Document:

Exhibit  4.5

[ + ] = CERTAIN CONFIDENTIAL  INFORMATION CONTAINED IN THIS DOCUMENT,  MARKED BY
BRACKETS, HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
COMMISSION  PURSUANT TO RULE24B-2  OF THE  SECURITIES  EXCHANGE ACT OF 1934,  AS
AMENDED.

                            ASSET PURCHASE AGREEMENT

     THIS AGREEMENT effective as of the 31 day of May, 2006, by and between HARD
TO TREAT DISEASES INC.,  ("HTTD") a Florida corporation (the "Seller") and CAVIT
SCIENCES, INC., a Florida corporation ("CVIT").

                              W I T N E S S E T H:

     WHEREAS, Seller desires to sell and CVIT desires to purchase certain assets
of the Seller comprising Seller's  proprietary  technology regarding methods for
treating viral infections and cancer (the "Proprietary Technology").

     NOW,  THEREFORE,  in  consideration  of the mutual  covenants,  agreements,
representations and warranties contained in this Agreement, the parties hereunto
agree as follows:

SECTION 1. SALE AND PURCHASE OF ASSETS.

     1.1  TRANSFER OF ASSETS.  Upon the terms and subject to the  conditions  of
this Agreement, CVIT, will at the Closing (as hereinafter defined), acquire from
Seller  the  following  assets  (collectively,   the  "Assets")  comprising  the
Proprietary Technology:

     (a)  U.S. Provisional Patent Application No. [++++++++++], U.S. Application
          No. [++++++++++] and PCT Application No. PCT/US[++++++++] for "Methods
          And  Compositions  For Treatment Of Viral  Infections" and proprietary
          rights related thereto;

     (b)  U.S.  Provisional  Patent Application No. [+++++++++] for "Methods And
          Compositions  For Treatment Of Cancer" and proprietary  rights related
          thereto;

     (c)  all testing results and protocols, in the possession of HTTD, relating
          to (a) and (b) above;

     (d)  all  research  and  valuation   documentation   regarding   comparable
          proprietary  technology acquired by drug companies,  in the possession
          of HTTD, relating to (a) and (b) above;

     (e)  all  substances  in the  possession  of HTTD  relating  to the testing
          performed on behalf of HTTD relating to (a) and (b) above;

     (f)  all  testing  results,  protocols  and  documentation  relating to the
          substances, described in (e) above, in the possession of HTTD;

     (g)  all  records,  correspondence  and all other  documents,  records  and
          files,  regardless of the form or medium in which  maintained,  in the
          possession of HTTD, which pertain to the Assets.

     1.2  EXCLUDED  ASSETS.  No assets  will be  transferred  to CVIT  except as
provided in Section 1.1 above.

                                       1
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     SECTION 2. NO ASSUMPTION OF LIABILITIES.  From and after the Closing,  CVIT
shall not assume nor be liable for any liabilities of Seller, whether contingent
or otherwise,  and whether or not such liabilities are reflected on the books or
records of Seller on the date hereof or on the Closing Date.

     SECTION 3. PURCHASE PRICE.

     3.1 THE PURCHASE  PRICE.  The purchase  price to be paid by CVIT for all of
the Assets (the  "Purchase  Price") will be eight  million four hundred  seventy
five thousand (8,475,000) restricted shares of CVIT common stock, in the form of
a stock certificate to be transferred at Closing.

     3.2 ALLOCATION OF PURCHASE PRICE..  The parties have agreed to allocate the
total  Purchase Price of $145,459 as the value of  Proprietary  Technology.  The
parties agree that any tax returns or other tax information that may be filed in
the  government  agency  shall  be  prepared  and  filed  consistent  with  such
allocation.  CVIT and Seller will upon written request to the other, provide the
requesting party with those portions of the appropriate internal revenue service
forms  which may be  required  by the  requesting  party in  connection  with an
examination of the requesting party's tax returns.

     3.3  PRORATIONS.  Within  thirty (30) days after the Closing,  the CVIT and
Seller shall  determine any final Closing  prorations and any other  settlements
necessary to properly  compensate  each party for payments  made on each other's
behalf.

     SECTION 4.  REPRESENTATIONS  AND  WARRANTIES  OF SELLER.  Seller  makes the
representations and warranties to CVIT set forth below.

     4.1 DUE  INCORPORATION.  Seller is a corporation  duly  organized,  validly
existing and in good standing under the laws of the State of Florida.

     4.2  CORPORATE  POWER OF SELLER.  Seller has the full legal right and power
and all authority and approval required to enter into,  execute and deliver this
Agreement and to perform fully its obligations hereunder.

     4.3 DUE AUTHORITY.  Seller has all power and authority  necessary to enable
it to carry out the transactions  contemplated by this Agreement.  The execution
and  delivery  of  this  Agreement  and  the  consummation  of the  transactions
contemplated by it have been authorized by all necessary corporate action on the
part of Seller.  This  Agreement  is a valid and  binding  agreement  of Seller,
enforceable  against Seller in accordance with its terms.  Neither the execution
and  delivery  of  this  Agreement  by  Seller  nor  the   consummation  of  the
transactions contemplated by this Agreement will violate, result in a breach of,
or constitute a default under,  any agreement or instrument to which Seller is a
party or by which Seller is bound, or any order, rule or regulation of any court
or governmental agency having jurisdiction over Seller.

     4.4 NO CONSENTS.  No  governmental  filings,  authorizations,  approvals or
consents are required to permit Seller to fulfill all of its  obligations  under
this Agreement.

     4.5 NO BREACH.  The execution,  delivery and  performance of this Agreement
and the  consummation  of the  transactions  contemplated  hereby  will  not (i)
violate any  provision  of the Articles of  Incorporation  or By-Laws of Seller;
(ii)  violate,  conflict  with or result  in the  breach of any of the terms of,
result in a material modification of, otherwise give any other contracting party
the right to terminate,  or constitute (or with notice or lapse of time or both)
a default  under any  contract or other  agreement  to which  Seller is a party;
(iii)  violate any order,  judgment,  injunction,  award or decree of any court,
arbitrator or governmental  or regulatory body against,  or binding upon Seller,
or upon the properties or business of Seller;  or (iv) violate any statute,  law
or regulation of any jurisdiction applicable to Seller.

     4.6 COMPLIANCE WITH LAWS.  Seller has complied in all material aspects with
all federal, state, county and local laws, ordinances, regulations, inspections,
orders,  judgments,  injunctions,  awards  or  decrees  applicable  to  Seller's
business.

                                       2
<PAGE>
     ACTIONS  AND  PROCEEDINGS.   There  is  no  outstanding  order,   judgment,
injunction,  award or decree of any court,  governmental  or regulatory  body or
arbitration  tribunal  against or  involving  the  Seller in  respect  of, or in
connection  with,  this  transaction;  (ii) there is no action,  suit,  claim or
legal,  administrative  or  arbitration  proceeding or, to the best knowledge of
Seller after due inquiry, any investigation  (whether or not the defense thereof
or liabilities in respect  thereof are covered by insurance)  pending or, to the
best knowledge of Seller, in respect of or in connection with this transaction.

     4.7 BROKERS' FEES.  Neither seller nor its affiliates have any liability or
obligation to pay any fees or commissions to any broker,  finder,  or agent with
respect to the transactions  contemplated by this Agreement for which CVIT could
become liable or obligated.

     SECTION 5.  REPRESENTATIONS  AND  WARRANTIES OF CVIT.  CVIT  represents and
warrants to Seller as follows:

     5.1  DUE  INCORPORATION.  CVIT is a  corporation  duly  organized,  validly
existing and in good standing under the laws of the State of Florida.

     5.2  CORPORATE  POWER OF CVIT.  CVIT has the full legal right and power and
all  authority  and  approval  required to enter into,  execute and deliver this
Agreement and to perform fully its obligations hereunder.

     5.3 DUE AUTHORITY.  CVIT has all power and authority necessary to enable it
to carry out the transactions  contemplated by this Agreement. The execution and
delivery of this Agreement and the consummation of the transactions contemplated
by it have been  authorized  by all  necessary  corporate  action on the part of
CVIT, including shareholder approval, if required. This Agreement is a valid and
binding  agreement  of CVIT,  enforceable  against CVIT in  accordance  with its
terms.  Neither the  execution  and  delivery of this  Agreement by CVIT nor the
consummation  of the  transactions  contemplated by this Agreement will violate,
result  in a breach  of,  or  constitute  a  default  under,  any  agreement  or
instrument  to which  CVIT is a party or by which  CVIT is bound,  or any order,
rule or regulation of any court or governmental  agency having jurisdiction over
CVIT.

     5.4 NO BREACH.  The execution,  delivery and  performance of this Agreement
and the  consummation  of the  transactions  contemplated  hereby  will  not (i)
violate any provision of the Articles of  Incorporation or By-Laws of CVIT; (ii)
violate, conflict with or result in the breach of any of the terms of, result in
a material modification of, otherwise give any other contracting party the right
to terminate,  or constitute (or with notice or lapse of time or both) a default
under any contract or other  agreement to which CVIT is a party;  (iii)  violate
any order,  judgment,  injunction,  award or decree of any court,  arbitrator or
governmental  or  regulatory  body  against,  or binding upon CVIT,  or upon the
properties or business of CVIT;  or (iv) violate any statute,  law or regulation
of any jurisdiction applicable to CVIT.

     5.5 BROKERS' FEES.  Neither CVIT nor its  affiliates  have any liability or
obligation to pay any fees or commissions to any broker,  finder,  or agent with
respect to the transactions  contemplated by this Agreement for which the Seller
could become liable or obligated.

     SECTION 6. CLOSING ITEMS.

     6.1 CVIT Deliveries. At Closing, CVIT shall deliver to Seller the following
documents:

     (a)  a stock  certificate  for eight  million  four  hundred  seventy  five
          thousand  (8,475,000)  shares of CVIT  restricted  common stock in the
          name of HTTD.

     (b)  a  "certified  copy  of a  resolution  of  CVIT'  Board  of  Directors
          authorizing  the  execution  and  delivery of this  Agreement  and the
          purchase of the assets; and

                                       3
<PAGE>
     (c)  other purchase documents: all such documents and instruments as Seller
          may  reasonably  request in connection  with the  consummation  of the
          transaction  contemplated by this  Agreement,  including an Assignment
          and Assumption Agreement (exhibit E) executed by both Seller and CVIT.

     6.2  SELLER'S  DELIVERIES.  At Closing,  Seller  shall  deliver to CVIT the
following documents:

     (a)  a Bill of Sale for the Assets (Exhibit A);

     (b)  a  certified  copy of a  resolution  of  Seller's  Board of  Directors
          authorizing  the  execution  and  delivery of this  Agreement  and the
          purchase of the Assets; and

     (c)  other purchase  documents:  all such documents and instruments as CVIT
          may  reasonably  request in connection  with the  consummation  of the
          transaction  contemplated by this  Agreement,  including an Assignment
          and Assumption Agreement (exhibit E) executed by both Seller and CVIT.

     SECTION 7. INDEMNIFICATION.

     7.1  INDEMNIFICATION  BY SELLER.  Seller shall indemnify,  defend, and hold
CVIT and its representatives, successors, and assigns, harmless from and against
any and all damage,  loss,  judgments,  or liability and all expenses (including
reasonable  attorneys'  fees)  incurred  by  any  of  the  above-named  persons,
resulting from or in connection with:

     (a) the Assets prior to the Closing Date, or

     (b) any material breach by Seller or any representation or covenant made by
Seller in, or any obligation of Seller under this Agreement.

     7.2 INDEMNIFICATION BY CVIT. CVIT shall indemnify,  defend, and hold Seller
and its representatives,  successors, and assigns, harmless from and against any
and all damage,  loss,  judgments,  or  liability  and all  expenses  (including
reasonable  attorneys'  fees)  incurred  by  any  of  the  above-named  persons,
resulting from or in connection with:

     (a) any material breach by CVIT or any  representation  or covenant made by
CVIT in, or any obligation of CVIT under this Agreement.

     SECTION 8. FURTHER ASSURANCES. The parties shall execute such documents and
other  papers and take such  further  actions as may be  reasonably  required or
desirable to carry out the provisions  hereof and the transactions  contemplated
hereby.  In addition and following  the Closing,  CVIT and Seller shall grant to
the other  reasonable  access to the books and records of the  Business so as to
permit, if necessary,  the filing of tax returns, audits of tax returns or other
bona fide purposes.

     SECTION 9. MISCELLANEOUS.

     9.1  NOTICES.Any  notice of other  communication  required  or which may be
given  hereunder  shall  be  in  writing  and  shall  be  delivered  personally,
telegraphed,  telexed,  sent by  facsimile  transmission  or sent by  certified,
registered,  or express mail,  postage prepaid and shall be deemed given when so
delivered personally,  telegraphed, telexed or sent by facsimile transmission or
if mailed, four (4) days after the date of mailing, as follows:

         If to Seller:      Hard To Treat Diseases Incorporated
                            100 East Linton Blvd., Suite 106 B
                            Delray Beach, Florida   33483
                            Attention:  Colm J. King, CEO
                            (561) 276-2023 FAX

                                       4
<PAGE>
         If to CVIT:        Cavit Sciences, Inc.
                            100 East Linton Blvd., Suite 106 B
                            Delray Beach, Florida   33483
                            Attention:  Colm J. King, CEO
                            (561) 276-2023 FAX

     Any party may by notice given in accordance  with this Section to the other
parties designate another address or person for receipt of notice hereunder.

     9.2 ENTIRE  AGREEMENT.  This Agreement  (including the Exhibits hereto) and
any collateral  agreements  executed in connection with the  consummation of the
transactions  contemplated herein contain the entire agreement among the parties
with  respect  to the  subject  matter  hereof  and  related  transactions,  and
supersede all prior agreements, written or oral, with respect thereto.

     9.3 WAIVERS  AND  AMENDMENTS.  This  Agreement  may be  amended,  modified,
superseded,  cancelled, renewed or extended, and the terms and conditions hereof
may be waived,  only by a written  instrument  signed by the  parties or, in the
case of a waiver, by the party waiving compliance.

     9.4 REMEDIES NOT  EXCLUSIVE.  The rights and remedies  herein  provided are
cumulative  and are not exclusive of any rights or remedies  which any party may
otherwise  have at law or in equity.  The rights and remedies of any party based
upon,  arising out of or otherwise in respect of any  inaccuracy in or breach of
any representation,  warranty, covenant or agreement contained in this Agreement
shall in no way be limited  by the fact that the act,  omission,  occurrence  or
other state of facts upon which the claim of any  inaccuracy  or breach is based
may also be the subject matter of any other representation,  warranty,  covenant
or agreement  contained in this Agreement (or in any other agreement between the
parties) as to which there is no inaccuracy or breach.

     9.5  GOVERNING  LAW.  This  Agreement  shall be governed  and  construed in
accordance  with the laws of the State of Florida  applicable to agreements made
and to be performed entirely within such state and jurisdiction shall be in Palm
Beach County, Florida.

     9.6 EXHIBITS:  The exhibits to this  Agreement are a part of this Agreement
as if set forth in full herein.

     9.7 HEADINGS.  The headings in this  Agreement  are for reference  purposes
only and shall not in any way  affect  the  meaning  or  interpretation  of this
Agreement.

     9.8  SEVERABILITY.  If any  term or  provision  of this  Agreement,  or the
application  thereof to any person or  circumstance  shall,  to any  extent,  be
determined by a court of competent  jurisdiction to be invalid or unenforceable,
the remainder of this Agreement or the  application of such term or provision to
persons or  circumstances  other  than  those as to which it is held  invalid or
unenforceable,  shall not be affected  thereby,  and each term and  provision of
this Agreement  shall be valid and enforced to the fullest  extend  permitted by
law.

     9.9  COUNTERPARTS.  This  Agreement  may  be  executed  in  any  number  of
counterparts,  each of which when so executed, shall constitute an original copy
hereof,  but all of  which  together  shall  constitute  but  one  and the  same
document.

     9.10 NO ASSIGNMENT. Other than such permitted assignment, this Agreement is
not assignable  except by operation of law,  without the written  consent of the
non-assigning parties which consent shall not be unreasonably withheld.

     9.11 FURTHER ASSURANCES. The parties shall execute such documents and other
papers and take such further actions as may be reasonably  required or desirable
to carry out the provisions hereof and the transactions  contemplated hereby. In
addition,  and following  the Closing,  CVIT and Seller shall grant to the other
reasonable  access to the books and records of the Business so as to permit,  if
necessary,  the filing of tax returns,  audits of tax returns or other bona fide
purposes.

                                       5
<PAGE>
     IN WITNESS  WHEREOF,  the parties have executed this  Agreement on the date
first above written.

ON BEHALF OF:
CAVIT SCIENCES, INC

By: /s/ Colm J. King                         By: /s/ Julio De Leon
   ----------------------------------           --------------------------------
Name:  Colm J. King                          Name:  Julio De Leon
Title: President and CEO                     Title: Director
Date:  May 31, 2006                          Date:  May 31, 2006

By: /s/ Harvey Judkowitz
   ----------------------------------
Name:  Harvey Judkowitz
Title: Director
Date:  May 31, 2006

ON BEHALF OF:
HARD TO TREAT DISEASES, INC.

By: /s/ Colm J. King                         By: /s/ Harvey Judkowitz
   ----------------------------------           --------------------------------
Name:  Colm J. King                          Name:  Harvey Judkowitz
Title: President and CEO                     Title: Director
Date:  May 31, 2006                          Date:  May 31, 2006

Cc: David E. Wise

                                       6
<PAGE>
                                    EXHIBIT A

                                  BILL OF SALE

     KNOW ALL MEN BY THESE  PRESENTS that HARD TO TREAT DISEASES INC., a Florida
corporation  ("Seller"),   in  consideration  of  that  certain  Asset  Purchase
Agreement  dated as of May 31, 2006  between  CAVIT  SCIENCES,  INC.,  a Florida
corporation ("Purchaser"),  and Seller (the "Purchase Agreement"), and for other
good and valuable consideration,  the receipt and sufficiency of which is hereby
acknowledged,  has granted,  conveyed,  assigned,  transferred  and delivered to
Purchaser and by these presents does grant, convey, assign, transfer and deliver
to Purchaser,  all of Seller's right, title,  interest and benefit in and to the
Assets (as  defined  in the  Purchase  Agreement)  free and clear of any and all
liabilities,  liens,  encumbrances,   mortgages,  security  interests,  pledges,
restrictions and claims of any kind or nature,  contingent or otherwise,  except
as expressly provided in the Purchase Agreement.

     TO AND TO HOLD the same unto Purchaser, its successor and assigns forever.

     AND  Seller  does,  for  itself  and its  successors  and  assigns,  hereby
represents, warrants, covenants and agrees to and with Purchaser, its successors
and assigns,  that it is the lawful owner of the Assets; that they are free from
any  and  all  encumbrances,  except  as  expressly  provided  in  the  Purchase
Agreement;  that it has good and valid right to bargain, grant, transfer, convey
and deliver the same to Purchaser;  and that it will warrant and defend title to
the Assets,  unto  Purchaser,  its  successors  and assigns,  against the lawful
claims and demands of all persons whomsoever.

     Seller  hereby  constitutes  and appoints  Purchaser,  its  successors  and
assigns, the true and lawful attorney or attorneys of Seller, with full power of
substitution,  in the name of Purchaser or in the name of Seller,  but by and on
behalf of and for the sole benefit of Purchaser,  its successors and assigns, to
demand and receive from time to time any and all of the Assets, and from time to
time to institute and prosecute, in the name of Seller or otherwise, any and all
proceedings  at law, in equity or otherwise  which  Purchaser or its  successors
assigns may deem necessary or desirable in order to receive,  collect, assert or
enforce  any  claim,  right  or title  of any  kind in or to the  Assets  hereby
transferred, assigned and conveyed to Purchaser and to defend and compromise any
and all actions, suits or proceedings in respect thereof and to do all such acts
and things and execute any  instruments in relation  thereto as Purchaser or its
successors  or assigns  shall deem  advisable.  Seller agrees that the foregoing
appointment  made and the powers hereby granted are coupled with an interest and
shall be irrevocable by Seller or by its dissolution or in any manner or for any
reason.

     Seller  covenants  and agrees  that in the event that either (i) any of the
Assets  covered in this Bill of Sale  cannot be  transferred  or  assigned by it
without  the  consent of or notice to a third  party and in respect of which any
necessary  consent or notice has not as of the date of  delivery of this Bill of
Sale been given or obtained,  or (ii) any such Assets are nonassignable in their
nature and will not pass by this Bill of Sale, the beneficial interest in and to
the same will in any event pass to  Purchaser;  and Seller  covenants and agrees
(a) to hold, and hereby declare that it holds, such Assets in trust for, and for
the  benefit of,  Purchaser,  (b) to use all  reasonable  means to obtain and to
secure  such  consent  and give such notice as may be required to effect a valid
transfer or transfers of such Assets,  and (c) to make or complete such transfer
or transfers as soon as reasonably possible.

     Seller,  for itself and its successors and assigns,  further  covenants and
agrees  that it will at any time  and  from  time to  time,  at the  request  of
Purchaser,  its successors or assigns,  do, execute and deliver,  or cause to be
done, executed or delivered,  all such further acts, transfers,  assignments and
conveyances,  for the better assuring,  conveying and confirming unto Purchaser,
its successors or assigns,  full right, title, interest and benefit in or to the
Assets as Purchaser, its successors or assigns shall reasonably require.

     All of the terms and  provisions of this Bill of Sale shall be binding upon
Seller  and its  successors  and  assigns  and  shall  inure to the  benefit  of
Purchaser and its successors and assigns.

                                       7
<PAGE>
     IN WITNESS WHEREOF, Seller has caused this Bill of Sale to be signed in its
name by its officer  thereunto  duly  authorized  and its  corporate  seal to be
hereunto affixed as of the 31st day of May 2006.

                                HARD TO TREAT DISEASES INC.

                                 By: /s/ Colm J. King
                                    ---------------------------------------
                                    Colm J. King, CEO

                                 By: /s/ Harvey Judkowitz
                                    ---------------------------------------
                                    Harvey Judkowitz, Director

                                       8
<PAGE>
                                    EXHIBIT B

                       ASSIGNMENT AND ASSUMPTION AGREEMENT

     THIS   ASSIGNMENT  AND  ASSUMPTION   AGREEMENT  dated  May  31,  2006  (the
"Agreement")  by and between HARD TO TREAT DISEASES INC., a Florida  Corporation
("Seller"), and CAVIT SCIENCES, INC., a Florida corporation ("Purchaser").

                              W I T N E S S E T H:

     WHEREAS,  pursuant to the terms of that certain  Asset  Purchase  Agreement
dated as of May 31, 2006 by and  between  Purchaser  and Seller  (the  "Purchase
Agreement"),  Seller as agreed to assign to Purchaser,  and Purchaser has agreed
to assume from  Seller,  the  Assured  Obligations  (as defined in the  Purchase
Agreement);

     NOW,  THEREFORE,  for good  and  valuable  consideration  the  receipt  and
sufficiency  of which are  hereby  acknowledged,  each of Seller  and  Purchaser
hereby agree as follows:

1. Assignment and Assumption.  Seller hereby assigns to Purchaser, and Purchaser
hereby  assumes and agrees to perform and discharge when due, all of the Assumed
Obligations.

2. Governing  Law. This  Agreement  shall be governed by, and shall be construed
and interpreted in accordance with, the laws of the State of Florida.

3. Benefits;  Binding Effect.  This Agreement shall inure to the benefit of, and
shall be binding upon,  the parties hereto and their  respective  successors and
assigns.

     IN WITNESS  WHEREOF,  Seller and Purchaser have executed and delivered this
Agreement on the date first above written.

See attached signature page:

                                       9
<PAGE>
ON BEHALF OF:
CAVIT SCIENCES, INC

By: /s/ Colm J. King                         By: /s/ Julio De Leon
   ----------------------------------           --------------------------------
Name:  Colm J. King                          Name:  Julio De Leon
Title: President and CEO                     Title: Director
Date:  May 31, 2006                          Date:  May 31, 2006

By: /s/ Harvey Judkowitz
   ----------------------------------
Name:  Harvey Judkowitz
Title: Director
Date:  May 31, 2006

ON BEHALF OF:
HARD TO TREAT DISEASES, INC.

By: /s/ Colm J. King                         By: /s/ Harvey Judkowitz
   ----------------------------------           --------------------------------
Name:  Colm J. King                          Name:  Harvey Judkowitz
Title: President and CEO                     Title: Director
Date:  May 31, 2006                          Date:  May 31, 2006

Cc: David E. Wise

                                       10Exhibit 4.7

                   MANAGEMENT, ADVISORY AND SUPPORT AGREEMENT

     THIS MANAGEMENT,  ADVISORY AND SUPPORT  AGREEMENT  ("Agreement") is entered
into as of June  1,  2006,  by and  between  Cavit  Sciences,  Inc.,  a  Florida
corporation ("Cavit"),  and Hard to Treat Diseases,  Inc., a Florida corporation
("HTTD"). Cavit and HTTD have offices at 100 East Linton Boulevard, Suite 106 B,
Delray Beach, Florida 33483.

                                    RECITALS

A.   Cavit is a recently formed corporation created by HTTD as a subsidiary;

B.   HTTD is a seasoned corporation with a management team, business offices and
     support personnel; and

C.   Cavit  desires  to  contract  with HTTD for the  provision  of  management,
     advisory and support and HTTD desires to provide such management,  advisory
     and support to Cavit.

NOW,  THEREFORE,  in  consideration  of the premises and of the mutual  promises
herein, the parties covenant and agree as follows:

1.   Term. The term of this Agreement shall be for twelve (12) months  following
     the date hereof.  This Agreement may be extended for an additional  term of
     one or more years upon the mutual  written  agreement of the parties.  This
     Agreement may be terminated by either party at the end of the first six (6)
     months.

2.   Management,  Advisory  and  Support.  HTTD  shall  provide  management  and
     advisory  services to Cavit.  In addition,  HTTD shall  provide  Cavit with
     access to HTTD offices,  telecommunication equipment, incidental equipment,
     office supplies and furniture.

3.   Fees. HTTD shall be compensated for the management, advisory and support it
     provides to Cavit by a monthly fee of One Thousand Dollars  ($1,000.00) per
     month, beginning with the month of June 2006.

4.   Independent  Contractor Status.  Cavit and HTTD are independent  businesses
     and persons, and as such they shall remain  professionally and economically
     independent of each other.  Cavit and HTTD are not, and shall not be deemed
     to be,  joint  venturers,  partners,  employees  or agents  of each  other.
     Neither  party shall have any authority to bind the other without the other
     party's  express and prior written  consent,  and then only insofar as such
     authority is conferred by such express and prior written  consent.  Nothing
     in this Agreement,  whether  express or implied,  is intended to confer any
     rights or  remedies  on any person  other than the  parties to it and their
     respective successors and assigns.

5.   Severable Provisions.  The provisions of this Agreement are severable,  and
     if  any  one  or  more   provisions   are   determined   to  be  judicially
     unenforceable,  in  whole  or  in  part,  the  remaining  provisions  shall
     nevertheless be binding and enforceable.

6.   Notices.  Any notice or notices to be given under this  Agreement  shall be
     sent via certified mail to the address of the party set forth above.

7.   Governing Law. This Agreement shall be governed by the laws of the State of
     Florida.

                                       1
<PAGE>
8.   Arbitration.  The parties hereto agree to submit any and all  controversies
     under this Agreement to binding arbitration before the American Arbitration
     Association  ("AAA") at a hearing or  hearings to be  conducted  in or near
     Delray Beach, Florida.

9.   Counterpart;  Facsimile.  This  Agreement  may be  executed  in one or more
     counterparts,  each of which shall be deemed an original,  but all of which
     together shall constitute one and the same  instrument.  The parties hereto
     may execute the original of this Agreement or facsimile  copies of same and
     the Agreement so executed shall be binding on the parties.

EXECUTED AS OF THE DAY AND YEAR FIRST ABOVE WRITTEN.

Cavit Sciences, Inc.

By: /s/ Colm J. King
   ---------------------------------
   Colm J. King
   Chief Executive Officer

Hard to Treat Diseases, Inc.

By: /s/ Colm J. King
   ---------------------------------
   Colm J. King
   Chief Executive Officer

                                       2

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