss with
                  them the eventual definitive extension of the provisional
                  existing distribution for VIETNAM, LAOS, CAMBODIA and
                  THAILAND, as well as the further extension of the agreement to
                  MALAYSIA,INDONESIA, BRUNEI and possibly also SINGAPORE and
                  PHILIPPINES. The principal criteria for this extensions will
                  be the capability of the CAC associates in said countries to
                  perform and their willingness to place additional firm stock
                  orders.

         -        Cell Robotics will address directly international sales of the
                  Lasette in the Middle East, including Pakistan and Africa.

         -        OTON will develop distributors in Canada, Europe, SOUTH
                  America, Central America, Mexico and the Caribbean as well as
                  Taiwan, Ceylon and India. If there are large US AID programs
                  in any of these countries a change to assign the countries
                  directly to Cell Robotics will be considered.

7)       Pricing will be done to try to always maintain at least a gross margin
         of 30% after the discount to distributors and commissions to OTON.

         -        Every attempt will be made to lower the cost of the production
                  of the Lasette and accessories within budget constraints,
                  especially making use of the component and mold procuring at
                  low cost but high quality countries as TAIWAN and consumables
                  in China

8)       New redesigned versions of the Lasette will be developed within budget
         constraints and the need for R&D with other product lines. These
         redesign targets will be to reduce size and price and to add a glucose
         meter.

9)       OTON will also support the international Workstation marketing and
         sales in coordination with DAVID COSTELLO. CRII will provide the
         following commitment:

         -        Every effort is and will be made, with special attention to
                  the short term, to close as many sales as possible.

         -        Every creditable lead will be followed up.

         -        Whenever possible CRII will request up-front payment and/or
                  Letter of Credit, and although it will not let this prevent a
                  sale, such should be a duly supported exception .

         -        CRII continues to work with distributors regarding early
                  payment, but most are not willing to commit their capital in
                  advance. They do not do that for other companies.

         -        Pricing policies will be periodically reviewed.

10)      This Workstation activity will not be separately compensated, unless
         there is a direct involvement in concrete issues, such as is presently
         the case in China and Taiwan, in which case the compensation will be 3%
         of the sale value.

11)      The activities of OTON for the Workstation will be coordinated with the
         CEO or COO


12)      Additionally to the Export Managing activity, OTON will act as adviser
         of the CEO in marketing activities generally (and any other issue, if
         so agreed). No compensation is foreseen for such activity

13)      The agreement is retroactively valid from AUGUST 1, 2001 UNTIL AUGUST 1
         2003. If other business interest or other acts keep OTON from providing
         the time needed for this task the contract can be modified or
         discontinued.


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<S>                                 <C>                            <C>
We agree,                                                                       We agree

CELL ROBOTIC, INC.                   Seen without objection        C.A. DE OBRAS ELECTROMECANICAS TKV


/S/ RONALD K. LOHRDING, PH.D.          /S/ OTON TISCH                   /S/ DOUGLAS MAJETIC
PRESIDENT AND CEO                                                     EXECUTIVE VICE-PRESIDENT
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