STOCK OPTION AGREEMENT

         AGREEMENT,  made  as of  February  2,  2000,  by and  between  PRE-CELL
SOLUTIONS,  INC., a Colorado  corporation  (the  "Company"),  and TOBIN & REYES,
P.A., a Florida professional association ("T&R").

         WHEREAS, on February 2, 2000 (the "Grant Date"), the Board of Directors
authorized the grant to T&R an option (the "Option") to purchase an aggregate of
100,000 shares of the authorized but unissued common stock of the Company,  $.01
par value ("Common Stock"),  conditioned upon T&R's acceptance  thereof upon the
terms and conditions set forth in this Agreement; and

         WHEREAS,  the T&R  desires  to  acquire  the  Option  on the  terms and
conditions set forth in this Agreement;

         IT IS AGREED:

         1. Grant of Stock  Option.  The Company  hereby grants to T&R the right
and option  ("Option")  to purchase  all or any part of an  aggregate of 100,000
shares of Common Stock  ("Option  Shares") on the terms and conditions set forth
herein.  The  Option  represented  hereby is a  non-qualified  stock  option not
intended to qualify  under any section of the Internal  Revenue Code of 1986, as
amended, and is not granted under any plan.

         2. Exercise Price. The exercise price ("Exercise  Price") of the Option
shall be $0.44 per share.

         3.  Exercisability.  This Option is immediately  exercisable  and shall
remain  exercisable  for a period of five years from the date of this  Agreement
(the "Exercise Period").

         4. Adjustments. In the event of any change in the number of outstanding
shares of Common Stock of the Company  occurring as the result of a stock split,
reverse stock split or stock dividend on the Common Stock, after the Grant Date,
the Company  shall  proportionately  adjust the number of Option  Shares and the
Exercise  Price of the Option.  Any right to acquire a  fractional  Option Share
resulting from adjustments will be rounded to the nearest whole Option Share. If
the Company shall be the surviving  corporation  in any merger,  combination  or
consolidation, this Option shall pertain and apply to the Option Shares to which
T&R is entitled hereunder,  without adjustment.  In the event of a change in the
par value of the shares of Common Stock which are subject to this  Option,  this
Option will be deemed to pertain to the shares  resulting  from any such change.
To the  extent  that the  foregoing  adjustments  relate  to Common  Stock,  the
adjustments will be made by the Board of Directors whose  determination  will be
final, binding and conclusive.

<PAGE>

         5. Method of Exercise.

                  5.1 Notice to the  Company.  The Option  may be  exercised  in
whole or in part by  written  notice in the form  attached  hereto as  Exhibit A
directed to the Company at its principal  place of business  accompanied by full
payment as  hereinafter  provided of the exercise price for the number of Option
Shares specified in the notice.

                  5.2 Delivery of Option  Shares.  The Company  shall  deliver a
certificate  for the Option Shares to T&R as soon as  practicable  after payment
therefor.

                  5.3 Payment of Purchase Price.

                           5.3.1 Cash  Payment.  T&R shall make cash payments by
wire transfer, certified or bank check or company check, in each case payable to
the  order  of the  Company;  the  Company  shall  not be  required  to  deliver
certificates  for Option  Shares until the Company has  confirmed the receipt of
good and available funds in payment of the purchase price thereof.

                           5.3.2 Stock Payment.  The Board of Directors,  in its
sole discretion, may allow T&R to use Common Stock of the Company owned by it to
make any required payments by delivery of stock  certificates in negotiable form
which are  effective  to transfer  good and valid title  thereto to the Company,
free of any liens or encumbrances.  Shares of Common Stock used for this purpose
shall be valued at the Fair Market Value.  Notwithstanding  the  foregoing,  the
Company shall have the right to reject payment in the form of Common Stock if in
the  opinion  of counsel  for the  Company,  (i) it could  result in an event of
"recapture"  under Section 16(b) of the  Securities  Exchange Act of 1934;  (ii)
such shares of Common Stock may not be sold or  transferred  to the Company;  or
(iii) such transfer could create legal difficulties for the Company.

         6.   Nonassignability.   The  Option   shall  not  be   assignable   or
transferable, except with the written consent of the Company.

         7. Company Representations.  The Company hereby represents and warrants
to T&R that:

                           (i) the  Company,  by  appropriate  and all  required
         action,  is duly authorized to enter into this Agreement and consummate
         all of the transactions contemplated hereunder; and

                           (ii) the Option Shares,  when issued and delivered by
         the Company to T&R in accordance with the terms and conditions  hereof,
         will be duly and validly issued and fully paid and non-assessable.

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<PAGE>

         8. T&R  Representations.  T&R hereby  represents  and  warrants  to the
Company that:

                           (i) it is acquiring  the Option and shall acquire the
         Option  Shares  for its own  account  and not with a view  towards  the
         distribution thereof;

                           (ii) its representatives  have received a copy of all
         reports and  documents  required  to be filed by the  Company  with the
         Securities and Exchange  Commission pursuant to the Securities Exchange
         Act of 1934,  as  amended,  within the last 24 months  and all  reports
         issued by the Company to its stockholders;

                           (iii) it  understands  that he must bear the economic
         risk of the  investment in the Option  Shares,  which cannot be sold by
         him unless they are  registered  under the  Securities Act of 1933 (the
         "1933 Act") or an exemption therefrom is available  thereunder and that
         the Company is under no  obligation  to register the Option  Shares for
         sale under the 1933 Act;

                           (iv)   its   representatives   have   had   both  the
         opportunity to ask questions and receive  answers from the officers and
         directors  of  the  Company  and  all  persons  acting  on  its  behalf
         concerning  the terms and conditions of the offer made hereunder and to
         obtain any additional  information to the extent the Company  possesses
         or may possess such information or can acquire it without  unreasonable
         effort or expense  necessary to verify the accuracy of the  information
         obtained pursuant to clause (ii) above;

                           (v) its  representatives  are aware that the  Company
         shall place stop  transfer  orders with its transfer  agent against the
         transfer of the Option Shares in the absence of registration  under the
         1933 Act or an exemption therefrom as provided herein; and

                           (vi)  if,  at the  time  of  issuance  of the  Option
         Shares,  the issuance of such shares have not been registered under the
         1933 Act, the certificates  evidencing the Option Shares shall bear the
         following legend:

                  "The shares  represented  by this  certificate  have
                  been  acquired  for  investment  and  have  not been
                  registered  under the  Securities  Act of 1933.  The
                  shares may not be sold or transferred in the absence
                  of such registration or an exemption therefrom under
                  said Act."

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<PAGE>

         9. Restriction on Transfer of Option Shares.

                  9.1    Anything   in   this    Agreement   to   the   contrary
notwithstanding, T&R hereby agrees that it shall not sell, transfer by any means
or otherwise  dispose of the Option Shares  acquired by it without  registration
under the 1933 Act, or in the event that they are not so registered,  unless (i)
an  exemption  from  the  1933  Act   registration   requirements  is  available
thereunder,  and (ii) T&R has furnished the Company with notice of such proposed
transfer and the Company's legal counsel, in its reasonable opinion,  shall deem
such proposed transfer to be so exempt.

         10. Miscellaneous.

                  10.1 Notices.  All notices,  requests,  deliveries,  payments,
demands and other  communications  which are  required or  permitted to be given
under  this  Agreement  shall  be in  writing  and  shall  be  either  delivered
personally,  transmitted by electronic means or sent by a nationally  recognized
next-day courier to the parties at their respective  addresses set forth herein,
or to such other address as either shall have  specified by notice in writing to
the  other.  Notice  shall be deemed  duly given  hereunder  when  delivered  or
transmitted as provided herein.

                  10.2 T&R and Stockholder Rights. T&R shall not have any of the
rights of a stockholder with respect to the Option Shares until such shares have
been issued after the due exercise of the Option.

                  10.3 Waiver. The waiver by any party hereto of a breach of any
provision of this Agreement shall not operate or be construed as a waiver of any
other or subsequent breach.

                  10.4 Entire Agreement.  This Agreement  constitutes the entire
agreement  between the parties with respect to the subject matter  hereof.  This
Agreement may not be amended except by writing executed by T&R and the Company.

                  10.5 Binding Effect; Successors. This Agreement shall inure to
the  benefit of and be binding  upon the  parties  hereto and, to the extent not
prohibited   herein,   their   respective   heirs,   successors,   assigns   and
representatives. Nothing in this Agreement, expressed or implied, is intended to
confer on any person other than the parties hereto and as provided above,  their
respective heirs, successors,  assigns and representatives any rights, remedies,
obligations or liabilities.

                  10.6 Governing  Law. This  Agreement  shall be governed by and
construed in accordance with the laws of the State of Florida (without regard to
choice of law provisions).

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<PAGE>

                  10.7 Headings.  The headings contained herein are for the sole
purpose of  convenience  of reference,  and shall not in any way limit or affect
the  meaning  or  interpretation  of any of the  terms  or  provisions  of  this
Agreement.

         IN WITNESS WHEREOF, the parties hereto have signed this Agreement as of
the day and year first above:

PRE-CELL SOLUTIONS, INC.                  Address: 255 East Drive, Suite C
                                                   Melbourne, Florida 33326



By: /s/ Thomas E. Biddix
   -----------------------------
   Chief Executive Offier


TOBIN & REYES, P.A.                      Address: 7251 West Palmetto Park Road
                                                  Suite 205
                                                  Boca Raton, Florida 33433
By: /s/ David Tobin
   -------------------------
Printed name: David Tobin
Title: Partner

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<PAGE>

                                                             EXHIBIT A

                      FORM OF NOTICE OF EXERCISE OF OPTION




--------------------
         DATE

PRE-CELL SOLUTIONS, INC.
255 East Drive, Suite C
Melbourne, Florida 33326
Attention:  Stock Option Committee of the Board of Directors

                  Re: Purchase of Option Shares

Gentlemen:

         In accordance  with my Stock Option  Agreement  dated as of December 1,
1998 with Pre-Cell solutions,  Inc. (the "Company"),  I hereby irrevocably elect
to  exercise  the right to purchase  _________  shares of the  Company's  common
stock, par value $.01 per share ("Common Stock").

         As payment for my shares,  enclosed is (check and  complete  applicable
box[es]):

                  " a [personal check] [certified check] [bank check] payable to
                  the order of "Global Telecommunication Solutions, Inc." in the
                  sum of $_________;

                  "   confirmation   of  wire   transfer   in  the   amount   of
                  $_____________; and/or

                  "  with  the  consent  of  the  Company,   a  certificate  for
                  __________  shares of the  Company's  Common  Stock,  free and
                  clear of any encumbrances, duly endorsed, having a fair market
                  value of $---------.

         I hereby represent and warrant to, and agree with, the Company that:

                           (i) I have  acquired the Option and shall acquire the
         Option Shares for my own account,  for investment,  and not with a view
         towards the distribution thereof;

                           (ii)  I have  received  a copy  of  all  reports  and
         documents  required  to be filed  by the  Company  with the  Commission
         pursuant to the  Exchange Act within the last 24 months and all reports
         issued by the Company to its stockholders;

                           (iii) I understand that I must bear the economic risk
         of the  investment  in the Option  Shares,  which  cannot be sold by me
         unless they are registered  under the Securities Act of 1933 (the "1933
         Act") or an exemption  therefrom is available  thereunder  and that the
         Company is under no  obligation  to register the Option Shares for sale
         under the 1933 Act;

                           (iv) I agree  that I will not sell,  transfer  by any
         means or otherwise  dispose of the Option Shares  acquired by me hereby
         except in accordance with Company's policy, if any,  regarding the sale
         and  disposition  of securities  owned by T&Rs and/or  directors of the
         Company;

                           (v) in my position with the Company,  I have had both
         the  opportunity to ask questions and receive answers from the officers
         and  directors  of the  Company  and all  persons  acting on its behalf
         concerning  the terms and conditions of the offer made hereunder and to
         obtain any additional  information to the extent the Company  possesses
         or may possess such information or can acquire it without  unreasonable
         effort or expense  necessary to verify the accuracy of the  information
         obtained pursuant to clause (ii) above;

<PAGE>

                           (vi) I am aware  that the  Company  shall  place stop
         transfer  orders with its  transfer  agent  against the transfer of the
         Option Shares in the absence of  registration  under the 1933 Act or an
         exemption therefrom as provided herein; and

                           (vii)  if,  at the  time of  issuance  of the  Option
         Shares,  the issuance of such shares have not been registered under the
         1933 Act, the certificates  evidencing the Option Shares shall bear the
         following legend:

                  "The shares  represented  by this  certificate  have
                  been  acquired  for  investment  and  have  not been
                  registered  under the  Securities  Act of 1933.  The
                  shares may not be sold or transferred in the absence
                  of such registration or an exemption therefrom under
                  said Act."

         Kindly forward to me my certificate at your earliest convenience.

Very truly yours,


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(Signature)                              (Address)

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(Print Name)

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(Federal Tax Identification Number)