Exhibit 3.1

                              AMENDED AND RESTATED

                          CERTIFICATE OF INCORPORATION

                                       OF

                             UNITED DIAGNOSTIC, INC.

      Pursuant to Section 242 and 245 of the Delaware  General  Corporation  Law
(the "DGCL"), the undersigned, being the President of United Diagnostic, Inc., a
Delaware corporation (the "Corporation"), hereby certifies as follows:

      1. The name of the  Corporation  is United  Diagnostic,  Inc.  The date of
filing of the  Corporation's  original  Certificate  of  Incorporation  with the
Secretary  of  State  of the  State of  Delaware  was  September  9,  1981.  The
Corporation  was  originally  incorporated  under the name "Applied DNA Systems,
Inc."

      2. This  Amended and  Restated  Certificate  of  Incorporation  amends and
restates the provisions of the Certificate of  Incorporation  of the Corporation
and has been duly adopted in accordance with the provisions of Sections 228, 242
and 245 of the  DGCL by the  Board  of  Directors  and the  stockholders  of the
Corporation.

      3. The text of the  Certificate  of  Incorporation  is hereby  amended and
restated to read in its entirety as follows:

      FIRST.  Corporate  Name.  The name of the  corporation is SPO Medical Inc.
(the "Corporation").

      SECOND.  Registered  Office.  The address of the registered  office of the
Corporation  is 1209 Orange  Street,  in the City of  Wilmington,  County of New
Castle.  The name of the registered  agent of the Corporation at such address is
The Corporation Trust Company.

      THIRD.  Corporate Purpose.  The purpose of the Corporation is to engage in
any lawful act or activity for which a  corporation  may be organized  under the
Delaware General Corporation Law, as amended from time to time (the "DGCL").

      FOURTH. Capital Stock.

      Authorized  Shares.  The total  number of shares of all  classes  of stock
which the Corporation shall have the authority to issue is 52,000,000 shares, of
which  50,000,000  shares are common stock,  par value $0.01 per share  ("Common
Stock"),  and 2,000,000  shares are preferred  stock,  par value $0.01 per share
("Preferred Stock").

      Subdivision of Shares.  Upon the effectiveness of the Amended and Restated
Certificate  of  Incorporation,  each of the  6,428,815  shares of Common  Stock
issued and outstanding as of the date hereof is hereby  subdivided into 2.652685
shares of Common Stock.

      Common  Stock.  Subject  to the prior or equal  rights of any  holders  of
Preferred  Stock,  the holders of Common  Stock shall be entitled (i) to receive
dividends  when and as  declared  by the  Board of  Directors  out of any  funds
legally available therefor, (ii) in the event of any dissolution, liquidation or
winding  up  of  the  Corporation,  to  receive  the  remaining  assets  of  the
Corporation  available  for  distribution,  ratably  according  to the number of
shares  of Common  Stock  held,  and (iii) to one vote for each  share of Common
Stock held on all  matters  submitted  to a vote of  stockholders.  No holder of
Common Stock shall have any  preemptive  right to purchase or subscribe  for any
part of any issue of stock or of securities of the Corporation  convertible into
stock of any class whatsoever,  whether now or hereafter authorized.  Holders of
Common  Stock  are  not  entitled  to  cumulate  votes  in the  election  of any
directors.

      Preferred Stock. Preferred Stock may be issued from time to time in one or
more  series,  each of such  series  to have such  terms as stated or  expressed
herein and in the  resolution  or  resolutions  providing  for the issue of such
series  adopted by the Board of  Directors  of the  Corporation  as  hereinafter
provided. Any shares of Preferred Stock that are redeemed, purchased or acquired
by the  Corporation  may be  reissued  except  as  otherwise  provided  by  law.
Different  series of  Preferred  Stock  shall  not be  construed  to  constitute
different  classes  of shares  for the  purposes  of voting  by  classes  unless
expressly provided.

      Authority is hereby expressly  granted to the Board of Directors from time
to time to issue the  Preferred  Stock in one or more series,  and in connection
with the creation of any such series, by resolution or resolutions providing for
the issuance of the shares thereof, to determine and fix the number of shares of
such series and such  designations,  preferences  and  relative,  participating,
optional  or  other  special   rights,   and   qualifications,   limitations  or
restrictions  thereof,  including  without  limitation  thereof,  voting rights,
dividend  rights,  conversion  rights,  redemption  privileges  and  liquidation
preferences,  as shall be stated and expressed in such  resolutions,  all to the
full  extent  now or  hereafter  permitted  by the DGCL.  Without  limiting  the
generality  of the  foregoing,  the  resolutions  providing  for issuance of any
series of Preferred Stock may provide that such series shall be superior or rank
equally or be junior to the  Preferred  Stock of any other  series to the extent
permitted by law.


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      The number of  authorized  shares of  Preferred  Stock may be increased or
decreased  (but  not  below  the  number  of  shares  then  outstanding)  by the
affirmative  vote of the holders of a majority  of the stock of the  Corporation
entitled to vote,  irrespective  of the  provisions of Section  242(b)(2) of the
DGCL.  Unless  otherwise  provided in such resolution or resolutions,  shares of
Preferred  Stock of such class or series  which  shall be issued and  thereafter
acquired by the Corporation through purchase,  redemption,  exchange, conversion
or otherwise  shall return to the status of  authorized  but unissued  Preferred
Stock.

      FIFTH. Board of Directors of the Corporation.

      Responsibilities.  The  business and affairs of the  Corporation  shall be
managed under the direction of the Board of Directors.

      Number.  The number of directors  shall be determined from time to time by
resolution of the Board of Directors  and the initial  Board of Directors  shall
consist of three  directors.  No decrease in the authorized  number of directors
shall shorten the term of any incumbent director.

      Elections of  Directors.  Elections  of  directors  need not be by written
ballot unless the By-Laws of the Corporation shall so provide.

      Nominations for Directors.  Except as otherwise  permitted in this Article
FIFTH,  only  persons  who are  nominated  in  accordance  with  the  procedures
established in the By-Laws shall be eligible for election as directors.

      Vacancies. Vacancies and newly created directorships resulting from (i) an
increase in the authorized number of directors,  (ii) death,  (iii) resignation,
(iv)  retirement,  (v)  disqualification,  (vi) removal from office or (vii) any
other cause, may be filled by a majority vote of the remaining directors then in
office, although less than a quorum, or by the sole remaining director, and each
director so chosen shall hold office for a term  expiring at the annual  meeting
of  stockholders  at  which  the  term of the  class to which he or she has been
elected expires and until such director's successor shall have been duly elected
and qualified.

      SIXTH.  By-Laws.  The Board of Directors is expressly authorized from time
to time to make,  alter or repeal the By-Laws of the  Corporation  in the manner
set forth in the By-Laws from time to time.

      SEVENTH. Indemnification.

      Indemnification of Authorized  Representatives in Third Party Proceedings.
The  Corporation  shall  indemnify  any  person  who  was  or is  an  authorized
representative  of the Corporation,  and who was or is a party, or is threatened
to be made a party to any  third  party  proceeding,  by reason of the fact that
such person was or is an authorized  representative of the Corporation,  against
expenses,   judgments,  fines  and  amounts  paid  in  settlement  actually  and
reasonably  incurred  by  such  person  in  connection  with  such  third  party
proceeding  if such  person  acted in good  faith  and in a manner  such  person
reasonably  believed  to be in, or not  opposed  to, the best  interests  of the
Corporation  and, with respect to any criminal  third party  proceeding,  had no
reasonable  cause to believe such conduct was unlawful.  The  termination of any
third party proceeding by judgment, order, settlement, conviction or upon a plea
of nolo contendere or its  equivalent,  shall not of itself create a presumption
that the  authorized  representative  did not act in good  faith and in a manner
which such  person  reasonably  believed  to be in or not  opposed  to, the best
interests  of the  Corporation,  or, with  respect to any  criminal  third party
proceeding, had reasonable cause to believe that such conduct was unlawful.


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      Indemnification of Authorized  Representatives  in Corporate  Proceedings.
The  Corporation  shall  indemnify  any  person  who  was  or is  an  authorized
representative  of the Corporation and who was or is a party or is threatened to
be made a party to any  corporate  proceeding,  by  reason of the fact that such
person  was  or is an  authorized  representative  of the  Corporation,  against
expenses actually and reasonably  incurred by such person in connection with the
defense or settlement of such corporate  proceeding if such person acted in good
faith and in a manner reasonably  believed to be in, or not opposed to, the best
interests of the Corporation;  provided,  however,  that,  except as provided in
this  Article   SEVENTH  with  respect  to  proceedings  to  enforce  rights  to
indemnification,  the Corporation  shall indemnify any such person in connection
with an action,  suit or proceeding  (or part thereof)  initiated by such person
only if the initiation of such action,  suit or proceeding (or part thereof) was
authorized  by the  Board  of  Directors;  provided  further,  however,  that no
indemnification  shall be made in respect  of any  claim,  issue or matter as to
which such  person  shall  have been  adjudged  to be liable to the  Corporation
unless and only to the extent  that the Court of  Chancery or the court in which
such corporate  proceeding was brought shall  determine upon  application  that,
despite the  adjudication of liability but in view of all the  circumstances  of
the case, such authorized  representative  is fairly and reasonably  entitled to
indemnity  for such  expenses  which the Court of  Chancery  or such other court
shall deem proper.

      Mandatory  Indemnification  of Authorized  Representatives.  To the extent
that an authorized  representative or other employee or agent of the Corporation
has been  successful on the merits or otherwise in defense of any third party or
corporate  proceeding or in defense of any claim, issue or matter therein,  such
person shall be indemnified against expenses actually and reasonably incurred by
such person in connection therewith.

      Determination of Entitlement to Indemnification. Any indemnification under
this  Article  SEVENTH  (unless  ordered  by a  court)  shall  be  made  by  the
Corporation  only as authorized in the specific case upon a  determination  that
indemnification  of the authorized  representative or other employee or agent is
proper under the circumstances because such person has either met the applicable
standard  of conduct  set forth in this  Article or has been  successful  on the
merits or otherwise as set forth in this  Article,  as the case may be, and that
the  amount   requested  has  been  actually  and  reasonably   incurred.   Such
determination shall be made:

      (i) by the Board of Directors by a majority vote of a quorum consisting of
directors who were not parties to such third party or corporate proceeding; or

      (ii) if such a quorum is not obtainable,  or even if obtainable,  a quorum
of disinterested directors so directs, by independent legal counsel in a written
opinion; or

      (iii) by the stockholders.

      Advancing Expenses. Expenses actually and reasonably incurred in defending
a third party or corporate  proceeding  shall be paid on behalf of an authorized
representative  by the  Corporation in advance of the final  disposition of such
third  party or  corporate  proceeding  and  within  30 days of  receipt  by the
secretary  of the  Corporation  of  (i)  an  application  from  such  authorized
representative  setting  forth the basis for such  indemnification,  and (ii) if
required by law at the time such  application  is made, an  undertaking by or on
behalf  of the  authorized  representative  to  repay  such  amount  if it shall
ultimately be determined that the authorized  representative  is not entitled to
be indemnified by the  Corporation  as authorized in this Article  SEVENTH.  The
financial  ability  of  any  authorized   representative  to  make  a  repayment
contemplated  by this section  shall not be a  prerequisite  to the making of an
advance.  Expenses  incurred by other  employees  and agents may be so paid upon
such terms and conditions, if any, as the Board of Directors deems appropriate.

      Definitions. For purposes of this Article SEVENTH:

      "authorized  representative" shall mean any and all directors and officers
of the Corporation and any person designated as an authorized  representative by
the Board of Directors of the  Corporation or any officer of the  Corporation to
whom the Board has  delegated  the  authority to make such  designations  (which
"authorized representative" may, but need not, include any person serving at the
request of the Corporation as a director, officer, employee, trustee or agent of
another corporation, partnership, joint venture, trust or other enterprise);

      "Corporation" shall include, in addition to the resulting corporation, any
constituent corporation (including any constituent of a constituent) absorbed in
a consolidation or merger which, if its separate existence had continued,  would
have had power and authority to indemnify its directors,  officers, employees or
agents, so that any person who is or was a director,  officer, employee or agent
of such  constituent  corporation,  or is or was  serving at the request of such
constituent  corporation  as a director,  officer,  employee or agent of another
corporation,  partnership, joint venture, trust or other enterprise, shall stand
in the same  position  under the  provisions of this Article with respect to the
resulting  or  surviving  corporation  as such person would have with respect to
such constituent corporation if its separate existence had continued;

      "corporate  proceeding"  shall mean any  threatened,  pending or completed
action or suit by or in the right of the  Corporation  to procure a judgment  in
its favor and any investigative proceeding by the Corporation;

      "criminal   third   party   proceeding"   shall   include  any  action  or
investigation which could or does lead to a criminal third party proceeding;

      "expenses" shall include attorneys' fees and disbursements;

      "fines" shall  include any excise taxes  assessed on a person with respect
to an employee benefit plan;

      actions  "not  opposed to the best  interests  of the  Corporation"  shall
include  without  limitation  actions  taken in good  faith and in a manner  the
authorized  representative  reasonably  believed  to be in the  interest  of the
participants and beneficiaries of an employee benefit plan;

      "other enterprises" shall include employee benefit plans;


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      "party" shall include the giving of testimony or similar involvement;

      "serving  at  the  request  of  the  Corporation"  shall  include  without
limitation  any  service as a director,  officer or employee of the  Corporation
which  imposes  duties on, or involves  services by, such  director,  officer or
employee  with  respect  to an  employee  benefit  plan,  its  participants,  or
beneficiaries; and

      "third party proceeding"  shall mean any threatened,  pending or completed
action,  suit  or  proceeding,  whether  civil,  criminal,   administrative,  or
investigative, other than an action by or in the right of the Corporation.

      Insurance.  The Corporation may purchase and maintain  insurance on behalf
of any  person  who is or was a  director,  officer,  employee  or  agent of the
Corporation,  or is or was  serving  at the  request  of  the  Corporation  as a
director, officer, employee or agent of another corporation,  partnership, joint
venture,  trust or other enterprise  against any liability  asserted against the
person and incurred by the person in any such capacity, or arising out of his or
her status as such,  whether or not the Corporation  would have the power or the
obligation to indemnify such person against such liability  under the provisions
of this Article SEVENTH.

      Scope of Article.  The  indemnification of authorized  representatives and
advancement  of expenses,  as  authorized  by the  preceding  provisions of this
Article  SEVENTH,  shall not be deemed  exclusive  of any other  rights to which
those seeking  indemnification  or advancement of expenses may be entitled under
any agreement,  vote of  stockholders or  disinterested  directors or otherwise,
both as to action in an official  capacity and as to action in another  capacity
while  holding such office.  The  indemnification  and  advancement  of expenses
provided by or granted pursuant to this Article SEVENTH shall,  unless otherwise
provided when authorized or ratified,  continue as to a person who has ceased to
be an  authorized  representative  and shall  inure to the benefit of the heirs,
executors and administrators of such a person.

      Reliance  on  Provisions.  Each  person  who  shall  act as an  authorized
representative  of the  Corporation  shall be deemed to be doing so in  reliance
upon rights of indemnification  provided by this Article SEVENTH.  Any repeal or
modification  of the provisions of this Article  SEVENTH by the  stockholders of
the  Corporation  shall not adversely  affect any right or benefit of a director
existing at the time of such repeal or modification.

      Severability.  If this  Article  SEVENTH or any portion  thereof  shall be
invalidated  on any  ground by any  court of  competent  jurisdiction,  then the
Corporation shall nevertheless  indemnify each authorized  representative of the
Corporation as to expenses, judgments, fines and amounts paid in settlement with
respect  to  any  action,   suit  or  proceeding,   whether   civil,   criminal,
administrative or investigative,  including,  without  limitation,  a grand jury
proceeding  and  an  action,  suit  or  proceeding  by or in  the  right  of the
Corporation,  to the fullest extent permitted by any applicable  portion of this
Article  SEVENTH  that  shall not have been  invalidated,  by the DGCL or by any
other applicable law.

      EIGHTH.  Directors'  Liability.  No director shall be personally liable to
the  Corporation  or its  stockholders  for  monetary  damages  for  breach of a
fiduciary duty as a director;  provided, however, that to the extent required by
the provisions of Section 102(b)(7) of the DGCL or any successor statute, or any
other laws of the State of Delaware, this provision shall not eliminate or limit
the liability of a director (i) for any breach of the director's duty of loyalty
to the Corporation or its  stockholders,  (ii) for acts or omissions not in good
faith or which involve  intentional  misconduct  or a knowing  violation of law,
(iii) under Section 174 of the DGCL or (iv) for any  transaction  from which the
director derived an improper personal benefit.  If the DGCL hereafter is amended
to  authorize  the  further  elimination  or  limitation  of  the  liability  of
directors,  then the liability of a director of the Corporation,  in addition to
the limitation on personal  liability  provided herein,  shall be limited to the
fullest extent permitted by the amended DGCL. Any repeal or modification of this
Article EIGHTH by the stockholders of the Corporation shall be prospective only,
and shall not adversely  affect any  limitation  on the personal  liability of a
director  of  the  Corporation  existing  as of  the  time  of  such  repeal  or
modification.

      NINTH.  Amendments.  The Corporation  reserves the right to amend,  alter,
change or repeal any provision  contained in this certificate of  incorporation,
in the manner now or hereafter  prescribed by statute,  and all rights conferred
upon stockholders herein are granted subject to this reservation.

      IN WITNESS  WHEREOF,  the undersigned has caused this Amended and Restated
Certificate of Incorporation to be executed as of this 21st day of April, 2005.

                                          /s/ Michael Braunold
                                          --------------------------
                                          Name: Michael Braunold
                                          Title: President Director


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