EXHIBIT 10.10

                                 PROMISSORY NOTE

$28,448.40                                                       Jan.13, 1995

   FOR VALUE RECEIVED, the undersigned, MARQUEST MEDICAL PRODUCTS, INC., (the
"Maker"), hereby promises to pay to the order of FINANCING FOR SCIENCE
INTERNATIONAL, INC. (the "Payee") on demand the principal sum of Twenty-eight
thousand four hundred forty-eight and 40/100 Dollars ($28,448.40).

   This Note shall bear interest from the date funds are paid to vendor
(NeuStar Corp.) on the unpaid principal hereof until the principal amount of
this Note is paid in full to the satisfaction of the holder hereof at the
rate of one and one-half percent (1 1/2%) per month.

   Accrued interest on this Note shall be payable monthly on the last day of
each calendar month and upon demand for the payment of this Note. It is
anticipated that this Note will be paid by a payoff from the equipment lease
(Rental Schedule No. 2)

   If any payment of this Note is not made when due, interest on the unpaid
principal amount of this Note and on all amounts due hereunder shall accrue
at two percent (2%) per month or the highest rate of interest on amounts past
due that is not unlawful, whichever is lower, until paid in full to the
satisfaction of the holder hereof. Additionally, with respect to each
instance of late payment of principal or interest, the Maker shall pay within
three (3) days of the due date hereunder for such late payment, a collection
fee of $500, which fee approximates the administrative costs of the Payee, at
minimum, as a result of the nontimely payment by the Maker.

   Both principal and interest are payable in lawful money of the United
States of America for the account of the holder at 10 Waterside Drive,
Farmington, Connecticut 06032-3065, or at such other address as the holder
hereof may designate, in immediately available funds.

   The Maker hereby waives diligence, presentment, formalities of demand,
protest or notice of nonpayment or  dishonor or any other notice with respect
to this Note.

   The Maker agrees to pay all costs and expenses incurred by the holder in
connection with the collection and enforcement of this Note including,
without limitation, reasonable attorney's fees and expenses.

   This Note shall be deemed made in the State of Connecticut and shall be
governed by and construed in accordance with the internal laws of the State
of Connecticut without regard to the principles of conflict of laws.


                                           MARQUEST MEDICAL PRODUCTS, INC.

                                           By: /s/ M. Von der Schmidt
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marquest:fl5r2




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