Document:

EXHIBIT A

                                 PLAN OF MERGER

     THIS PLAN OF MERGER (this "Plan of Merger"),  dated as of March 6, 2000, is
among  Pathobiotek  Diagnostics,  Inc.,  a  Texas  corporation  ("Parent"),  and
Investra Enterprises,  Inc., a Florida corporation (the "Company") (collectively
"Constituent Corporations").

          WHEREAS, Parent owns 100% of the shares of the Company and the parties
thereto have agreed to the merger of the Company with and into Parent; and

          WHEREAS,   Parent,  as  the  sole  shareholder  of  Company  and,  the
respective  Boards of Directors of Parent and the  Company,)  have each approved
the merger of the Company  into  Parent in  accordance  with the Texas  Business
Corporation Act (the "TBCA") and

         WHEREAS,  this Plan of Merger  shall be filed with  Articles  of Merger
with the  Secretaries  of State of Florida and Texas in order to consummate  the
merger of the Company with and into Parent; and

          WHEREAS,  Parent and the Company  have agreed to execute and file this
Plan of Merger as provided under the Florida Law and the TBCA.

          NOW,  THEREFORE,  in  consideration  of the  premises  and the  mutual
covenants herein contained, Parent and the Company hereby agree as follows:

         1. THE  MERGER.  At the  Effective  Time (as  defined  in  Section  1.3
hereof),  in accordance with this Plan of Merger,  and Florida Law and the TBCA,
the  Company  shall be merged  (such  merger  being  herein  referred  to as the
"Merger") with and into the Parent,  the separate existence of the Company shall
cease,  and  Parent  shall  continue  as  the  surviving   corporation.   Parent
hereinafter sometimes is referred to as the "Surviving Corporation."

          2.  EFFECT OF THE  MERGER.  When the  Merger  has been  effected,  the
Surviving Corporation shall retain the name "Pathobiotek Diagnostics, Inc."; and
the Surviving Corporation shall thereupon and thereafter possess all the rights,
privileges,  powers and  franchises of a public as well as of a private  nature,
and be subject to all the  restrictions,  disabilities and duties of each of the
Corporations;   and  all  and  singular,  the  rights,  privileges,  powers  and
franchises  of each of the  Constituent  Corporations  and all  property,  real,
personal and mixed,  and all debts due to either of the Corporations on whatever
account,  as well for  stock  subscriptions  as all  other  things  in action or
belonging  to  each  of such  corporations  shall  be  vested  in the  Surviving
Corporation;  and all property, rights,  privileges,  powers and franchises, and
all and every other interest shall be thereafter as effectually  the property of
the Surviving Corporation as they were of the Constituent Corporations,  and the
title to any real estate vested by deed or otherwise, in any of such Constituent
Corporations,  shall  not  revert  or be in any way  impaired  by  reason of the
Merger;  but all rights of  creditors  and all liens upon any property of any of
said  Constituent  Corporations  shall be preserved  unimpaired,  and all debts,
liabilities  and  duties  of  the  respective  Constituent   Corporations  shall
thenceforth attach to the Surviving Corporation,  and may be enforced against it
to the same extent as if said debts, liabilities and duties had been incurred or
contracted by it.

         3. CONSUMMATION OF THE MERGER. The parties hereto will cause the Merger
to be  consummated by filing with the Secretary of State of Florida and Texas an
articles  of merger  and this Plan of Merger in such form as  required  by,  and
executed in accordance with, the relevant  provisions of the Florida Law and the
TCBA (the time of such filing  being the  "Effective  Time" and the date of such
filing being the "Effective Date").

     4. ARTICLES OF INCORPORATION:  BYLAWS: DIRECTORS AND OFFICERS. The Articles
of Incorporation and bylaws of the Surviving Corporation shall be identical with
the Articles of Incorporation and bylaws of the Parent as in effect  immediately
prior to the  EffectiveTime  until  thereafter  amended as provided  therein and
under the Texas Law.

     5. CONVERSION OF SECURITIES. At the Effective Time, by virtue of the Merger
and without  any action on the part of Parent,  the Company or the holder of any
of the shares  (the  "Shares")  of common  stock,  (the  "Common  Stock") of the
Company:

          (a)  Each  Share  issued  and  outstanding  immediately  prior  to the
Effective  Time shall  remain as issued and  outstanding  common stock of parent
without change.

          (b) Each Share  which is held in the  treasury of the Company or which
is owned by any direct or indirect  subsidiary  of the Company shall be canceled
and retired, and no payment shall be made with respect thereto.

          (c) Each  outstanding  or authorized  subscription,  option,  warrant,
call, right (including any preemptive right),  commitment, or other agreement of
any character  whatsoever which obligates or may obligate the Parent to issue or
sell any additional  shares of its capital stock or any  securities  convertible
into or evidencing the right to subscribe for any shares of its capital stock or
securities  convertible  into or  exchangeable  for such shares,  if any,  shall
remain unchanged.

          (d) Each  share of Common  Stock,  of Company  issued and  outstanding
immediately  prior to the Effective Time shall be retired into treasury,  of the
Surviving Corporation.

          (e) No  Fractional  Shares  and no  certificates  or scrip
representing  such  fractional  Merger Shares, shall be issued:

          6. TAKING OF NECESSARY ACTION:  FURTHER ACTION.  Each of Parent, and
the Company shall use all reasonable  efforts to take all such actions as may be
necessary or  appropriate  in order to  effectuate  the Merger under the Florida
Law, the TCBA or federal law as promptly as possible.  If, at any time after the
Effective  Time,  any further  action is necessary or desirable to carry out the
purposes of the Agreement and to vest the Surviving Corporation with full right,
title and possession to all assets,  property,  rights,  privileges,  powers and
franchises of either of the Constituent Corporations, the officers and directors
of the  Surviving  Corporation  are  fully  authorized  in  the  name  of  their
corporation  or otherwise to take, and shall take, all such lawful and necessary
action.

     IN WITNESS WHEREOF,  Parent,  Parent, and the Company have caused this Plan
of Merger to be executed as of the date first above written.

                      INVESTRA ENTERPRISES, INC.
                      (A Florida corporation)

                      By:/s/Scott Deitler

                      PATHOBIOTEK DIAGNOSTICS, INC.
                      (A Texas corporation)

                       By:/s/Paul Enright
                       Paul Enright by Power of Attorney

<PAGE>

                               ARTICLES OF MERGER

                                       OF

                          PATHOBIOTEK DIAGNOSTICS, INC.
                              (A Utah Corporation)

                                      INTO

                          PATHOBIOTEK DIAGNOSTICS, INC.
                              (A Texas Corporation)

Filed in the Office of the
Secretary of State of the
State of Texas

Jan 05 1999
No.: C30645-98
Dean Heller, Secretary of State

     The Undersigned,  being sole Director of Pathobiotek  Diagnostics,  Inc., a
Utah corporation,  and the sole officer and director of Pathobiotek Diagnostics,
Inc., a Texas corporation, hereby certify as follows:

     1. A merger for the purpose of changing  domicile has been  approved by the
board of directors of Pathobiotek  Diagnostics,  Inc., a Utah  corporation,  and
Pathobiotek Diagnostics, Inc., a Texas corporation.

     2.  Shareholders  owning  5,100,000  of  the  shares  of  common  stock  of
Pathobiotek Diagnostics,  Inc., a Utah corporation,  which number of shares is a
majority of the approximately  8,223,373 shares  outstanding,  voted in favor of
such  merger  on  December  14,  1998.  The  sole   shareholder  of  Pathobiotek
Diagnostics,  Inc.,  a Texas  corporation,  voted  for such  plan of  merger  on
December 31, 1998.

     3.  A  Notice,  including  a  summary  of the  merger,  was  mailed  to all
shareholders of the Utah Corporation on or about November 30, 1998.

     4. Sheridan  Industries,  Inc., a Texas corporation,  hereby agrees that it
will prmptly pay to the dissenting shareholders, if any, of Sheridan Industries,
Inc., a Utah  corporation,  the amount,  if any, to which they shall be entitled
under the provisions of the Utah Corporation Statutes with respect to the rights
of dissenting shareholders.

         EFFECTIVE THE 31ST day of December, 1998

Pathobiotek Diagnostics, Inc.                    Pathobiotek Diagnostics, Inc.
A Utah corporation                               A Texas corporation

BY:/S/ROBERT KROPF                               BY:/S/ROBERT KROPF
Robert Kropf, President/Secretary                Robert Kropf,
                                                 President/Secretary

<PAGE>

State of Utah                       )
                                    )ss.
County of Salt Lake City            )

         ON  THIS  4TH  day of  January,  1999,  before  me,  a  Notary  Public,
personally  appeared  Robert  Kropf,  and  executed  on this date the  foregoing
instrument for the purposes therein contained, by signing on behalf of the above
named corporations as a duly authorized director and officer.

         IN WITNESS WHEREOF, I have hereunto set my hand and official seal.

                                    /S/JENNIFER L. CLARK

                                    Notary Public
                                    Residing at: Salt Lake

My Commission Expires:
7-1-02

<PAGE>

                           NOTICE OF A SPECIAL MEETING

                             OF THE SHAREHOLDERS OF

                          PATHOBIOTEK DIAGNOSTICS, INC.

     The Board of Directors of Pathobiotek Diagnostics, Inc., a Utah corporation
("the  Company"),  hereby give notice that a special meeting of the shareholders
of record,  as of December 1, 1998,  is called and will be held on December  14,
1998, at 8:00 a.m. at 4505 South Wasatch Blvd., Suite 21, Salt Lake City, Utah.

         The purpose of the meeting is to  authorize  the Board of  Directors to
effect a 120 to 1 reverse  split of the  Company's  common  stock,  authorize  a
change of the  Company's  domicile  from Utah to Texas,  and any other  matters,
which come before the shareholders.

         PLAN OF MERGER:  The Company will form a Texas subsidiary to effectuate
a change of corporate  domicile.  Following the reverse split,  the shareholders
shall receive one share of the Texas Corporation for each share of the Company.

         Any  shareholders,  who will be voting  through a proxy,  must have the
person  representing  them at the  meeting  present a copy of a signed and dated
proxy statement when they arrive at the meeting.

         Your proxy is not being solicited by the Board of Directors.

         DATED THIS 30TH day of November, 1998.

                                    By Order Of:

                                    The Board of DirectorsSTOCK REPURCHASE AGREEMENT

     THIS STOCK REPURCHASE  AGREEMENT (this "Agreement") is made effective as of
August  19,1998,  by and  between  Premier  Brands,  Inc.,  a  Utah  corporation
("Premier"),  with its principal place of business at 268 West 400 South,  Suite
300, Salt Lake City, Utah 84 1 01 and Keith R. Lipscomb  ("Keith"),  residing at
9571 Onset Circle, Huntington Beach, California 92646.

                                    PREMISES

          A. Keith owns seven  hundred  thirty three  thousand  sixty  (733,060)
          pre-reverse split shares of common stock of Premier (the "Shares").

          B.  Premier is  interested  in  reacquiring  the Shares  from Keith in
          exchange for retention by Keith of ownership of a certain  quantity of
          sports  trading  cards and of two (2) parcels of land  situated on the
          Island of Hawaii in the State of Hawaii.

                                    AGREEMENT

         BASED on the above  Premises,  which are  hereby  incorporated  by this
reference and in  consideration  of the mutual promises  contained  herein,  the
benefits  to be  derived  by each party  hereunder  and other good and  valuable
consideration,  the sufficiency of which is hereby expressly acknowledged, Keith
and Premier agree as follows:

1. PURPOSE

     On the basis of the  representations  contained  herein and  subject to the
terms and conditions  set forth herein,  Premier agrees to repurchase the Shares
from Keith in  exchange  for  retention  by Keith of the  aforementioned  sports
trading cards and two (2) parcels of land.

2. DELIVERY OF THE SHARES

          A. Keith shall  deliver the  certificates  representing  the Shares to
          Premier with his execution of this agreement,  along with signed stock
          powers bearing Medallion stamped signature guaranties .

          B. Premier, by execution of this agreement, grants to Keith possession
          of both the sports  trading  cards and the two (2)  parcels of land on
          the Island of Hawaii.

3. REPRESENTATIONS AND WARRANTIES OF KEITH
   Keith hereby represents and warrants to Premier that:

          A.  Authority.  This  Agreement has been duly  executed by Keith.  The
          execution and performance of this Agreement will not violate or result
          in a breach of, or constitute a default in any agreement,  instrument,
          judgement, order or decree to which Keith is a party or to which he is
          subject.

          B. Transfer. Keith transfers the title to the Shares to Premier.

          C. Information.  No representation or warranty  contained herein,  nor
          statement in any document,  certificate or schedule furnished or to be
          furnished pursuant to this Agreement by Keith

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<PAGE>

          in connection with the transaction  contemplated  hereby,  contains or
          contained any untrue  statement of a material  fact,  nor does or will
          omit to state a material fact  necessary to make any statement of fact
          contained herein not misleading.

4.  REPRESENTATIONS  AND  WARRANTIES OF PREMIER

Premier  hereby  represents  and  warrants to Keith  that:  A.  Authority.  This
Agreement has been duly executed by Premier.  The execution and  performance  of
this  Agreement  will not  violate,  or result in a breach of, or  constitute  a
default  in any  agreement,  instrument,  judgement,  order or  decree  to which
Premier is a party or to which  Premier is subject nor will such  execution  and
performance  constitute a violation of or conflict  with any  fiduciary  duty to
which Premier is subject.

         B.       Security Compliance.  Premier hereby represents to Keith that:

                    (i)   Premier   is   acquiring   the  Shares  in  a  private
                    transaction.

                    (ii) Premier will not sell, transfer or otherwise dispose of
                    the Shares except in compliance  with the  Securities Act of
                    1933, as amended (the "Securities Act").

5. TERMINATION

Either  party may  terminate  this  Agreement  at  anytime  prior to the date of
Closing if there is any actual or  threatened  action or proceeding by or before
any court or any other governmental body which seeks to restrain,  prohibit,  or
invalidate the transactions which this Agreement  contemplates and which, in the
judgment of the party giving  notice to  terminate  and based upon the advice of
legal counsel,  makes it inadvisable to proceed with the transactions which this
Agreement contemplates.

6.       MISCELLANEOUS

          A. Notices.  Any notice under this  Agreement  shall be deemed to have
          been  sufficiently  given if sent by  registered  or  certified  mail,
          postage prepaid, addressed as follows:

          Premier  Brands,  Inc.
          268 West 400,  Suite 300
          Salt Lake City,  Utah 84101
          Attention: Richard D. Surber

          Keith R. Lipscomb
          9571 Onset Circle
          Huntington Beach, California 92646

          or to any other address  which the parties may hereafter  designate by
          notice.  All notices shall be deemed to have been given as of the date
          of receipt.

          B. Entire  Agreement.  This instrument sets forth the entire agreement
          between the parties  hereto and no prior written or oral  statement or
          agreement shall be recognized or enforced.

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<PAGE>

          C. Severability.  If a court of competent jurisdiction determines that
          any clause or  provision  of this  Agreement  is  invalid,  illegal or
          unenforceable, the other clauses and provisions of the Agreement shall
          remain in full force and effect.  The clauses and provisions which the
          Court determines are void, illegal o r unenforceable  shall be limited
          so that they remain in effect to the extent permissible by law.

          D.  Assignment.  Neither party may assign this  Agreement  without the
          express  prior  written  consent of the other party.  However,  if the
          other party consents to the assignment  such  assignment will bind and
          inure to the benefit of the assignee.

          E.  Applicable  Law. This Agreement shall be construed and enforced in
          accordance with the laws of the State of Utah, the state in which this
          Agreement will be performed.

          F. Venue.  To the extent  permitted by law, the parties agree that the
          federal and local  courts in Utah shall have  exclusive  personal  and
          subject matter jurisdiction and venue for any claim or dispute between
          the  parties,  irrespective  of the  nature  or source of the claim or
          dispute.  The  parties  made this  arrangement  because:  the  parties
          mutually desire to remove uncertainty as to such matters;  one or more
          of the  parties  and their  property  are  located  in Utah;  and this
          Agreement  has been  negotiated  and executed and will be performed in
          Utah.

          G. Waiver of Jury Trial.  To the extent  permitted by law, the parties
          hereby irrevocably waive a jury trial in the event of litigation.  The
          parties  included  this  provision  because of the cost and delay of a
          jury trial and because the parties believe that a jury trial would not
          be necessary to resolve any dispute or claim between them.

          H. Attorney's  Fees. If either party  institutes legal action or other
          proceeding  (including,  but not limited to, arbitration to enforce or
          to declare any right or obligation under this Agreement or as a result
          of a breach,  default or  misrepresentation  in connection with any of
          the provisions of this  Agreement,  or otherwise  because of a dispute
          between  the  parties,  the  successful  or  prevailing  party will be
          entitled to recover reasonable  attorneys fees.  Attorney's fees shall
          include fees for appeals,  collections and other expenses  incurred in
          such action or proceeding.  Legal fees shall be awarded in addition to
          any other relief to which the prevailing party may be entitled.

          I. No Third Party Beneficiary. Nothing in this Agreement, expressed or
          implied, is intended to confer, any rights or remedies upon any person
          other than the parties hereto and their successors.

          J.  Counterparts.  The  parties  understand  and  agree  that they may
          execute this  Agreement in any number of identical  counterparts,  via
          facsimile or mail,  Each  counterpart  shall be deemed an original for
          all purposes.

          K. Further  Assurances.  At any time and from time to time,  after the
          date of this  Agreement,  each  party  will  execute  such  additional
          instruments  and take such  actions  as are  reasonably  necessary  to
          confirm or perfect  title to the Shares or  otherwise to carry out the
          intent and purposes of this Agreement.

          L. Amendment or Waiver.  Every right and remedy  provided herein shall
          be  cumulative  with every other right or remedy at law, or in equity,
          and may be enforced  concurrently  herewith. No waiver by any party of
          the performance of any obligation by the other shall be construed as a
          waiver  of the  same  or  any  other  default  then,  theretofore,  or
          thereafter occurring or existing. At

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<PAGE>

          any time prior to the Closing Date, this Agreement may be amended by a
          writing  signed  by  both  parties.  Any  term  or  condition  of this
          Agreement  may be waived  or the time for  performance  hereof  may be
          extended by a writing signed by the party or parties for whose benefit
          the provision is intended.

          M. Headings. The section and subsection headings in this Agreement are
          inserted for  convenience  only. In the event of a conflict  between a
          heading  and the text of this  Agreement,  the text shall  control the
          meaning and interpretation of this Agreement.

         IN  WITNESS  WHEREOF,  the  parties  hereto  have  executed  this Stock
         Repurchase Agreement. EXECUTED AS OF THIS 19th day of August, 1998.

                  "Premier Brands"

                  /s/ Richard Surber
                 ----------------------
                  Richard D. Surber

                  /s/ Keith R. Lipscomb
                 ----------------------
                  Keith R. Lipscomb

                                        61

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