EXHIBIT 4.6

                             [FRONT OF CERTIFICATE]

               INCORPORATED UNDER THE LAWS OF THE STATE OF FLORIDA

NUMBER                                                                    SHARES

                                                           CUSIP NO. 14964T 10 1

                              CAVIT SCINECES, INC.
        45,000,000 COMMON AUTHORIZED SHARES $.01 PAR VALUE NON-ASSESSABLE

     THIS  CERTIFIES  THAT   __________________________________________  is  the
registered  holder of of CAVIT SCIENCES,  INC. Common Stock  transferable on the
Books of the  Corporation  by the holder hereof in person or by duly  authorized
attorney upon surrender of this Certificate properly endorsed.  This Certificate
is not valid until  countersigned  by the Transfer  Agent and  registered by the
Registrar.

     WITNESS the facsimile seal of the Corporation  and the facsimile  signature
of its duly authorized officers.

                             Countersigned and Registered
                             Gulf Registrar and Transfer Corporation
                             2542 Cliff Drive, Dickinson, Texas 77539
                             By: /s/ William Little
                                ------------------------------------------------
                             Transfer Agent and Registrar - Authorized Signature



/s/ Colm J. King                     /s/ Julio De Leon
- ----------------------------         -----------------------------
President                            Secretary


                              CAVIT SCIENCES, INC.
                                    Corporate
                                      SEAL
                                     FLORIDA

                              [BACK OF CERTIFICATE]


The following  abbreviations  when used in the  inscription  on the face of this
certificate shall be construed as though they were written our in full according
to applicable laws or regulations:

TEN COM - as tenants in common     UNIF GIFT MIN ACT-______ Custodian __________
TEN ENT - as tenants by the entirety                 (Cust)            (Minor)
JT TEN - as joint tenants with right               under Uniform Gifts to Minors
         of survivorship and not as                Act ___________________
         tenants in common                         (State)

     For Value Received, ________________ hereby sell, assign and transfer unto


Please Insert Social Security or other
Identifying Number of Assignee

______________________________________

________________________________________________________________________________
  (Please Print or Typewrite Name and Address, Including Zip Code of Assignee)

________________________________________________________________________________

_________________________________________________________________________ Shares
of the capital stock represented by the within certificate, and do hereby
irrevocably constitute and appoint
________________________________________________________________________________
Attorney to transfer the said stock on the books of the within named Corporation
with full power of substitution in the premises.

Dated __________________________

NOTICE:  Signature must  correspond to the name as written upon the face of this
certificate in every particular, without alteration or enlargement or any change
whatsoever  and must be  guaranteed  by a bank,  broker  or any  other  eligible
guarantor  institution that is authorized to do so under the Securities Transfer
Agents Medallion Program (Stamp) under rules promulgated by the U.S.  Securities
and Exchange Commission.