NATIONAL HEALTH LABORATORIES INC
SC 13D, 1995-05-09
TESTING LABORATORIES
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549


                                 SCHEDULE 13D
               Under the Securities Exchange Act of 1934(1)
                             (Amendment No.     )

                  LABORATORY CORPORATION OF AMERICA HOLDINGS
             (formerly National Health Laboratories Holdings Inc.)

                               (Name of Issuer)

                                 Common Stock,
                                $0.01 Par Value

                        (Title of Class of Securities)

                                  5054OR 10 2

                                (CUSIP Number)

                            Peter R. Douglas, Esq.
                             Davis Polk & Wardwell
                             450 Lexington Avenue
                              New York, NY  10017
                           Tel. No.:  (212) 450-4000

           (Name, Address and Telephone Number of Person Authorized
                    to Receive Notices and Communications)

                                April 28, 1995

            (Date of Event which Requires Filing of this Statement)

         If the filing person has previously filed a statement on Schedule 13G
to report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the following
box .

         Check the following box if a fee is being paid with this statement.
  (A fee is not required only if the reporting person: (1) has a previous
statement on file reporting beneficial ownership of more than five percent of
the class of securities described in Item 1; and (2) has filed no amendment
subsequent thereto reporting beneficial ownership of less than five percent of
such class.)  (See Rule 13d-7.)

               Note:  Six copies of this statement, including all exhibits,
   should be filed with the Commission.  See Rule 13d-1(a) for other parties
   to whom copies are to be sent.

                        (Continued on following pages)






______________
  (1)  The remainder of this cover page should be filled out for a
  reporting person's initial filing on this form with respect to the
  subject class of securities, and for any subsequent amendment containing
  information which would alter disclosures provided in a prior cover page.

         The information required on the remainder of this cover page shall
not be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).

                                    13D

CUSIP No. 5054OR 10 2                                            Page


____________________________________________________________________________
      (1)   Names of Reporting Persons
            S.S. or I.R.S. Identification Nos. of Above Persons

            Roche Holdings, Inc.
            51-0304944

____________________________________________________________________________
      (2)   Check the Appropriate Box if a Member of a Group            (a)
                                                                        (b)

____________________________________________________________________________
      (3)   SEC Use Only


____________________________________________________________________________
      (4)   Source of Funds

            WC

____________________________________________________________________________
      (5)   Check if Disclosure of Legal Proceedings is Required Pursuant to
            Items 2(d) or 2(e)


____________________________________________________________________________
      (6)   Citizenship or Place of Organization

            Delaware, United States of America

____________________________________________________________________________
Number of       (7)   Sole Voting Power            61,329,256 shares of Common
                                                     Stock*
Shares
Beneficially    (8)   Shared Voting Power          0 shares
Owned by
Each            (9)   Sole Dispositive Power       61,329,256 shares of Common
Reporting                                            Stock*

Person with     (10)  Shared Dispositive Power     0 shares

                               *See response to Item 5 below.
____________________________________________________________________________
      (11)  Aggregate Amount Beneficially Owned by Each Reporting Person

            61,329,256 shares Common Stock


____________________________________________________________________________
      (12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares


____________________________________________________________________________
      (13)  Percent of Class Represented by Amount in Row (11)

            49.9% of Common Stock

____________________________________________________________________________
      (14)  Type of Reporting Person (See Instructions)

            CO, HC

Item 1.  Security and Issuer.

         This statement relates to the Common Stock, par value $0.01 per share
(the "Common Stock"), of Laboratory Corporation of America Holdings (formerly
named National Health Laboratories Holdings Inc.), a Delaware corporation (the
"Company").

         The address of the principal executive office of the Company is 358
South Main Street, Burlington, North Carolina 27215.


Item 2.  Identity and Background.

         This statement is being filed on behalf of Roche Holdings, Inc., a
Delaware corporation ("Holdings") and a wholly-owned subsidiary of Roche
Finance Ltd, a Swiss corporation ("Finance") which is in turn a wholly owned
subsidiary of Roche Holding Ltd, a Swiss corporation ("Roche Holding").  Dr.
h.c. Paul Sacher, an individual and citizen of Switzerland ("Dr. Sacher") has,
pursuant to an agreement, the power to vote a majority of the voting
securities of Roche Holding.  Holdings owns all of the outstanding stock of
Hoffmann-La Roche Inc., a New Jersey corporation, ("Roche"), which in turn
owns all of the outstanding stock of HLR Holdings Inc., a Delaware corporation
("HLR").  HLR, Roche, Holdings, Finance, Roche Holding and Dr. Sacher are
referred to collectively herein as the "Reporting Persons".

         HLR operates solely as a holding company for the diagnostics and
certain other subsidiaries of Roche.  HLR was incorporated on November 30,
1989.  The address of the principal office of HLR is 1403 Foulk Road, Suite
102, P.O. Box 8985, Wilmington, Delaware 19899.

         Roche is one of several United States operating subsidiaries of
Holdings.  In addition to the business units operated by subsidiaries held
through HLR, Roche's principal business units also include Roche
Pharmaceuticals and Roche Vitamins and Fine Chemicals.  Roche was incorporated
in 1928.  The address of the principal office of Roche is 340 Kingsland
Street, Nutley, New Jersey 07110.

         Through its subsidiaries, Holdings has been active in the United
States since 1905 and has more than 16,000 employees and substantial research
and manufacturing facilities in this country.  In addition to the business
units operated through Roche, Holdings is also engaged in the biotechnology
business through Genentech, Inc., a Delaware corporation and approximately 65%
owned subsidiary of Holdings, the flavors and fragrances business through
Givaudan-Roure Corporation, a New Jersey corporation and wholly-owned
subsidiary of Holdings, and the pharmaceutical product business through Syntex
(U.S.A.) Inc., a Delaware corporation and wholly-owned subsidiary of Holdings.
Holdings was organized in Delaware in 1987 to act as a holding company for
substantially all of Roche Holding's United States operations.  The address of
the principal office of Holdings is 15 East North Street, Dover, Delaware
19901.

         Finance is a holding company having participations in various
subsidiaries of Roche Holding.  Finance was incorporated in 1971 in Basel,
Switzerland, under the name Roche Chemie AG and assumed its present name in
July 1989.  The address of the principal office of Finance is
Grenzacherstrasse 124, 4002 Basel, Switzerland.

         Roche Holding is the parent company of an international health care
concern operating in more than 100 countries and employing approximately
60,000 people worldwide.  Roche Holding assumed its present name in June 1989
following a restructuring which established Roche Holding solely as a holding
company and transferred operating businesses and related assets and
liabilities to a newly established operating subsidiary, F. Hoffmann-La Roche
Ltd.

         Roche Holding, including through its subsidiaries (collectively, the
"Roche Group"), engages primarily in the development and manufacture of
pharmaceuticals, vitamins and fine chemicals, diagnostics, flavors and
fragrances and in the business of analytical laboratory services.  The Roche
Group is one of the world's leading research-based health care groups active
in the discovery, development, manufacture and marketing of pharmaceuticals
and diagnostic systems.  The Roche Group is also one of the world's largest
producers of vitamins and carotenoids and of fragrances and flavors.  Roche
Holding was incorporated in 1896 in Basel, Switzerland, under the name F.
Hoffmann-La Roche and Co.  The address of the principal office of Roche
Holding is Grenzacherstrasse 124, 4002 Basel, Switzerland.

         Dr. Sacher is a director of Holding and an orchestral conductor.  The
business address of Dr. Sacher is Haus auf Burg, Muensterplatz 4, 4051 Basel,
Switzerland.

         The executive officers and directors of HLR, Roche, Holdings, Finance
and Roche Holding are listed on Schedules A, B, C, D and E, respectively,
attached hereto and incorporated by reference herein.

         None of the Reporting Persons nor any other person controlling any of
the Reporting Persons, nor, to the best knowledge of the Reporting Persons,
any of the persons named in Schedules A, B, C, D and E attached hereto has,
during the last five years, been convicted in any criminal proceeding
(excluding traffic violations or similar misdemeanors).  None of the Reporting
Persons nor any other person controlling any of the Reporting Persons, nor, to
the best knowledge of the Reporting Persons, any of the persons named in
Schedules A, B, C, D and E attached hereto has, during the last five years,
been a party to a civil proceeding of a judicial or administrative body of
competent jurisdiction and as a result of such proceeding was or is subject to
a judgment, order, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to, Federal or State securities
laws or finding any violations with respect to such laws.


Item 3.  Source and Amount of Funds or Other Consideration.

         Pursuant to the Merger Agreement described in Item 4 below, at the
Effective Time (as defined in Item 4 below) HLR received 49,008,538 shares of
Common Stock and (in accordance with an agency agreement with HLR) Holdings
received 12,320,718 shares of Common Stock.  The total of 61,329,256 shares of
Common Stock acquired by the Reporting Persons collectively (the "Roche
Shares") represents, in the aggregate, approximately 49.9% of the outstanding
Common Stock, based upon the Company's estimate of the number of outstanding
shares as of April 28, 1995, immediately after the Merger (as described in
Item 4 below).  The Roche Shares were issued pursuant to the Merger Agreement
through (i) a conversion of all of the outstanding shares of common stock, no
par value per share, of Roche Biomedical Laboratories, Inc. ("RBL"), a New
Jersey corporation which, prior to the Merger, was a wholly-owned subsidiary
of HLR, into Common Stock at the Effective Time and (ii) the payment by HLR
(with funds provided by Holdings pursuant to an agency agreement as referred
to below) of an aggregate of $135,651,100 (the "HLR Cash Consideration").  The
HLR Cash Consideration was financed from working capital of Holdings
(including funds from general purpose financing obtained by Holdings) and paid
by HLR on behalf of Holdings pursuant to an agency agreement dated as of April
27, 1995.

         In addition, pursuant to the Merger Agreement, on April 28, 1995,
the effective date of the Merger (the "Effective Date")  Roche purchased
from the Company, for an aggregate purchase price of $51,048,900 (the
"Roche Warrant Consideration"), 8,325,000 warrants to purchase shares of
Common Stock (the "Roche Warrants").  The principal terms of such Roche
Warrants are set forth in the Warrant Agreement described in Item 4 below.
The Roche Warrant Consideration was financed from working capital of Roche
(including funds provided from general purpose financing obtained by
Roche).


Item 4.  Purpose of Transaction.

         The acquisition of the Common Stock, including the Roche Shares, and
the Roche Warrants referred to in Item 3 above was made pursuant to an
Agreement and Plan of Merger dated as of December 13, 1994 among the Company,
HLR, RBL and (for the purposes stated therein) Roche (the "Merger Agreement").
The Merger Agreement provided that, following the approval and adoption of the
Merger Agreement by the stockholders of the Company and the satisfaction or
waiver of the other conditions to the Merger (i) RBL would be merged with and
into the Company (with the Company being the surviving corporation) (the
"Merger"), (ii) each outstanding share of Common Stock (other than shares of
Common Stock owned by RBL or HLR and other than certain shares of Common Stock
owned by stockholders who properly exercise their appraisal rights under
Delaware law) would be converted into (A) 0.72 of a share of Common stock and
(B) the right to receive $5.60 in cash, without interest (the "Cash
Consideration"), and (iii) all shares of common stock, no par value, of RBL
outstanding immediately prior to the Effective Time (other than treasury
shares, which would be cancelled) would be converted into, and become, that
number of newly issued shares of Common Stock as would, in the aggregate and
after giving effect to the Merger and the Common Stock owned by HLR and RBL
and their subsidiaries immediately prior to the Effective Time, equal 49.9% of
the total number of shares of Common Stock outstanding immediately after the
Effective Time (after giving effect to the  issuance of Common Stock in
respect of certain Company employee stock options in connection with the
Merger, as described in the Merger Agreement).  A copy of the Merger Agreement
is attached as Exhibit 1 hereto and is hereby incorporated herein by
reference, and the description herein of the terms of such agreement is
qualified in its entirety by reference to such Exhibit.

         On April 28, 1995, at a special meeting of stockholders of the
Company, the Company's stockholders voted to approve and adopt the Merger
Agreement and to amend the Company's certificate of incorporation to change
the name of the Company from National Health Laboratories Holdings Inc. to
Laboratory Corporation of America Holdings.  Later on the Effective Date, a
certificate of merger was filed with each of the Secretary of State of the
State of Delaware and the Secretary of the State of the State of New Jersey,
and the Merger was consummated (the "Effective Time"), and the Roche Shares
and the Roche Warrants were issued to the Reporting Persons as referred to in
Item 3 above.

         In connection with the Merger, the Company declared a dividend,
payable to holders of record of shares of the Company Common Stock as of April
21, 1995, which dividend consisted of 0.16308 of a warrant per outstanding
share of Common Stock, each such warrant (a "Warrant" and, together with the
Roche Warrants, the "Warrants") representing the right to purchase one newly
issued share of Common Stock for $22.00 (subject to adjustments as provided in
the Warrant Agreement) on April 28, 2000 (the "Expiration Date").  In
addition, pursuant to the Merger Agreement, on April 28, 1995 Roche purchased
and was issued the Roche Warrants for the Roche Warrant Consideration.  The
terms of the Warrants (including the Roche Warrants) are set forth in the
Warrant Agreement (the "Warrant Agreement") dated as of April 10, 1995,
between the Company and American Stock Transfer & Trust Company (the "Warrant
Agent").  Pursuant to the Warrant Agreement, the Company has the right,
exercisable by notice at least 60 but not more than 90 days prior to the
Expiration Date, to redeem the Warrants on the Expiration Date for a cash
redemption price per Warrant equal to the average closing price of the shares
of the Common Stock over a specified period prior to the Expiration Date minus
the exercise price of $22.00 per share (subject to  adjustments).  A copy of
the Warrant Agreement is attached as Exhibit 2 hereto and is hereby
incorporated herein by reference, and the description herein of the terms of
such agreement is qualified in its entirety by reference to such Exhibit.

         In connection with the Merger, the Company, HLR, Roche and Holdings
entered into a stockholder agreement dated as of April 28, 1995 (the
"Stockholder Agreement") which sets forth, among other things, certain
agreements and understandings regarding the governance of the Company
following the Merger, including but not limited to the composition of the
Board of Directors.  The Stockholder Agreement also contains certain
provisions relating to the issuance, sale and transfer of the Company's Equity
Securities (as defined in the Stockholder Agreement) by the Company, HLR and
Holdings (for the purposes of the Stockholder Agreement, HLR and Holdings are
collectively referred to herein as the "Investor"), the acquisition of
additional Equity Securities of the Company by the Investor and the
registration rights granted by the Company to the Investor and its affiliates
(other than the Company and its subsidiaries) (the "Investor Group") with
respect to the Company's Equity Securities, which provisions are described
under Item 6 below and which description is incorporated herein by reference.
A copy of the Stockholder Agreement is attached as Exhibit 3 hereto and is
hereby incorporated herein by reference, and the description herein of the
terms of such agreement is qualified in its entirety by reference to such
Exhibit.

         Pursuant to the Stockholder Agreement (subject to the exceptions
provided therein), for a period of one year after the Effective Date (the
"Initial Period") the Board of Directors of the Company will be comprised of
seven members, consisting of James R. Maher, three designees of the Investor
(each an "Investor Director"), who are Jean-Luc Belingard (the Director
General, Diagnostics Division and Executive Committee Member of F. Hoffmann-La
Roche Ltd), Thomas P. Mac Mahon (a Senior Vice President of Roche and the
President of Roche Diagnostics Group) and Dr. James B. Powell (former
President of RBL who is the President and Chief Executive Officer of the
Company), and three Independent Directors (as defined in the Stockholder
Agreement, which provides in general that such persons shall not be officers,
employees or affiliates of the Company or the Investor).  The Stockholder
Agreement provides that these Independent Directors were required to be
mutually acceptable to a majority of the members of the Company's Board of
Directors in office immediately prior to the Effective Time and to the
Investor.  Following the Initial Period, the Board of Directors of the Company
will (subject to specified exceptions described in the Stockholder Agreement)
be comprised of seven members, consisting of three Investor Directors and four
Independent Directors selected by the Nominating Committee of the Board of
Directors.  Consistent with the Stockholder Agreement, Mr. Maher has been
elected by the Board of Directors to serve as the Chairman of the Board of the
Company and Mr. Mac Mahon has been elected to serve as the Vice Chairman of
the Board of the Company for the Initial Period.

         The Stockholder Agreement provides that, if the percentage (the
"Investor Group Interest") of the aggregate number of votes entitled to be
voted in an election of directors of the Company by all outstanding securities
having the right to vote generally in any election of Directors of the Company
("Total Voting Power") that is controlled directly or indirectly by the
Investor Group is less than 30% but at least 20%, the Investor will have the
right to designate for nomination two Investor Directors, and if the Investor
Group Interest is less than 20% but at least 10%, the Investor will have the
right to designate for nomination one Investor Director.

         The Stockholder Agreement provides that the Board of Directors of the
Company will establish, empower, maintain and elect the members of the
following committees of the Board of Directors: (i) an Audit Committee,
comprised solely of Independent Directors, (ii) a Nominating Committee, which
will be comprised of one Investor Director (designated by the majority of
Investor Directors), and two Independent Directors (designated by the majority
of Independent Directors), (iii) an Employee Benefits Committee, comprised of
Investor Directors and Independent Directors (with the Independent Directors
constituting a majority) and (iv) such other committees as the Board of
Directors deems necessary or desirable to establish, empower and maintain,
provided that such committees are approved by a majority of the Board of
Directors, which majority includes approval by a majority of the Investor
Directors and at least one Independent Director (a "Special Majority of the
Board").

         Except as otherwise provided in the Stockholder Agreement or as
agreed by a majority of the Independent Directors and the Investor Directors,
the number of Investor Directors serving on each committee of the Board of
Directors will be the same proportion of the total membership of such
committee as the number of Investor Directors is of the entire Board of
Directors, with a minimum of one member so long as the Investor is entitled
under the Stockholder Agreement to designate one Investor Director.
Notwithstanding the previous sentence, if the Investor Group Interest is less
than 30% but more than 20%, the number of Investor Directors serving on each
committee of the Board of Directors (other than the Audit Committee) will be
two, if such committee has five or more total members, or one, in all other
cases.  If the Investor Group interest is less than 20% but more than 10%, the
number of Investor Directors serving on each committee of the Board of
Directors (other than the Audit Committee) will be one.

         The Stockholder Agreement provides that, so long as the Investor
Group Interest is 30% or more, no action by the Company or any of its
subsidiaries will be taken with respect to any of the following matters
without the approval of a Special Majority of the Board: (i) the appointment
of any of the Chairman of the Board, Chief Executive Officer, President,
Secretary, Treasurer, Chief Administration Officer, General Counsel, Chief
Financial Officer or Chief Operating Officer or other executive officer in any
similar capacity of the Company or any of its subsidiaries, (ii) the approval
of Strategic Plans and Annual Operating Plans (referred to below), (iii) any
merger or consolidation of the Company or any of its subsidiaries with or into
any Person (as defined in the Stockholder Agreement) other than the Company or
any of its subsidiaries, (iv) any amendment to the certificate of
incorporation or the bylaws of the Company or any adoption of, or amendment
to, the certificate of incorporation or the bylaws of any subsidiary of the
Company, (v) any acquisition of assets, business, operations or securities by
the Company or any of its subsidiaries by merger or otherwise (whether in one
transaction or a series of related transactions) which assets, business,
operations or securities would constitute more than 10% of the fair market
value of the total assets of the Company and its subsidiaries as of the end of
the most recent fiscal quarter ending prior to such transaction (a
"Substantial Part" of the Company), (vi) any sale, asset exchange, lease,
exchange, mortgage, pledge, transfer or other disposition by merger or
otherwise by the Company or any of its subsidiaries (in one transaction or a
series of related transactions) of any of the subsidiaries or assets of the
Company or any of its subsidiaries which constitutes a Substantial Part of the
Company, (vii) the settling of any litigation, investigation or proceeding
involving any governmental authority or where the amount to be paid in
settlement is in excess of $5,000,000, (viii) any material transaction between
the Company or any of its subsidiaries, on the one hand, and any stockholder
or affiliate of the Company (other than any subsidiary of the Company and
other than the Investor and its affiliates), on the other hand (other than as
specifically contemplated by the Sharing and Call Option Agreement (as
described in Item 6 below), (ix) the issuance of any security of the Company
or of any security of any subsidiary of the Company (other than as
specifically contemplated by the Merger Agreement, the Warrants or existing
employee stock options), (x) any capital expenditures individually in excess
of $1,000,000 or in the aggregate in excess of $50,000,000 per annum or which
represent in the aggregate 110% or more of the total amount provided for in
certain plans for such year, (xi) any reclassification, recombination, split,
subdivision or redemption, purchase or other acquisition, directly or
indirectly, of any debt or Equity Securities (as defined in Item 6 below) or
other capital stock of the Company, except as provided in the Merger Agreement
and the Warrants, (xii) any change in the size or composition of the Board of
Directors, any committee thereof or the Management Committee (established in
accordance with the Stockholder Agreement) or any establishment of a new
committee of the Board, (xiii) any incurrence, assumption or issuance by the
Company or any of its subsidiaries of indebtedness other than indebtedness
existing immediately after the Effective Time and any refinancings thereof and
other indebtedness in an aggregate principal amount at any one time
outstanding not to exceed $25,000,000, (xiv) any declaration of any dividend
or any making of any other distribution with respect to, or any redemption,
repurchase or other acquisition of, any class of securities of the Company or
any of its subsidiaries, except as expressly otherwise provided in the Merger
Agreement or pursuant to the Warrants, (xv) any proposal, or entry into, by
the Company or any of its subsidiaries of any Discriminatory Transaction (as
defined in the Stockholder Agreement), (xvi) any relocation of the
headquarters of the Company, (xvii) any determination of compensation,
benefits, perquisites and other incentives for executive officers (other than
officers whose total compensation including employee stock options and similar
incentives does not exceed $150,000 annually) and any approval or amendment of
any plans or contracts in connection therewith, (xviii) any adoption or
implementation of any takeover defense measures, including the institution,
amendment or redemption by the Company or any of its subsidiaries of any
stockholder rights plan or similar plan or device, or any change of control
matters, (xix) any transaction involving, or any action by, the Company or any
of its subsidiaries (A) leading to a circumstance in which any Person or 13D
Group (as defined in the Stockholder Agreement) representing a percentage of
Total Voting Power or any equity interest in the Company greater than 15% or
(B) requiring the approval of holders of a majority of the securities having
the right to vote generally in any election of Directors of the Company or
Equity Securities and (xx) any change in the fiscal year or the accounting or
tax principles, or policies with respect to the financial statements, records
or affairs of the Company or any of its subsidiaries, except as required by
GAAP (as defined in the Stockholder Agreement) or by law or (xxi) any
dissolution of the Company or any of its subsidiaries, any adoption of a plan
of liquidation of the Company of any of its subsidiaries or any action by the
Company or any of its subsidiaries to commence any suit, case, proceeding or
other action (A) under any existing or future law of any jurisdiction relating
to bankruptcy, insolvency, reorganization or relief of debtors seeking to have
an order for relief entered with respect to the Company or any of its
subsidiaries, seeking to adjudicate the Company or any of its subsidiaries
bankrupt or insolvent or seeking reorganization, arrangement, adjustment,
winding up, liquidation, dissolution, composition or other relief with respect
to the Company or any of its subsidiaries or (B) seeking appointment of a
receiver, trustee, custodian or other similar official for the Company or any
of its subsidiaries or for all or any Substantial Part of the Company or any
of its subsidiaries or making a general assignment for the benefit of the
creditors of the Company or any of its subsidiaries.  The Stockholder
Agreement also requires that the Annual Operating Plans and the Strategic
Plans (each as defined in the Stockholder Agreement) be approved by a Special
Majority of the Board of Directors.

         The purpose of HLR, Roche and Holdings in effecting the Merger and
acquiring the Roche Shares was to acquire a substantial equity interest in the
Company and the benefits of the Stockholder Agreement and the Sharing and Call
Option Agreement (referred to in Item 6 below).

         The Reporting Persons intend to review continually the Company's
business affairs and financial condition, as well as conditions in the
securities markets and general economic and industry conditions.  Based on an
evaluation of these and other similar considerations and as consistent with
the Stockholder Agreement, the Reporting Persons will continue to consider
various alternative courses of action and will in the future take such actions
with respect to the Company as each of them deems appropriate in light of the
circumstances existing from time to time.

         Except as set forth herein, none of the Reporting Persons nor any
other person controlling the Reporting Persons, nor, to the best of the
knowledge of any of the Reporting Persons, any person named in Schedules A,
B, C, D and E attached hereto currently has any plans or proposals which
relate to or would result in (i) the acquisition by any person of
additional securities of the Company, or the disposition of securities of
the Company;  (ii) an extraordinary corporate transaction, such as a
merger, reorganization or liquidation involving the Company or any of its
subsidiaries;  (iii) a sale or transfer of a material amount of assets of
the Company or any of its subsidiaries;  (iv) any change in the present
Board of Directors or management of the Company;  (v) any material change
in the present capitalization or dividend policy of the Company;  (vi) any
other material change in the Company's business or corporate structure;
(vii) changes in the Company's charter, bylaws or instruments corresponding
thereto or other actions which may impede the acquisition of control of the
Company by any person;  (viii) causing the Common Stock to cease to be
authorized to be quoted on the New York Stock Exchange;  (ix) the Common
Stock becoming eligible for termination of registration pursuant to Section
12(g)(4) of the Exchange Act; or (x) any action similar to any of those
enumerated in this paragraph.


Item 5.  Interest in Securities of the Issuer.

         (a) According to information provided by the Company, the Reporting
Persons believe that giving effect to the Merger and the transactions
contemplated by the Merger Agreement there were 122,904,323 shares of Common
Stock outstanding immediately after the Effective Time on the Effective Date.
In the Merger, HLR acquired 49,008,538 shares of Common Stock and Holdings
acquired 12,320,718 shares of Common Stock.  Based upon information provided
by the Company, the Reporting Persons believe that the Roche Shares represent
approximately 49.9% of the Common Stock estimated to be outstanding after the
Effective Time on the Effective Date.  The Roche Shares owned by HLR may be
deemed, for purposes of Rule 13d-3, to be beneficially owned by Roche,
Holdings, Finance, Roche Holding and Dr. Sacher.  The Roche Shares owned by
Holdings may be deemed, for the purposes of Rule 13d-3, to be beneficially
owned by Finance, Roche Holding and Dr. Sacher.  Each of HLR and Holdings have
the sole power to vote and dispose of the Roche Shares held by it,
respectively.

         In addition, Roche is the beneficial owner of the Roche Warrants.
The Roche Warrants owned by Roche may be deemed, for the purposes of Rule
13d-3, to be beneficially owned by Holdings, Finance, Roche Holding and Dr.
Sacher.  The Roche Warrants are not exercisable until April 28, 2000, and the
Reporting Persons disclaim beneficial ownership of the shares of Common Stock
issuable upon exercise of the Roche Warrants.

         To the best of the knowledge of the Reporting Persons, the number of
shares of Common Stock beneficially owned by the persons named in Schedules A,
B, C, D and E hereto (beneficial ownership of which shares is disclaimed by
the Reporting Persons) is set forth below:

                                          No. of Shares of Common Stock
         Individual                       Beneficially Owned
         __________                       _____________________________

         Patrick J. Zenner                3,000 (owned jointly)
         (President and Chief Executive
         Officer of Roche)

         George W. Johnston               600
         (Assistant Secretary of Roche)

         William H. Epstein               1,400
         (Assistant Secretary of Roche)

         Except as set forth herein, neither the Reporting Persons nor any
other person controlling the Reporting Persons nor, to the best of the
knowledge of the Reporting Persons, any of the persons named in Schedules A,
B, C, D and E hereto beneficially owns any shares of Common Stock.

         (b) Except as otherwise described herein, neither the Reporting
Persons nor any other person controlling the Reporting Persons nor, to the
best of the knowledge of the Reporting Persons, any of the persons named in
Schedules A, B, C, D and E hereto has any sole or shared power to vote or
direct the vote of any shares of Common Stock nor sole or shared power to
dispose of or direct the disposition of any shares of Common Stock.

         (c) Except as set forth herein, no transactions in the Common Stock
have been effected during the past 60 days by the Reporting Persons, any other
person controlling any of the Reporting Persons or, to the best of the
knowledge of the Reporting Persons, any of the persons named in Schedules A,
B, C, D and E hereto, except that, as described in paragraph (a) above of this
Item 5, the Reporting Persons have been informed that on May 2, 1995, Mr.
Zenner jointly with his wife acquired 3,000 shares of Common Stock for a
purchase price per share of $12.75 on the New York Stock Exchange, Inc. (the
"NYSE"), on April 28, 1995, Mr. Johnston acquired 600 shares of Common Stock
for a purchase price per share of $14.875 on the NYSE and on April 28, 1995,
Mr. Epstein acquired 1,400 shares of Common Stock for a purchase price per
share of $14.75 on the NYSE.

         (d) Inapplicable.

         (e) Inapplicable.


Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect
         to Securities of the Issuer.

         The information contained in Item 4 above is hereby incorporated by
reference herein.

         In addition to the provisions of the Stockholder Agreement described
above in Item 4, the Stockholder Agreement prohibits, subject to certain
exceptions, the Company from issuing, selling or transferring any (i) Common
Stock or other voting stock of the Company, (ii) any debt or equity securities
of the Company convertible or exchangeable for Common Stock or voting stock of
the Company or (iii) any options, rights or warrants issued by the Company to
acquire Common Stock or other voting stock of the Company ("Equity
Securities") to any person, unless the Investor is offered in writing the
right to purchase, at the same price and on the same terms proposed to be
issued or sold, an amount of such Equity Securities (the "Maintenance
Securities") as is necessary for the Investor Group to maintain the Investor
Group Interest as it existed immediately prior to such issuance (the
"Anti-Dilutive Rights").  If the Investor does not deliver to the Company
written notice of acceptance of any such offer within 20 business days after
the Investor's receipt thereof, the Investor will be deemed to have waived its
right to purchase all or part of the Maintenance Securities as set forth in
such offer, but the Investor will retain its Anti-Dilutive Rights with respect
to future offers.

         The Anti-Dilutive Rights do not apply to (i) the grant or exercise
of options to purchase shares of stock of the Company, the issuance of
shares of stock of the Company to employees of the Company or any of its
subsidiaries (other than employees who are also employees of a stockholder,
its affiliates or any subsidiary of a stockholder) or otherwise pursuant to
any stock option or similar plan in existence on the date of the
Stockholder Agreement or otherwise adopted by the Board of Directors after
the date of the Stockholder Agreement, (ii) the issuance of the stock of
the Company pursuant to the Warrants or of shares of the stock of the
Company issuable upon exercise of any option, warrant, convertible security
or other rights to purchase shares of stock of the Company which, in each
case, has been issued in compliance with the terms of the provisions
pertaining to the Anti-Dilutive Rights, (iii) the issuance of any
securities pursuant to any stock split, stock dividend or other similar
stock recapitalization or (iv) the issuance of shares of stock of the
Company pursuant to any underwritten public offering of Equity Securities
under an effective registration statement filed by the Company with the
Securities and Exchange Commission (the "SEC") in accordance with the
Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder (the "Securities Act")  (such an offering being
referred to as a "Public Offering"), provided that the action described in
clauses (i), (iii) or (iv) above, as the case may be, has been approved (to
the extent required) in accordance with the provisions of the Stockholder
Agreement.

         The Stockholder Agreement provides that, during the Initial Period,
the Investor may not, and will use its best efforts to cause each member of
the Investor Group not to, directly or indirectly, purchase or otherwise
acquire any Equity Securities if, after giving effect thereto, the Investor
Group Interest would exceed 49.99%.  Notwithstanding the foregoing, the
Stockholder Agreement permits the Investor Group or one or more members
thereof to acquire, directly or indirectly, by purchase or otherwise, Equity
Securities resulting in the Investor Group Interest exceeding such limitation
in the event (i) any Person or group makes an Acquisition Proposal (as defined
in the Merger Agreement), (ii) after the Effective time, Mafco Holdings Inc.,
a Delaware Corporation ("Mafco"), or any affiliate thereof acquires Equity
Securities representing 1% or more of the Total Voting Power, (iii) any Person
or group acquires beneficial ownership of Equity Securities representing 5% or
more of Total Voting Power (10% or more in the case of beneficial ownership
permitted to be reported on Schedule 13G under the Exchange Act), or (iv)
there has been a material adverse change in the business, financial condition
or operations of the Company for, or which would reasonably be expected to
continue for, a sustained period, and the Investor has determined in good
faith that the acquisition of additional Equity Securities is reasonably
necessary to protect its investment in the Company.

         The Stockholder Agreement requires that from the first anniversary of
the Effective Date until the third anniversary of the Effective Time the
Investor not, and use its best efforts to cause each member of the Investor
Group not to, directly or indirectly, purchase or otherwise acquire, or
propose or offer to purchase or acquire, any Equity Securities of the Company,
whether by tender offer, market purchase, privately negotiated purchase,
merger or otherwise, except that the Investor Group may acquire Equity
Securities to the extent that, after giving effect thereto, the Investor Group
Interest would not exceed 75%.

         The Stockholder Agreement permits, however, the Investor Group to
acquire Equity Securities, notwithstanding the fact that, after giving effect
thereto, the Investor Group Interest would exceed 75%, if the Investor Group
(or a member or affiliate thereof, as the case may be) offers, prior to
consummating such purchase, to purchase all outstanding Equity Securities, and
holders of Equity Securities representing more that 50% of the outstanding
Equity Securities (excluding any Equity Securities held by the Investor Group)
accept such offer, and the Investor Group (or a member or affiliate thereof,
as the case may be) consummates such purchase.

         The Stockholder Agreement provides that the Investor may not sell or
otherwise transfer any Equity Securities, except pursuant to a Public
Offering, Rule 144 or Rule 144A or any other transaction in compliance with
the Securities Act, state securities laws and other applicable laws.  The
Investor has agreed to cause any Person who acquires 30% of the Total Voting
Power from the Investor to agree to be bound by the provisions of the
Stockholder Agreement, whereupon such Person will become entitled to all of
the rights and benefits of HLR under the Stockholder Agreement.

         The Stockholder Agreement provides that the Investor (which, for the
purposes of this paragraph and the following three paragraphs hereof, includes
Roche) may from time to time make a written request to the Company for
registration under the Securities Act of Registrable Securities (as defined in
the Stockholder Agreement) (each, a "Demand Registration").  The obligations
of the Company to register such Registrable Securities are subject to the
following conditions:  (i) the Registrable Securities requested to be
registered must (unless reduced pursuant to the provisions of the section of
the Stockholder Agreement entitled "Reduction of Offering"), constitute at
least 2% of the equivalent outstanding Equity Securities or at least 5% of the
Registrable Securities at such time, whichever amount is smaller, (ii) there
shall not have been consummated more than one offering pursuant to a Demand
Registration within the preceding 12 month period, (iii) if the Investor Group
Interest is less than 30% but more than 20%, no more than three other Demand
Registrations shall have been effected after the date on which the Investor
Group Interest was reduced to less than 30%, if the Investor Group Interest is
less than 20% but more than 10%, no more than two other Demand Registrations
shall have been effected after the date on which the Investor Group Interest
was reduced to less than 20% and if the Investor Group Interest is less than
10%, no more than one other Demand Registration shall have been effected after
the date on which the Investor Group Interest was reduced to less than 10%,
(iv) the Investor shall conform to all applicable requirements of the
Securities Act and the Exchange Act with respect to the offering and sale of
securities and advise each underwriter, broker or dealer through which any of
the Registrable Securities are offered that the Registrable Securities are
part of a distribution that is subject to the prospectus delivery requirements
of the Securities Act and (v) the Investor shall use all reasonable efforts to
effect as wide a distribution of such Registrable Securities as is reasonably
practicable, but in no event will any sale of Registrable Securities be made
knowingly to any Person who beneficially owns 5% or more of the Total Voting
Power.

         In addition, the Company's obligations pursuant to any Demand
Registration will be suspended if (i) the fulfillment of such obligations
would require the Company to make a disclosure that would, in the reasonable
good faith and judgment of the Board of Directors, be materially detrimental
and premature, (ii) the Company has filed a registration statement with
respect to Equity Securities to be distributed in a Public Offering and it is
advised by its lead or managing underwriter that an offering by the Investor
of the Registrable Securities would materially adversely affect the
distribution of such Equity Securities or (iii) the fulfillment of such
obligations would require the Company to prepare audited financial statements
not required to be prepared for the Company to comply with its obligations
under the Exchange Act as of any date not coincident with the last day of any
fiscal year of the Company.  The obligations of the Company, however, will be
reinstated (x) in the case of clause (i) above, upon the making of such
disclosure (or, if earlier, when such disclosure would either be no longer
necessary for the fulfillment of such obligations or no longer detrimental),
(y) in the case of clause (ii) above, upon the conclusion of any period during
which the Company would not, pursuant to the terms of its underwriting
arrangements, be permitted to sell securities of the Company for its own
account and (z) in the case of clause (iii) above, as soon as it would no
longer be necessary to prepare such financial statements to comply with the
Exchange Act.

         The Stockholder Agreement provides that, if the Company proposes to
file a registration statement under the Securities Act with respect to an
offering of any securities of the Company for the Company's own account (other
than a registration statement on Form S-4 or S-8 (or any substitute that may
be adopted by the SEC) or the account of any holder of Equity Securities other
than any member of the Investor Group (each, an "Other Holder") (other than
Mafco or any of its affiliates), then the Company will give written notice of
such proposed filing to the Investor as soon as practicable, and such notice
will offer the Investor the opportunity to register such number of shares of,
or Warrants constituting, Registrable Securities as the Investor may request
on the same terms and conditions as those applicable to the securities of the
Company or of the Other Holders in the offering (a "Piggyback Registration").
Upon the written request of the Investor made within ten days after the
receipt of notice from the Company, which request shall specify the amount and
types of Registrable Securities intended to be issued or disposed of, the
Company will use its best efforts, subject to certain conditions set forth in
the Stockholder Agreement, to effect the registration under the Securities Act
of all such Registrable Securities which the Company has been so requested to
register by the Investor, to the extent requisite to permit the disposition of
such Registrable Securities to be so registered.  In connection with any
Demand Registration or any Piggyback Registration, the Company will pay all
Registration Expenses (as defined in the Stockholder Agreement) of the
Investor.

         Pursuant to the Stockholder Agreement, the Company has agreed that it
will file necessary reports with the SEC and to take other action as
reasonably requested by the Investor to enable it to sell its Company
securities pursuant to Rule 144 under the Securities Act.  If the Investor
desires to transfer any of its securities of the Company pursuant to Rule
144A, the Stockholder Agreement requires the Company to promptly, upon request
by the Investor, use its best efforts to facilitate the consummation of such
Rule 144A transaction in accordance with the requirements of such rule and
with such request and will take all necessary or appropriate actions in
connection therewith.  If the Investor Group Interest is less than 30%, then
the Company will only be required to facilitate the consummation of such Rule
144A transaction according to the following provisions:  (i) if the Investor
Group Interest is less than 30% but more than 20%, no more than three other
Rule 144A transactions will have been effected after the date on which the
Investor Group Interest was reduced to less than 30%, (ii) if the Investor
Group Interest is less than 20% but more that 10%, no more than two other Rule
144A transaction will have been effected after the date on which the Investor
Group Interest was reduced to less than 20% and (iii) if the Investor Group
Interest is less than 10%, no more than one other Ruler 144A transaction will
have been effected after the date on which the Investor Group Interest was
reduced to less than 10% the Company has agreed to pay all expenses in
connection with Rule 144A transactions by the Investor to the same extent as
the Company would be required to pay Registration Expenses.

         In the Stockholder Agreement, the Company has agreed to provide
certain information to the Investor on a periodic basis and as requested, and
the Company has agreed that it will not enter into any agreements with respect
to its securities which would be inconsistent with the rights granted to the
Investor, the Investor Group and the Investor Directors in the Stockholder
Agreement.

         The provisions of the Stockholder Agreement will terminate if the
Investor Group Interest is less than 30%, provided, however, that the
provisions relating to the obligation of the Company to furnish certain
information will not terminate until such time as the Investor Group Interest
is less than 20%, certain provisions regarding Board and Board committee
membership and amendment of the Company's certificate of incorporation and
bylaws will not terminate until such time as the Investor Group Interest is
less than 10%, the registration rights will not terminate until such time as
the Investor Group does not own any Registrable Securities (except the
provisions relating to Piggyback Registrations, which will terminate at such
time as the Investor Group Interest is less than 20%) and certain
miscellaneous provisions will not terminate until all other provisions of the
Stockholder Agreement have terminated.  Furthermore, in the event that the
Investor Group Interest exceeds 50%, the provisions pertaining to corporate
governance will terminate, but will be reinstated, at the request of the
Investor, if the Investor Group Interest is later reduced below 50%.  The
description herein regarding terms of Stockholder Agreement is qualified by
reference to Exhibit I attached hereto and incorporated by reference herein.

         In connection with entering into the Merger Agreement, HLR, Mafco,
National Health Care Group, Inc., a Delaware corporation ("NHCG"), and (for
the purposes set forth therein) the Company entered into the Sharing and Call
Option Agreement dated as of December 13, 1994 (the "Sharing and Call Option
Agreement"), which among other things, sets forth certain agreements among the
parties thereto with respect to the securities of the Company, as described
below.  A copy of the Sharing and Call Option Agreement is filed as Exhibit 4
hereto and is hereby incorporated herein by reference, and the description
herein of the terms of such agreement is qualified in its entirety by
reference to such Exhibit.

         The Sharing and Call Option Agreement provides (among other things)
that at any time after the third anniversary of the Effective Date, a member
of the Investor Group may exercise the right (the "Call Right"), which right
may only be exercised once, to purchase all, but not less than all, the shares
of Common Stock then owned by NHCG, Mafco or any of their controlled
affiliates.  If a member of the Investor Group intends to exercise the Call
Right, then, not less than 20 business days prior to the exercise thereof,
such member is required to so notify Mafco and NHCG of such intention,
specifying in such notice (the "Call Notice") the date of such exercise (the
"Exercise Date").  From and after the receipt of a Call Notice, the Sharing
and Call Option Agreement prohibits NHCG, Mafco and any of their controlled
affiliates from transferring any shares of Common Stock that are owned by them
except during any period expiring 15 business days prior to the Exercise Date.

         The Sharing and Call Option Agreement provides that a member of the
Investor Group will pay a price per share for the shares to be purchased equal
to 102% of the average closing price per share of such security as reported on
the principal national securities exchange on which such shares are listed, or
if not so listed, as reported on NASDAQ/NMS, for the 30 trading days before
the Exercise Date.

         Except as otherwise described herein, to the best of the Reporting
Persons' knowledge, there are no contracts, arrangements, understandings or
relationship (legal or otherwise) among the Reporting Persons and between the
Reporting Persons and any person with respect to any securities of the issuer,
including but not limited to transfer or voting of any of the securities,
finder's fees, joint ventures, loan or option arrangements, puts or calls,
guarantees of profits, division of profits or loss, or the giving or
withholding of proxies.


Item 7.  Material Filed as Exhibits.

 Exhibit
  Number                           Title
- ---------                          _____
    1   Agreement and Plan of Merger dated as of December 13, 1994, among
        National Health Laboratories Holdings Inc., HLR Holdings Inc., Roche
        Biomedical Laboratories, Inc. and Hoffmann-La Roche Inc.  (schedules
        omitted -- Roche Holdings, Inc. agrees to furnish a copy of any
        schedule to the Securities and Exchange Commission upon request)

    2   Warrant Agreement dated as of April 10, 1995, between National Health
        Laboratories Holdings Inc. and American Stock Transfer & Trust
        Company

    3   Stockholder Agreement dated as of April 28, 1995, among HLR Holdings
        Inc., Hoffmann-La Roche Inc., Roche Holdings, Inc. and National
        Health Laboratories Holdings Inc.

    4   Sharing and Call Option Agreement dated as of December 13, 1994, among
        HLR Holdings Inc., Mafco Holdings Inc., National Health Care Group,
        Inc. and National Health Laboratories Holdings Inc.


                                   SIGNATURE

         After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete
and correct.



Dated:  May 8, 1995



                                      ROCHE HOLDINGS, INC.

                                      By: /s/ Henri B. Meier
                                         _____________________
                                         Name:  Henri B. Meier
                                         Title:  Vice President and Treasurer





                                                                    SCHEDULE A

                      Executive Officers and Directors(*)
                                      of
                               HLR Holdings Inc.

      The names of the Directors and the names and titles of the Executive
Officers of HLR Holdings Inc. and their business addresses and principal
occupations are set forth below.  If no address is given, the Director's or
Executive Officer's business address is that of Hoffmann-La Roche Inc., which
is 340 Kingsland Street, Nutley, New Jersey 07110.  Unless otherwise
indicated, each occupation set forth opposite an individual's name refers to
Hoffmann-La Roche Inc. and each individual is an American citizen.

Name, Business Address                    Present Principal Occupation
- ----------------------                    ----------------------------

* Patrick J. Zenner...................   President and Chief Executive Officer
   (President)
* Thomas P. Mac Mahon.................   Senior Vice President (President,
                                         Roche Diagnostics Group)
* Martin F. Stadler...................   Senior Vice President
* Frederick C. Kentz III..............   Vice President, Secretary and General
   (Secretary)                           Counsel
* David W.  Dupert.....................  Vice President, Delaware Corporate
   (Controller)                          Management, Inc.
   Delaware Corporate Management, Inc.
   Suite 1300
   1105 North Market St.
   Wilmington, DE  19801
* William D. Johnston.................    Attorney-at-Law, Partner, Young,
   (Assistant Secretary)                  Conaway, Stargatt & Taylor
   11th Fl.
   Rodney Square North
   P.O. Box 391
   Wilmington, DE  19899
  William L. Hennrich.................    Vice President and Treasurer,
   (Treasurer)                            Hoffmann-La Roche Inc.


                                                                    SCHEDULE B
                                                                    __________
                      Executive Officers and Directors(*)
                                      of
                            Hoffmann-La Roche Inc.


      The names of the Directors and the names and titles of the Executive
Officers of Hoffmann-La Roche Inc. and their business addresses and principal
occupations are set forth below.  If no address is given, the Director's or
Executive Officer's business address is that of Hoffmann-La Roche Inc., which
is 340 Kingsland Street, Nutley, New Jersey 07110.  Unless otherwise
indicated, each occupation set forth opposite an individual's name refers to
Hoffmann-La Roche Inc. and each individual is an American citizen, except that
Dr. Drews and Dr. Steinmetz are German citizens, and Messrs. Kessler and
Gerber and Dr. Gilgen are Swiss citizens.

Name, Business Address         Present Principal Occupation
- ----------------------         ----------------------------
* Patrick J. Zenner.........   President and Chief Executive Officer
* Dr. Jurgen Drews..........   Senior Vice President
* Thomas P. Mac Mahon.......   Senior Vice President (President, Roche
                               Diagnostics Group)
* Martin F. Stadler.........   Senior Vice President
* Frederick C. Kentz III....   Vice President, Secretary and General Counsel
* Dr. Paul Gilgen...........   Vice President (President, Roche Vitamins &
                               Fine Chemicals)
* Dr. Michael Steinmetz.....   Vice President
* Stephen G. Sudovar........   Vice President
* Dr. Armin M. Kessler......   Chief Operating Officer, Roche Holding Ltd
   Grenzacherstrasse 124
   4002 Basel, Switzerland
* Dr. Fritz Gerber..........   Chairman of the Board and Chief Executive
   Grenzacherstrasse 124       Officer, Roche Holding Ltd
   4002 Basel, Switzerland
   Frank J. D'Angelo........   Vice President
   Charles V. Flemming......   Vice President
   George M. Gould..........   Vice President
   William L. Hennrich......   Vice President and Treasurer
   Steven D. Grossman.......   Vice President
   Ronald S. LaBarbera......   Vice President
   Robert T. Fischetta......   Assistant Controller
   Robert A. Meyers.........   Assistant Controller
   William H. Epstein.......   Assistant Secretary
   George W. Johnston.......   Assistant Secretary
   David E. Seligman........   Assistant Secretary
   Alan B. Spitzer..........   Assistant Treasurer


                                                                    SCHEDULE C

                      Executive Officers and Directors(*)
                                      of
                             Roche Holdings, Inc.


      The names of the Directors and the names and titles of the Executive
Officers of Roche Holdings, Inc. and their business addresses and principal
occupations are set forth below.  If no address is given, the Director's or
Executive Officer's business address is that of Roche Holding Ltd, which is
Grenzacherstrasse 124, 4002 Basel, Switzerland.  Unless otherwise indicated,
each occupation set forth opposite an individual's name refers to Roche
Holding Ltd and each individual is a Swiss citizen.

Name, Business Address              Present Principal Occupation
- ----------------------              ----------------------------
* Fritz Gerber .................    Chairman of the Board, President and Chief
  (President)                       Executive Officer
* Dr. Henri B. Meier............    Chief Financial Officer
  (Vice President and Treasurer)
  Peter N. Schiller.............    Attorney-at-Law
  (Secretary)
  Hoffstots Lane
  Sands Point, NY 11050



                                                                    SCHEDULE D

                      Executive Officers and Directors(*)
                                      of
                               Roche Finance Ltd


      The names of the Directors and the names and titles of the Executive
Officers of Roche Finance Ltd and their business addresses and principal
occupations are set forth below.  If no address is given, the Director's or
Executive Officer's business address is that of Roche Holding Ltd, which is
Grenzacherstrasse 124, 4002 Basel, Switzerland. Unless otherwise indicated,
each occupation set forth opposite an individual's name refers to Roche
Holding Ltd and each individual is a Swiss citizen.

Name, Business Address            Present Principal Occupation
- ----------------------            ----------------------------
* Fritz Gerber ...............    Chairman of the Board, President and Chief
 (President)                      Executive Officer
* Dr. Andres F. Leuenberger...    Vice Chairman of the Board
* Dr. Henri B. Meier..........    Chief Financial Officer


                                                                    SCHEDULE E

                      Executive Officers and Directors(*)
                                      of
                               Roche Holding Ltd


      The names of the Directors and the names and titles of the Executive
Officers of Roche Holding Ltd and their business addresses and principal
occupations are set forth below.  If no address is given, the Director's or
Executive Officer's business address is that of Roche Holding Ltd, which is
Grenzacherstrasse 124, 4002 Basel, Switzerland.  Unless otherwise indicated,
each occupation set forth opposite an individual's name refers to Roche
Holding Ltd and each individual is a Swiss citizen, except that Dr. Drews is a
German citizen and Mr. Belingard is a French citizen.

Name, Business Address             Present Principal Occupation
- ----------------------             ----------------------------
* Fritz Gerber...................  Chairman of the Board and Chief Executive
                                    Officer
* Dr. Lukas Hoffmann.............  Vice Chairman of the Board, Vice Chairman of

   Le petit Essert                 WWF International (a nonprofit
                                    organization)
   1147 Montricher, Switzerland
* Dr. Andres F. Leuenberger......  Vice Chairman and Delegate of the Board
* Dr. h.c. Paul Sacher...........  Conductor and Founder of Paul Sacher
   Haus auf Burg                   Foundation (a nonprofit organization)
   Muensterplatz 4
   4051 Basel, Switzerland
* Dr. Armin M. Kessler...........  Chief Operating Officer
* Dr. Henri B. Meier.............  Chief Financial Officer
* Dr. Jakob Oeri.................  Surgeon and retired Head Physician,
   St. Alban - Vorstadt 71         Kantonsspital Basel (hospital)
* Dr. Kurt Jenny                   Lawyer
  Aeschengraben 18
  4051 Basel, Switzerland
* Prof. Dr. Werner Stauffacher     Head, Department of Internal Medicine,
  Department of Internal Medicine  University of Basel
  University of Basel
  Hebelstrasse 32
  4056 Basel, Switzerland

* Prof. Charles Weissmann........  Professor, University of Zurich
   Director
   Institut fur Molekularbiologie
   I der Universitaet Zurich
   Hoenggerberg
   8093 Zurich, Switzerland
   Dr. Markus Altwegg............  General Manager
   Dr. Roland Bronnimann.........  General Manager
   Dr. Jurgen Drews..............  General Manager
   Jean-Luc Belingard............  General Manager


                                 Exhibit Index

          Exhibit                                                    Title
           Number
- ----------------------------
   1        Agreement and Plan of Merger dated as of December 13, 1994, among
            National Health Laboratories Holdings Inc., HLR Holdings Inc.,
            Roche Biomedical Laboratories, Inc. and Hoffmann-La Roche Inc.
            (schedules omitted -- Roche Holdings, Inc. agrees to furnish a
            copy of any schedule to the Securities and Exchange Commission
            upon request)

   2        Warrant Agreement dated as of April 10, 1995, between National
            Health Laboratories Holdings Inc. and American Stock Transfer
            & Trust Company

   3        Stockholder Agreement dated as of April 28, 1995, among HLR
            Holdings Inc., Hoffmann-La Roche Inc., Roche Holdings, Inc. and
            National Health Laboratories Holdings Inc.

   4        Sharing and Call Option Agreement dated as of December 13, 1994,
            among HLR Holdings Inc., Mafco Holdings Inc., National Health Care
            Group, Inc. and National Health Laboratories Holdings Inc.



                                                                Exhibit 1
                                                                CONFORMED COPY

                         AGREEMENT AND PLAN OF MERGER

                                  dated as of

                               December 13, 1994

                                     among

                  National Health Laboratories Holdings Inc.,

                               HLR Holdings Inc.

                                      and

                      Roche Biomedical Laboratories, Inc.


                             TABLE OF CONTENTS(1)

- ---------
(1) This Table of Contents is not a part of this Agreement.

                                   ARTICLE 1
                                  THE MERGER

   SECTION 1.1.   The Merger...............................................  2
   SECTION 1.2.   Conversion of Shares.....................................  2
   SECTION 1.3.   Surrender and Payment....................................  4
   SECTION 1.4.   Warrants.................................................  5
   SECTION 1.5.   Stock Options............................................  6


                                   ARTICLE 2
                           THE SURVIVING CORPORATION

   SECTION 2.1.   Certificate of Incorporation.............................  7
   SECTION 2.2.   Bylaws...................................................  7
   SECTION 2.3.   Directors and Officers...................................  7


                                   ARTICLE 3
                     REPRESENTATIONS AND WARRANTIES OF NHL

   SECTION 3.1.   Corporate Existence and Power............................  8
   SECTION 3.2.   Corporate Authorization..................................  8
   SECTION 3.3.   Governmental Authorization...............................  8
   SECTION 3.4.   Non-Contravention........................................  9
   SECTION 3.5.   Capitalization...........................................  9
   SECTION 3.6.   Subsidiaries............................................. 10
   SECTION 3.7.   SEC Filings.............................................. 11
   SECTION 3.8.   Financial Statements..................................... 11
   SECTION 3.9.   Disclosure Documents..................................... 11
   SECTION 3.10.  Absence of Certain Changes............................... 12
   SECTION 3.11.  No Undisclosed Material Liabilities...................... 13
   SECTION 3.12.  Litigation............................................... 14
   SECTION 3.13.  Taxes.................................................... 14
   SECTION 3.14.  ERISA.................................................... 15
   SECTION 3.15.  Compliance with Laws; Permits............................ 18
   SECTION 3.16.  Finders' Fees............................................ 18
   SECTION 3.17.  Other Information........................................ 18
   SECTION 3.18.  Environmental Matters.................................... 18
   SECTION 3.19.  Takeover Statutes........................................ 20
   SECTION 3.20.  Opinion of Financial Advisor............................. 20
   SECTION 3.21.  Vote Required............................................ 20


                                   ARTICLE 4
                 REPRESENTATIONS AND WARRANTIES OF HLR AND RBL

   SECTION 4.1.   Corporate Existence and Power............................ 21
   SECTION 4.2.   Corporate Authorization.................................. 21
   SECTION 4.3.   Governmental Authorization............................... 21
   SECTION 4.4.   Non-Contravention........................................ 21
   SECTION 4.5.   Capitalization of RBL.................................... 22
   SECTION 4.6.   Subsidiaries............................................. 22
   SECTION 4.7.   Financial Statements..................................... 23
   SECTION 4.8.   Disclosure Documents..................................... 23
   SECTION 4.9.   Absence of Certain Changes............................... 23
   SECTION 4.10.  No Undisclosed Material Liabilities...................... 25
   SECTION 4.11.  Litigation............................................... 25
   SECTION 4.12.  Taxes.................................................... 25
   SECTION 4.13.  ERISA.................................................... 26
   SECTION 4.14.  Compliance with Laws; Permits............................ 29
   SECTION 4.15.  Finders' Fees............................................ 29
   SECTION 4.16.  Environmental Matters.................................... 29
   SECTION 4.17.  HLR Cash Consideration................................... 30
   SECTION 4.18.  Takeover Statutes........................................ 30
   SECTION 4.19.  Ownership of NHL Shares.................................. 31


                                   ARTICLE 5
                               COVENANTS OF NHL

   SECTION 5.1.   Conduct of NHL........................................... 31
   SECTION 5.2.   Stockholder Meeting; Proxy Material; Registration Statement;
                   Stock Exchange Listing.................................. 32
   SECTION 5.3.   Access to Information; Confidentiality................... 33
   SECTION 5.4.   Other Offers............................................. 34
   SECTION 5.5.   Notices of Certain Events................................ 35
   SECTION 5.6.   Tax Matters.............................................. 35
   SECTION 5.7.   Board Composition........................................ 36


                                   ARTICLE 6
                           COVENANTS OF HLR AND RBL

   SECTION 6.1.   Conduct of RBL........................................... 36
   SECTION 6.2.   Access to Information; Confidentiality................... 37
   SECTION 6.3.   Voting of Shares......................................... 38
   SECTION 6.4.   Notices of Certain Events................................ 38
   SECTION 6.5.   Tax Matters.............................................. 39
   SECTION 6.6.   NHL Employment Agreements................................ 39
   SECTION 6.7.   Certain Actions Regarding RBL............................ 39


                                   ARTICLE 7
                         COVENANTS OF HLR, RBL AND NHL

   SECTION 7.1.   Reasonable Efforts....................................... 40
   SECTION 7.2.   Cash Consideration....................................... 40
   SECTION 7.3.   Public Announcements..................................... 41
   SECTION 7.4.   Further Assurances....................................... 41
   SECTION 7.5.   HLR Stockholder Agreement................................ 41
   SECTION 7.6.   Indemnification and Insurance............................ 41


                                   ARTICLE 8
                                  TAX MATTERS

   SECTION 8.1.   Definitions.............................................. 42
   SECTION 8.2.   Tax Covenants............................................ 42
   SECTION 8.3.   Termination of Existing Tax Sharing Agreements........... 44
   SECTION 8.4.   Tax Sharing.............................................. 44
   SECTION 8.5.   Cooperation on Tax Matters............................... 47


                                   ARTICLE 9
                           CONDITIONS TO THE MERGER

   SECTION 9.1.   Conditions to the Obligations of Each Party.............. 47
   SECTION 9.2.   Conditions to the Obligations of HLR and RBL............. 48
   SECTION 9.3.   Conditions to the Obligations of NHL..................... 49


                                  ARTICLE 10
                                  TERMINATION

   SECTION 10.1.  Termination.............................................. 50
   SECTION 10.2.  Effect of Termination.................................... 51


                                  ARTICLE 11
                                 MISCELLANEOUS

   SECTION 11.1.  Notices.................................................. 52
   SECTION 11.2.  Survival of Agreements and Representations and Warranties 52
   SECTION 11.3.  Amendments; No Waivers................................... 53
   SECTION 11.4.  Fees and Expenses........................................ 53
   SECTION 11.5.  Successors and Assigns................................... 53
   SECTION 11.6.  Governing Law............................................ 54
   SECTION 11.7.  Counterparts; Effectiveness.............................. 54
   SECTION 11.8.  Certain Definitions...................................... 54
   SECTION 11.9.  Agreements of Roche...................................... 54



   Exhibit A -Form of HLR Stockholder Agreement*

   Exhibit B -Form of NHL Representations Letter*

   Exhibit C -Form of HLR Representations Letter*

   Exhibit D -Form of RBL/HLR Tax Opinion*

   Exhibit E -Form of NHL Tax Opinion*

- ---------
   * Not attached.

                           TABLE OF DEFINED TERMS(2)

- ---------
(2) This Table of Defined Terms is not a part of the Agreement.



     Term                                                         Section
     ____                                                         _______
1933 Act............................................................. 3.3
1934 Act............................................................. 3.3
Acquisition Proposal....................................... 5.4(a)(ii)(B)
Adjusted Option................................................... 1.5(b)
Affiliate.........................................................11.8(8)
Anti-dilution Adjustment.......................................... 1.2(b)
Borrowed Funds.................................................... 6.7(a)
Cash Consideration.................................................1.2(a)
Cash Consideration Fund........................................... 1.3(a)
CERCLA...................................................... 3.18(e)(iii)
Certificates....................................................   1.3(b)
Code.....................................................Recitals, page 1
Conversion Consideration.......................................... 1.2(a)
Conversion Number..................................................1.5(b)
CS Commitment Letter................................................. 7.2
Delaware Law.............................................Recitals, page 1
Dissenting Shares................................................. 1.2(e)
Dissenting Stockholder............................................ 1.2(e)
Effective Time.................................................... 1.1(b)
Employee Stock Options............................................ 1.5(a)
Environmental Laws.............................................3.18(e)(i)
ERISA............................................................ 3.14(a)
ERISA Affiliate...............................................3.15(a)(ii)
Exchange Agent.................................................    1.3(a)
Excess Shares................................................. 1.2(d)(ii)
Exon-Florio.......................................................... 4.3
Expiration Date................................................... 1.4(a)
Fractional Shares Fund........................................ 1.2(d)(ii)
GAAP................................................................. 3.8
Hazardous Substances......................................... 3.18(e)(ii)
HLR......................................................Recitals, page 1
HLR Adverse Condition......................................... 9.2(d)(iv)
HLR Cash Consideration............................................ 1.3(a)
HLR Group............................................................ 8.1
HLR-NHL Shares.................................................... 1.2(b)
HLR Number........................................................ 1.2(b)
HLR Representations Letter........................................ 8.2(i)
HLR Stockholder Agreement............................... Recitals, page 1
HLR/RBL Post-Signing Returns........................................  6.5
HSR Act............................................................   3.3
HSR Authority.....................................................10.1(g)
IRS...............................................................3.13(h)
known to............................................................ 11.8
Liabilities........................................................  3.11
Lien................................................................. 3.4
Merger...................................................Recitals, page 1
MF & Co..................................................Recitals, page 1
Morgan Stanley...................................................... 3.16
Multiemployer Plan.............................................3.14(b)(i)
Net Debt Amount................................................... 6.7(a)
NHCG.....................................................Recitals, page 1
NHL......................................................Recitals, page 1
NHL Adverse Condition..........................................9.3(d)(ii)
NHL Benefit Arrangements.....................................3.14(e)(iii)
NHL Cash Consideration............................................ 1.3(a)
NHL Common Stock........................................ Recitals, page 1
NHL Disclosure Schedule.........................................Article 3
NHL Employee Plans............................................3.14(d)(ii)
NHL Environmental Liabilities.................................3.18(d)(ii)
NHL Group............................................................ 8.1
NHL Material Adverse Change...................................... 3.10(a)
NHL Material Adverse Effect.........................................  3.1
NHL Permits.......................................................3.15(b)
NHL Post-Signing Returns............................................. 5.6
NHL Preferred Stock.................................................. 3.5
NHL Proxy Statement............................................... 3.9(a)
NHL Representations Letter........................................ 8.2(h)
NHL Retirement Plans......................................... 3.14(b)(ii)
NHL Returns....................................................   3.13(a)
NHL Securities....................................................... 3.5
NHL Share......................................................... 1.2(a)
NHL Share Conversion...............................................1.2(a)
NHL Stockholder Meeting.............................................. 5.2
NHL Subsidiary Securities..................................... 3.6(b)(ii)
NLRB............................................................. 3.14(h)
Notice of Superior Proposal.................................. 5.4(b)(iii)
NYSE.......................................................... 1.2(d)(ii)
Option Cash Amount............................................ 1.5(a)(ii)
Option Conversion Number.......................................... 1.5(b)
Option Stock Amount............................................1.5(a)(ii)
Option Value Amount............................................1.5(a)(ii)
Person........................................................... 11.8(c)
Post-Merger Tax Period............................................... 8.1
Pre-Merger Tax Period................................................ 8.1
Pro Forma Balance Sheet........................................... 6.7(a)
RIAS................................................................. 4.7
RBL......................................................Recitals, page 1
RBL Balance Sheet.................................................... 4.7
RBL Balance Sheet Date................................................4.7
RBL Benefit Arrangements..................................... 4.3(e)(iii)
RBL Disclosure Schedule........................................ Article 4
RBL Employee Plans.........................................4.13(a)(ii)(B)
RBL Environmental Liabilities................................ 4.16(d)(ii)
RBL Financial Statements............................................. 4.7
RBL Material Adverse Change....................................... 4.8(a)
RBL Material Adverse Effect.........................................  4.1
RBL Permits....................................................   4.14(b)
RBL Retirement Plans......................................... 4.13(b)(ii)
RBL Returns...................................................... 4.12(a)
RBL Subsidiary Securities......................................4.6(b)(ii)
Registration Statement............................................ 3.9(a)
Release..................................................... 3.18(e)(iii)
Released.................................................... 3.18(e)(iii)
Roche....................................................Recitals, page 1
Roche Warrant Consideration....................................... 1.3(a)
Roche Warrants.....................................................1.3(a)
SEC.................................................................. 3.1
SEC Documents......................................................3.7(a)
Share............................................................. 1.2(b)
Sharing and Call Option Agreement........................Recitals, page 1
Significant Subsidiary............................................... 3.1
Subsidiary........................................................... 3.1
Superior Proposal............................................ 5.4(b)(iii)
Surviving Corporation............................................. 1.1(a)
Tax................................................................. 3.13
Tax Sharing Agreement................................................ 8.1
to the knowledge of................................................. 11.8
Warrant............................................................1.4(a)
Warrant Agreement..................................................1.4(a)



                         AGREEMENT AND PLAN OF MERGER



         AGREEMENT AND PLAN OF MERGER dated as of December 13, 1994 among
National Health Laboratories Holdings Inc., a Delaware corporation ("NHL" and
for purposes of this Agreement references to NHL shall be deemed to include,
as appropriate in the context, National Health Laboratories Inc., a Delaware
corporation which is NHL's predecessor in interest), HLR Holdings Inc., a
Delaware corporation ("HLR"), and Roche Biomedical Laboratories, Inc. a New
Jersey corporation and a direct wholly-owned subsidiary of HLR ("RBL") and for
the purposes of Sections 1.4(b) and 11.9, Hoffmann-La Roche Inc., a New Jersey
corporation ("Roche").

         WHEREAS, the respective Boards of Directors of HLR, RBL and NHL have
approved the merger of RBL with and into NHL (the "Merger") upon the terms and
subject to the conditions of this Agreement and in accordance with the General
Corporation Law of the State of Delaware ("Delaware Law"); and

         WHEREAS, the Board of Directors of NHL has determined that the Merger
is fair to, and in the best interests of, the holders of NHL common stock, par
value $0.01 per share ("NHL Common Stock"), and has approved this Agreement,
the Sharing and Call Option Agreement dated the date hereof among HLR,
National Health Care Group, Inc. ("NHCG"), a Delaware corporation, which is a
significant stockholder of NHL, and Mafco Holdings Inc., the ultimate parent
company of NHCG (the "Sharing and Call Option Agreement") and the HLR
Stockholder Agreement to be entered into immediately prior to the Merger by
HLR and NHL which agreement shall be substantially in the form of Exhibit A
hereto (the "HLR Stockholder Agreement") and the transactions contemplated
hereby and thereby, and recommended approval and adoption of this Agreement
and such transactions by the stockholders of NHL; and

         WHEREAS, the Board of Directors of RBL has determined that the Merger
is fair to, and in the best interests of, RBL and HLR, and has approved this
Agreement, and the transactions contemplated hereby and the Board of Directors
of HLR has approved and adopted this Agreement and has approved the HLR
Stockholder Agreement and the Sharing and Call Option Agreement and the
transactions contemplated hereby and thereby; and

         WHEREAS, the parties intend that the Merger qualify as a
reorganization within the meaning of Section 368(a)(i) of the Internal Revenue
Code of 1986, as amended (the "Code"); and

         WHEREAS, in connection with the Merger, a portion of each share of
NHL Common Stock will be converted into the right to receive $5.60 in cash
in a transaction constituting a redemption within the meaning of Section
317(b) of the Code; and

         NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements contained herein, the parties hereto agree as
follows:



                                   ARTICLE 1
                                  THE MERGER

         SECTION 1.1.   The Merger.  (a)  Upon the terms and subject to the
conditions set forth in this Agreement, and in accordance with Delaware Law,
RBL shall be merged with and into NHL at the Effective Time (as defined in
Section 1.1(b)), whereupon the separate existence of RBL shall cease, and
NHL shall be the surviving corporation (the "Surviving Corporation").

         (b) As soon as practicable after satisfaction or, to the extent
permitted hereunder, waiver of all conditions to the Merger, NHL and RBL will
file a certificate of merger, in the form required by and executed in
accordance with Delaware Law, with the Secretary of State of the State of
Delaware and make all other filings or recordings required by Delaware Law in
connection with the Merger.  The Merger shall become effective at such time as
the certificate of merger is duly filed with the Secretary of State of the
State of Delaware, which shall be as soon as practicable following the NHL
Stockholder Meeting (as defined in Section 5.2 hereof) (the "Effective Time").

         (c) From and after the Effective Time, the Surviving Corporation shall
possess all the rights, privileges, powers and franchises and be subject to
all of the restrictions, disabilities and duties of NHL and RBL, all as
provided under Delaware Law.

         SECTION 1.2.   Conversion of Shares.  At the Effective Time:

         (a) each share of NHL Common Stock (each an "NHL Share") issued and
outstanding prior to the Effective Time (other than any NHL Shares held by
RBL, HLR or any Subsidiary)  (as defined in Section 3.1) shall, subject to
Section 1.2(d) be converted into (x) 0.72 of an NHL Share and (y) the right
to receive $5.60 in cash without interest thereon (the "Cash Consideration"
and, together with the NHL Shares to be issued pursuant to (x) above, the
"Conversion Consideration"; such conversion is referred to herein as the
"NHL Share Conversion");

         (b) all RBL common shares, no par value (each a "Share" and
collectively the "Shares"), outstanding immediately prior to the Effective
Time shall (except as provided in Section 1.2(c)) be converted into and
become, in the aggregate, the HLR Number (as defined below) of NHL Shares,
newly issued as contemplated by this Agreement (the "HLR-NHL Shares"), each
such HLR-NHL Share having the same rights, powers and privileges as an NHL
Share outstanding immediately prior to the Effective Time.  The "HLR
Number" shall be that number of NHL Shares as would, in the aggregate and
after giving effect to the Merger (including issuance of the HLR-NHL Shares
and the NHL Share Conversion) and the number of NHL Shares held by HLR or
any Affiliate immediately prior to the Merger, equal 49.9% of the total
number of NHL Shares which would be outstanding immediately after the
Effective Time (after giving effect to the issuance under such Section 1.5 of
NHL Shares in respect of Employee Stock Options (as defined in Section
1.5(a)).  If between the date of this Agreement and the Effective Time, the
outstanding shares of NHL Common Stock shall have been changed into a
different number of shares or a different class, by reason of any stock
dividend, subdivision, reclassification, recapitalization, split,
combination or exchange of shares, the HLR Number shall be correspondingly
adjusted to reflect such stock dividend, subdivision, classification,
recapitalization, split, combination or exchange of shares (any such
adjustment being referred to herein as an "Anti-dilution Adjustment"); and

         (c) each Share held by RBL, HLR or any Subsidiary thereof as treasury
stock immediately prior to the Effective Time shall be canceled and no payment
or issuance of a HLR-NHL Share shall be made with respect thereto;

         (d) no certificates or scrip representing less than one share of NHL
Common Stock shall be issued upon the surrender for exchange of Certificates
pursuant to Section 1.2.  In lieu of any such fractional share, each holder
of a Certificate who would otherwise have been entitled to a fraction of a
share of NHL Common Stock upon surrender of Certificates for exchange
pursuant to Section 1.2 shall be paid upon such surrender cash (without
interest) in an amount equal to such holder's proportionate interest in the
net proceeds from the sale or sales in the open market by the Exchange
Agent, (as defined in Section 1.3) on behalf of all such holders, of the
aggregate fractional NHL Common Stock issued pursuant to this Section
1.2(d).  As soon as practicable following the Effective Time, the Exchange
Agent shall determine the excess of (i) the number of full shares of NHL
Common Stock delivered to the Exchange Agent by NHL over (ii) the sum of
the number of full shares of NHL Common Stock to be distributed to each
holder of Certificates (such excess being herein called the "Excess
Shares"), and the Exchange Agent, as agent for the former holders of
Certificates, shall sell the Excess Shares at the prevailing prices on the
New York Stock Exchange, Inc.  ("NYSE").  The sales of the Excess Shares by
the Exchange Agent shall be executed on the NYSE through one or more member
firms of the NYSE and shall be executed in round lots to the extent
practicable.  NHL shall pay all commissions, transfer taxes and other out-
of-pocket transaction costs, including the expenses and compensation of the
Exchange Agent, incurred in connection with such sale of Excess Shares.
Until the net proceeds of such sale have been distributed to the holders of
Certificates, the Exchange Agent will hold such proceeds in trust for such
former holders of Certificates (the "Fractional Shares Fund").  As soon as
practicable after the determination of the amount of cash to be paid to
holders of certificates in lieu of any fractional interests, the Exchange
Agent shall make available in accordance with this Agreement such amounts
to such holders of Certificates;

         (e) notwithstanding anything in this Agreement, any issued and
outstanding NHL Shares held by a person who objects to the Merger (a
"Dissenting Stockholder") and complies with all the provisions of  Delaware
Law concerning the right of holders NHL Shares to dissent from the Merger and
require appraisal of their NHL Shares ("Dissenting Shares") shall not be
converted as described in Section 1.2(a) but shall become the right to
receive such consideration as may be determined to be due to such
Dissenting Stockholder pursuant to Delaware Law.  If, after the Effective
Time, such Dissenting Stockholder withdraws his demand for appraisal or
fails to perfect or otherwise loses his right to appraisal, in any case
pursuant to Delaware Law, his NHL Shares shall be deemed to be converted as
of the Effective Time into the Conversion Consideration.  NHL shall give
HLR (i) prompt notice of any demands for appraisal of NHL Shares received
by NHL and (ii) the opportunity to participate in and direct all
negotiations and proceedings with respect to any such demands.  NHL shall
not, without the prior written consent of HLR, make any payment with
respect to, or settle, offer to settle or otherwise negotiate, any such
demands.

         SECTION 1.3.   Surrender and Payment.  (a)  Prior to the Effective
Time, HLR and NHL shall appoint a mutually acceptable bank or trust company as
agent (the "Exchange Agent") for the purpose of exchanging certificates in
connection with the NHL Share Conversion in accordance with the terms of this
Agreement.  At or prior to the Effective Time, HLR shall deposit in trust with
the Exchange Agent $135,651,100 (the  "HLR Cash Consideration").  At or prior
to the Effective Time, Roche shall provide to NHL $51,048,900 (the "Roche
Warrant Consideration") in respect of Roche's purchase of 8,325,000 Warrants
(as defined in Section 1.4(a)) pursuant to Section 1.4(b)  (the "Roche
Warrants").  At or prior to the Effective Time, NHL shall, subject to
Section 7.2, deposit in trust with the Exchange Agent (x) $288,000,000 (the
"NHL Cash Consideration") and (y) the Roche Warrant Consideration received
from Roche.  The HLR Cash Consideration, the NHL Cash Consideration and the
Roche Warrant Consideration are referred to collectively as (the "Cash
Consideration Fund").  The Exchange Agent shall, pursuant to irrevocable
instructions, deliver the Cash Consideration contemplated to be issued as
part of the NHL Share Conversion out of the Cash Consideration Fund.  The
Cash Consideration Fund shall not be used for any other purpose.

         (b) As soon as reasonably practicable after the Effective Time, the
Surviving Corporation shall cause the Exchange Agent to mail to each holder
of record of a certificate or certificates which immediately prior to the
Effective Time represented outstanding shares of NHL Shares (the
"Certificates")  (i) a letter of transmittal (which shall specify that
delivery shall be effected, and risk of loss and title to the Certificates
shall pass, only upon delivery of the Certificates to the Exchange Agent
and shall be in such form and have such other provisions as NHL may
reasonably specify) and (ii) instructions for use in effecting the
surrender of the Certificates in exchange for certificates representing the
NHL Shares and Cash Consideration into which such Certificates shall have
been converted pursuant to the NHL Share Conversion.  Upon surrender of a
Certificate for cancellation to the Exchange Agent or to such other agent
or agents as may be appointed by NHL, together with such letter of
transmittal, duly executed, and such other documents as may reasonably be
required by the Exchange Agent, the holder of such Certificate shall be
entitled to receive in exchange therefor a certificate representing that
number of NHL Shares and the Cash Consideration which such holder has the
right to receive pursuant to the provisions of this Article (and cash, if
any, in lieu of fractional shares pursuant to Section 1.2(d)).  In the
event of a transfer of ownership of NHL Shares which is not registered in
the transfer records of NHL, a certificate representing the proper number
of shares of NHL Shares may be issued and the Cash Consideration may be
paid (and cash, if any, in lieu of fractional shares) to a Person other
than the Person in whose name the Certificate so surrendered is registered,
if such Certificate shall be properly endorsed or otherwise be in proper
form for transfer and the Person requesting such payment shall pay any
transfer or other taxes required by reason of the issuance of NHL Shares
and payment of Cash Consideration (and cash, if any, in lieu of fractional
shares) to a Person other than the registered holder of such Certificate or
establish to the satisfaction of HLR that such tax has been paid or is not
applicable.  Until surrendered as contemplated by this Section 1.3, each
Certificate shall be deemed at any time after the Effective Time to
represent only the number of NHL Shares and the right to receive Cash
Consideration (and cash, if any, in lieu of fractional shares) to which
such holder is entitled pursuant to the NHL Share Conversion, and the
holder of such Certificate shall cease to have any rights with respect to
the number of NHL Shares represented by such Certificate immediately prior
to the Effective Time in excess of the number of NHL Shares to which such
holder is entitled pursuant to the NHL Share Conversion except as otherwise
provided herein or by law.  No interest will be paid or will accrue on any
Conversion Consideration (or cash, if any, payable in lieu of fractional
shares).

         (c) From and after the Effective Time, there shall be no further
registration of transfers of Certificates.

         (d) The Cash Consideration Fund and the Fractional Shares Fund shall
be invested by the Exchange Agent as directed by HLR in consultation with the
Surviving Corporation (so long as such directions do not impair the rights of
the holders of NHL Shares) in direct obligations of the United States of
America, obligations for which the full faith and credit of the United States
of America is pledged to provide for the payment of principal and interest,
commercial paper rated of the highest quality by Moody's Investors Services,
Inc. or Standard & Poor's Corporation or certificates of deposit issued by a
commercial bank having combined capital, surplus and undivided profits
aggregating at least $500,000,000 (provided that no such investment made prior
to the thirtieth day after the Effective Time shall mature more than seven
days after such investment is made), and any net earnings with respect thereto
shall be paid to the Surviving Corporation as and when requested by the
Surviving Corporation.

         (e) Any portion of the Cash Consideration Fund and the Fractional
Shares Fund which remains undistributed six months after the Effective Time
shall be delivered to the Surviving Corporation upon demand, and any holders
of such NHL Shares who have not theretofore complied with this Article 1 shall
thereafter look only to the Surviving Corporation for the Cash Consideration
(and cash, if any, payable in lieu of fractional shares) to which they are
entitled.

         (f) Neither HLR nor the Surviving Corporation shall be liable to any
holder of NHL Shares for any such Cash Consideration (or cash, if any, payable
in lieu of fractional shares) or any certificates for any NHL Shares delivered
to a public official pursuant to any applicable abandoned property, escheat or
similar law.

        (g) The Surviving Corporation shall be entitled to deduct and withhold
from the Cash Consideration (and cash, if any, payable in lieu of fractional
shares) otherwise payable pursuant to this Agreement to any holder of NHL
Shares such amounts as the Surviving Corporation is required to deduct and
withhold with respect to the making of such payment under the Code, or any
provision of state, local or foreign tax law.  To the extent that amounts are
so withheld, such withheld amounts shall be treated for all purposes of this
Agreement as having been paid to the holder of such NHL Shares in respect of
which such deduction and withholding was made by the Surviving Corporation.

         SECTION 1.4.   Warrants.  (a)  NHL currently intends to declare a
dividend payable to holders of NHL Common Stock of record as of the third
Business Day prior to the date of the NHL Stockholder Meeting, which dividend
shall consist of .16308 of a warrant for each NHL Share outstanding on such
date, each such Warrant (a "Warrant" and together with the Roche Warrants, the
"Warrants") representing the right to purchase one newly issued share of NHL
Common Stock and which shall be in the form and have substantially the terms
and conditions set forth in the Warrant Agreement to be entered into between
NHL and a warrant agent, which Warrant Agreement shall be satisfactory to NHL
and to Roche (the "Warrant Agreement").  The Warrant Agreement will contain
customary terms and conditions and will provide, among other things, for the
issuance of the Warrants to be dividended to holders of record of NHL Common
Stock on the third Business Day preceding the date of the NHL Stockholder
Meeting, for the issuance of the Roche Warrants, that each Warrant may be
exercised on the fifth anniversary (the "Expiration Date") of issuance to
purchase one share of Common Stock at a purchase price of $22.00 per share
(subject to adjustments), and that NHL shall have the option, exercisable by
notice 60 days prior to the Expiration Date, to redeem the Warrants on the
Expiration Date for a cash redemption price per Warrant equal to the average
closing price of the NHL Common Stock over a specified period prior to the
Expiration Date minus the exercise price.  It is understood and agreed by the
parties hereto that the representations and warranties of NHL with respect to
the Warrant Agreement set forth in Article 3 hereof are based upon the
assumption that the Warrant Agreement will conform to the description set
forth in the preceding sentence.

         (b) At or prior to the Effective Time, Roche shall cause to be
delivered to NHL an amount in cash equal to the Roche Warrant Consideration in
payment of the aggregate purchase price of $51,048,900 payable in respect of
the Roche Warrants. In consideration of receipt of such payment, NHL shall
issue and deliver to Roche pursuant to the Warrant Agreement a warrant
certificate or certificates (in such denominations as requested by Roche)
representing the Roche Warrants so purchased.

         SECTION 1.5.   Stock Options.  (a)  Each employee stock option or
right to acquire NHL Shares under NHL's 1988 and 1994 Stock Option Plans (such
rights being referred to as "Employee Stock Options") outstanding on the date
hereof shall be deemed fully vested and, immediately prior to the Effective
Time, NHL shall use reasonable efforts, including with respect to obtaining
consents, to cause each Employee Stock Option to be canceled and terminated in
exchange for an amount in cash and NHL Shares (in the proportions set forth
below) equal to the product of (i) the number of NHL Shares subject to such
Employee Stock Option immediately prior to the Effective Time and (ii) the
excess of (1) $18.50 over (2) the per share exercise price of such Employee
Stock Option (such product, the "Option Value Amount").  The Option Value
Amount shall be payable at the Effective Time as follows: 40% of such amount
(the "Option Cash Amount") shall be payable in cash, and 60% of such amount
(the "Option Stock Amount") shall be payable in the number of NHL Shares
obtained by dividing the Option Stock Amount by $15.42; provided that any
fractional share resulting from such calculation shall be paid in cash, with
the value of a whole share for such purpose assumed to be $15.42.  All amounts
payable to this Section 1.5(a) shall be subject to any required withholding
of taxes and shall be paid without interest thereon.

         (b) Notwithstanding the foregoing Section 1.5(a), the Employee Stock
Options with respect to which the requisite consents are not obtained shall
not be canceled, but instead shall be immediately converted as of the
Effective Time into the right ("Adjusted Option") to purchase the Option
Conversion Number (as defined below) of NHL Shares.  Each Adjusted Option
will have substantially the same terms as the Employee Stock Option to
which it is related, except that:  (i) the Adjusted Option shall be deemed
fully vested and (ii) the exercise price of an Adjusted Option shall be an
amount equal to the exercise price of the Employee Stock Option related to
such Adjusted Option as of the date of this Agreement divided by the
Conversion Number (as defined below).  The "Option Conversion Number" for
any Adjusted Option shall be equal to the number of NHL Shares purchasable
pursuant to the Employee Stock Option related to such Adjusted Option as of
the date of this Agreement multiplied by the Conversion Number.  The
"Conversion Number" shall be a number equal to (i) the sum of (x) the
product of (A) the average closing price of a share of NHL Common Stock on
the NYSE Composite Tape for the period of five consecutive trading days
beginning on the trading day following the date on which the Effective Time
occurs (the "Post Merger Value") and (B) 0.72 and (y) $6.60 divided by (ii)
the Post Merger Value.


                                   ARTICLE 2
                           THE SURVIVING CORPORATION

         SECTION 2.1.   Certificate of Incorporation.  The certificate of
incorporation of NHL in effect at the Effective Time shall, except as may be
amended to give effect, as necessary, to the provisions of this Agreement and
the HLR Stockholder Agreement,  be the certificate of incorporation of the
Surviving Corporation until amended in accordance with applicable law.

         SECTION 2.2.   Bylaws.  The bylaws of NHL in effect at the Effective
Time shall, except as may be amended to give effect, as necessary, to the
provisions of this Agreement and the HLR Stockholder Agreement, be the bylaws
of the Surviving Corporation until amended in accordance with applicable law.

         SECTION 2.3.   Directors and Officers.  From and after the Effective
Time, (i) the number of directors constituting the Board of Directors of NHL
shall be seven and shall be comprised of three members designated by HLR and
four persons who are mutually acceptable to NHL and HLR, until successors are
duly elected or appointed and qualified in accordance with applicable law and
the HLR Stockholder Agreement, and (ii) the executive officers of the
Surviving Corporation shall be such Persons as are identified on a certificate
delivered by HLR to NHL prior to the Effective Time, which certificate, upon
the delivery thereof, shall be deemed to be incorporated into this Agreement
for purposes hereof.


                                   ARTICLE 3
                     REPRESENTATIONS AND WARRANTIES OF NHL

         NHL represents and warrants to RBL and HLR that, except as set forth
on the disclosure schedule delivered by NHL to HLR prior to the execution of
this Agreement (the "NHL Disclosure Schedule"):

         SECTION 3.1.   Corporate Existence and Power.  NHL is a corporation
duly incorporated, validly existing and in good standing under the laws of the
jurisdiction in which it is incorporated and has all corporate powers required
to carry on its business as now being conducted.  NHL is duly qualified to do
business as a foreign corporation and is in good standing in each jurisdiction
where the character of the property owned or leased by it or the nature of its
activities makes such qualification necessary, except for those jurisdictions
where the failure to be so qualified would not, individually or in the
aggregate, have a material adverse effect on the business, financial
condition, assets, results of operations or prospects of NHL and its
Subsidiaries, taken as a whole (an "NHL Material Adverse Effect"), or NHL's
ability to perform its obligations under this Agreement, the HLR Stockholder
Agreement, the Warrant Agreement or the Sharing and Call Option Agreement.
NHL has heretofore delivered to HLR true and complete copies of its
certificate of incorporation and bylaws and the certificate of incorporation
and bylaws of each of its Subsidiaries, in each case as currently in effect.
For purposes of this Agreement, "Subsidiary" of any Person means any entity of
which securities or other ownership interests having ordinary voting power to
elect a majority of the board of directors or other Persons performing similar
functions are directly or indirectly owned by such Person.  For purposes of
this Agreement, a "Significant Subsidiary" of a Person means any Subsidiary of
such Person that constitutes a Significant Subsidiary within the meaning of
Rule 1-02 of Regulation S-X of the Securities and Exchange Commission (the
"SEC").

         SECTION 3.2.   Corporate Authorization.  The execution, delivery and
performance by NHL of this Agreement, the HLR Stockholder Agreement, the
Warrant Agreement and the Sharing and Call Option Agreement, the consummation
by NHL of the transactions contemplated hereby (including, without limitation,
the Merger, the delivery of the Conversion Consideration, the issuance of the
HLR-NHL Shares and of the Warrants and the NHL Common Stock issuable
thereunder) and thereby are within NHL's corporate powers and, except for any
required approval by NHL's stockholders in connection with the consummation of
the Merger (including any amendments to NHL's certificate of incorporation as
referred to in Section 2.1 and the treatment of the Employee Stock Options as
referred to in Section 1.5) have been duly authorized by all necessary
corporate action.  Each of this Agreement and the Sharing and Call Option
Agreement constitutes, and each of the HLR Stockholder Agreement, and the
Warrant Agreement when executed and delivered by NHL, will constitute, a
valid and binding agreement of NHL.

         SECTION 3.3.   Governmental Authorization.  The execution, delivery
and performance by NHL of this Agreement, the HLR Stockholder Agreement, the
Warrant Agreement and the Sharing and Call Option Agreement, and the
consummation by NHL of the transactions contemplated hereby (including,
without limitation, the Merger, the delivery of the Conversion Consideration,
the issuance of the HLR-NHL Shares and of the Warrants and the NHL Common
Stock issuable thereunder) and thereby require no action by, or filing with,
any governmental body, agency, official or authority other than (i) the filing
of a certificate of merger in accordance with Delaware Law and any amendments
to NHL's certificate of incorporation as referred to in Section 2.1, (ii)
compliance with any applicable requirements of the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), (iii) compliance with
any applicable requirements of the Securities Exchange Act of 1934, as amended
(the "1934 Act"), (iv) compliance with any applicable requirements of the
Securities Act of 1933, as amended (the "1933 Act"), (v) compliance with any
applicable foreign or state securities or "blue sky" laws and (vi) such
actions by or filings with governmental bodies, agencies, officials or
authorities, the failure of which to obtain or make would not reasonably be
expected to have, individually or in the aggregate (A) an NHL Material Adverse
Effect, (B) impair the ability of NHL to perform its obligations under this
Agreement, the HLR Stockholder Agreement, the Warrant Agreement or the Sharing
and Call Option Agreement, or (C) prevent the consummation of any of the
transactions contemplated by this Agreement, the HLR Stockholder Agreement,
the Warrant Agreement or the Sharing and Call Option Agreement.

         SECTION 3.4.   Non-Contravention.  The execution, delivery and
performance by NHL of this Agreement, the HLR Stockholder Agreement, the
Warrant Agreement and the Sharing and Call Option Agreement do not, and the
consummation by NHL of the transactions contemplated hereby and thereby do not
and will not (i) contravene or conflict with the certificate of incorporation
(taking into account appropriate amendments contemplated by Section 2.1
hereof) or the bylaws of NHL or the organizational documents of any of its
Subsidiaries, (ii) assuming compliance with the matters referred to in
Section 3.3, contravene or conflict with or constitute a violation of any
provision of any law, regulation, judgment, injunction, order or decree
binding upon or applicable to NHL or any of its Subsidiaries, (iii)
constitute a default under or give rise to a right of termination,
cancellation or acceleration of any right or obligation of NHL or any of
its Subsidiaries or to a loss of any benefit to which NHL or any of its
Subsidiaries is entitled under any provision of any agreement, contract or
other instrument binding upon NHL or any of its Subsidiaries or any
license, franchise, permit or other similar authorization held by NHL or
any of its Subsidiaries, or (iv) result in the creation or imposition of
any Lien on any asset of NHL or any of its Subsidiaries, except, with
respect to clauses (ii), (iii) and (iv) above, for contraventions,
conflicts, defaults, rights of termination, cancellation or acceleration,
losses of benefits and creation or imposition of Liens that would not
reasonably be expected to have, individually or in the aggregate, an NHL
Material Adverse Effect.  For purposes of this Agreement, "Lien" means,
with respect to any asset, any mortgage, lien, pledge, charge, security
interest or encumbrance of any kind in respect of such asset.

         SECTION 3.5.   Capitalization.  The authorized capital stock of NHL
consists of 10,000,000 shares of preferred stock, par value $0.10 per share
("NHL Preferred Stock"), and 220,000,000 NHL Shares.  As of December 12, 1994,
(a) there were issued and outstanding 84,761,817 NHL Shares and no shares of
NHL Preferred Stock, (b) no NHL Shares were held in NHL's treasury and (c)
1,756,507 NHL Shares were reserved for issuance upon exercise of outstanding
Employee Stock Options (of which options to purchase an aggregate of 3,527,876
NHL Shares were vested and exercisable).  All outstanding shares of capital
stock of NHL are validly issued, fully paid and nonassessable and free and
clear of any preemptive or similar rights.  All shares of NHL Common Stock
issuable as HLR-NHL Shares in the Merger and all shares of NHL Common Stock
issuable upon exercise of the Warrants will be, upon issuance thereof, validly
issued, fully paid and nonassessable and free of any preemptive or similar
rights.  Except as set forth in this Section 3.5, and except for the exercise or
conversion of Employee Stock Options outstanding on December 12, 1994 there
are outstanding (i) no shares of capital stock or other voting securities of
NHL, (ii) no securities of NHL convertible into or exchangeable for shares of
capital stock or voting securities of NHL and (iii) no options or other rights
to acquire from NHL, and no obligation of NHL to issue, any capital stock,
voting securities or securities convertible into or exchangeable for capital
stock or other voting securities of NHL (the items in clauses (i), (ii) and
(iii) above being referred to collectively as the "NHL Securities").  There
are no outstanding obligations of NHL or any of its Subsidiaries to
repurchase, redeem or otherwise acquire any NHL Securities.

         SECTION 3.6.   Subsidiaries.  (a)  Each Subsidiary of NHL is a
corporation duly incorporated, validly existing and in good standing under the
laws of its jurisdiction of incorporation, has all corporate powers required
to carry on its business as now being conducted and is duly qualified to do
business as a foreign corporation and is in good standing in each jurisdiction
where the character of the property owned or leased by it or the nature of its
activities make such qualification necessary, except for those jurisdictions
where failure to be so qualified would not, individually or in the aggregate,
have an NHL Material Adverse Effect.  NHL has delivered to HLR a list of all
of NHL's Subsidiaries.  There are no partnerships or joint venture
arrangements or other business entities in which NHL or any Subsidiary of NHL
owns an equity interest that is material to the business of NHL and its
Subsidiaries, taken as a whole.

         (b) All of the outstanding capital stock of each Subsidiary of NHL is
owned by NHL, directly or indirectly, free and clear of any Lien and free of
any other limitation or restriction (including any restriction on the right to
vote, sell or otherwise dispose of such capital stock) other than any such
limitations or restrictions imposed by statutes or regulations of general
applicability.  There are no outstanding (i) securities of NHL or any of its
Subsidiaries convertible into or exchangeable for shares of capital stock or
other voting securities of any of NHL's Subsidiaries, or (ii) options or other
rights to acquire from NHL or any Subsidiary, and no other obligation of NHL
or any Subsidiary of NHL to issue, any capital stock, voting securities of, or
any securities convertible into or exchangeable for any capital stock or other
voting securities of any Subsidiary of NHL (the items in clauses (i) and (ii)
being referred to collectively as the "NHL Subsidiary Securities").  There are
no outstanding obligations of NHL or any Subsidiary of NHL to repurchase,
redeem or otherwise acquire any outstanding NHL Subsidiary Securities.

         (c) Neither NHL nor any Affiliate of NHL:

             (i)  is currently engaged in the manufacture or production of
         drugs of abuse reagent products in the United States; or

            (ii)  owns presently (or has owned within the two-year period
         prior hereto):

                  (A) any stock, share capital, equity or other interest in
         any concern, corporate or non-corporate, engaged in at the time of
         such acquisition, or within the two years preceding such acquisition
         engaged in, the manufacture or production of drugs of abuse reagent
         products in the United States; or

                  (B) any assets used or previously used (and still suitable
         for use) in the manufacture and production of drugs of abuse reagent
         products in the United States to which annual sales of $3,000,000 or
         more of drugs of abuse reagent products are or in the past have been
         attributable.

         SECTION 3.7.   SEC Filings.  (a)  NHL has filed all required reports,
forms, and other documents with the SEC since January 1, 1992 (the "SEC
Documents").  As of their respective dates, the SEC Documents complied in all
material respects with the requirements of the 1933 Act or the 1934 Act, as
the case may be, and the rules and regulations of the SEC promulgated
thereunder applicable to such SEC Documents, and none of the SEC Documents
contained any untrue statement of a material fact or omitted to state a
material fact necessary in order to make the statements therein, in light of
the circumstances under which they were made, not misleading.  Except to the
extent that information contained in any SEC Document has been revised or
superseded by a later-filed SEC Document filed and publicly available prior to
the date hereof, none of the SEC Documents contains any untrue statement of a
material fact or omits to state any material fact required to be stated
therein or necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading.

        (b) No such registration statement referred to in Section 3.7(a), as
amended or supplemented, if applicable, filed pursuant to the 1933 Act as
of the date such statement or amendment became effective contained any
untrue statement of a material fact or omitted to state any material fact
required to be stated therein or necessary to make the statements therein
not misleading.

         SECTION 3.8.   Financial Statements.  The financial statements of NHL
included in the SEC Documents comply as to form in all material respects with
applicable accounting requirements and the published rules and regulations of
the SEC with respect thereto, have been prepared in accordance with generally
accepted accounting principles ("GAAP") (except, in the case of unaudited
statements, as permitted by Form 10-Q of the SEC) applied on a consistent
basis during the periods involved (except as may be indicated in the notes
thereto) and fairly present the consolidated financial position of NHL and its
consolidated Subsidiaries as of the dates thereof and the consolidated results
of their operations and cash flows for the periods then ended (subject, in the
case of unaudited statements, to normal year-end audit adjustments).

         SECTION 3.9.   Disclosure Documents.  (a)  None of the information
supplied or to be supplied by NHL specifically for inclusion or incorporation
by reference in (i) the registration statement on Form S-4 to be filed with
the SEC by NHL in connection with the issuance of NHL Shares in the Merger
(the "Registration Statement", which Registration Statement will include a
resale prospectus) will, at the time the Registration Statement is filed with
the SEC, at any time it is amended or supplemented or at the time it becomes
effective under the 1933 Act, contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary
to make the statements therein not misleading, or (ii) the proxy statement
relating to the approval by the stockholders of NHL of the Merger and certain
other matters, together with all other related proxy materials prepared in
connection with the NHL Stockholder Meeting relating to the Merger (the "NHL
Proxy Statement") will, at the date the NHL Proxy Statement is first mailed to
NHL's stockholders or at the time of the NHL Stockholder Meeting, contain any
untrue statement of a material fact or omit to state any material fact
necessary in order to make the statements therein, in light of the
circumstances  under which they were made, not misleading.  The Registration
Statement will comply as to form in all material respects with the
requirements of the 1933 Act and the rules and regulations promulgated
thereunder and the NHL Proxy Statement will comply as to form in all material
respects with the requirements of the 1934 Act and the rules and regulations
promulgated thereunder.

        (b) The representations and warranties contained in Sections 3.9(a)
will not apply to statements included in or omissions from the Registration
Statement or the NHL Proxy Statement based upon information furnished to
NHL by or on behalf of HLR or RBL specifically for use therein or
information that is omitted by HLR or RBL.

         SECTION 3.10.  Absence of Certain Changes.  Except as disclosed in
the SEC Documents, since December 31, 1993 NHL has conducted its business only
in the ordinary course, and except as specifically contemplated by this
Agreement there has not been:

         (a) any material adverse change in the business, financial condition,
assets or results of operations of NHL and its Subsidiaries, taken as a whole,
or any event, occurrence or development of or in a state of circumstances or
facts (including, without limitation, any development of or in a state of
facts or any change in the estimated or expected exposure arising or occurring
after the date hereof relating to any litigation or investigation
disclosed, or required to be disclosed, pursuant to Section 3.12 or Section
5.5 hereof or in any SEC Document referred to in Section 3.12) known to NHL
or any Subsidiary of NHL which could reasonably be expected to result in
such a material adverse change (an "NHL Material Adverse Change");

         (b)any declaration, setting aside or payment of any dividend or other
distribution with respect to any shares of capital stock of NHL, or any
repurchase, redemption or other acquisition by NHL or any of its Subsidiaries
of any outstanding shares of capital stock or other securities of, or other
ownership interests in, NHL or any of its Subsidiaries;

         (c)any amendment of any material term of any outstanding NHL
Securities or any NHL Subsidiary Securities;

         (d)any incurrence, assumption or guarantee by NHL or any of its
Subsidiaries of any indebtedness for borrowed money other than in the ordinary
course of business and in an amount not in excess of $25,000,000 and which is
on terms consistent with past practices;

         (e)any creation or assumption by NHL or any of its Subsidiaries of
any Lien on any material asset other than in the ordinary course of business
consistent with past practices;

         (f)any making of any loan, advance or capital contributions to or
investment in any Person other than loans, advances or capital contributions
to or investments in wholly-owned Subsidiaries made in the ordinary course of
business consistent with past practices;

         (g)any damage, destruction or other casualty loss (whether or not
covered by insurance) affecting the business or assets of NHL or any of its
Subsidiaries which, individually or in the aggregate, has had or would
reasonably be expected to have an NHL Material Adverse Effect;

         (h)any transaction or commitment made, or any contract or agreement
entered into, by NHL or any of its Subsidiaries relating to its assets or
business (including the acquisition or disposition of any assets) or any
relinquishment by NHL or any of its Subsidiaries of any contract or other
right, in either case, material to NHL and its Subsidiaries taken as a whole,
other than transactions and commitments in the ordinary course of business
consistent with past practice;

         (i)any change in any method of accounting or accounting practice by
NHL or any of its Subsidiaries, except for any such change required by reason
of a concurrent change in GAAP or which is disclosed in the SEC Documents;

         (j)any (i) grant of any severance or termination pay other than
pursuant to existing contracts, plans or arrangements to any director, officer
or employee of NHL or any of its Subsidiaries whose total annual compensation
and bonus is in excess of $200,000, (ii) entering into of any employment,
deferred compensation or other similar agreement (or any amendment to any such
existing agreement) involving annual total compensation and bonus in excess of
$200,000 with any director, officer or employee of NHL or any of its
Subsidiaries, (iii) any amendment or change that increases compensation or
benefits payable under any existing severance or termination pay plans,
policies or employment agreements which change or amendment is applicable to a
class or classes of employees or officers covered thereby other than as
expressly required therein or (iv) increase in compensation, bonus or other
benefits payable to directors, officers or employees of NHL or any of its
Subsidiaries, whose total annual compensation and bonus is in excess of
$200,000, except as expressly required by any existing employment agreements,
or pursuant to compensation plans and policies in effect December 31, 1993 or
set forth on the NHL Disclosure Schedule; or

         (k)any labor dispute, other than routine individual grievances, or
any activity or proceeding by a labor union or representative thereof to
organize any employees of NHL or any of its Subsidiaries, which employees were
not subject to a collective bargaining agreement prior to or on December 31,
1993, or any lockouts, strikes, slowdowns, work stoppages or threats thereof
by or with respect to such employees.

         SECTION 3.11.  No Undisclosed Material Liabilities.   Except as set
forth in the SEC Documents, neither NHL nor any of its Subsidiaries has any
liabilities or obligations of any nature (whether accrued, absolute,
contingent or otherwise) ("Liabilities") required by GAAP to be set forth on a
consolidated balance sheet of NHL and its consolidated Subsidiaries or in the
notes thereto and neither NHL nor any of its Subsidiaries has, to the
knowledge of NHL, incurred any Liabilities since December 31, 1993 which,
whether or not required by GAAP to be set forth on such a consolidated balance
sheet, when considered together with any corresponding asset resulting from
the event which gave rise to such liability, individually or in the aggregate,
have had or could reasonably be expected to have an NHL Material Adverse
Effect.

         SECTION 3.12.  Litigation.  Except as set forth in the SEC Documents,
there is no action, suit, investigation or proceeding pending, or to the
knowledge of NHL threatened (or, to the knowledge of NHL or its Subsidiaries,
any basis therefor), against NHL or any of its Subsidiaries or any of their
respective properties before any court or arbitrator or any governmental body,
agency or official that could reasonably be expected to (A) have an NHL
Material Adverse Effect, (B) impair the ability of NHL to perform its
obligations under this Agreement, the HLR Stockholder Agreement, the Warrant
Agreement or the Sharing and Call Option Agreement or (C) prevent or
materially delay the consummation of any of the transactions contemplated by
this Agreement, the HLR Stockholder Agreement, the Warrant Agreement or the
Sharing and Call Option Agreement.

         SECTION 3.13.  Taxes.  Except as set forth in the SEC Documents, (a)
NHL, its Subsidiaries and the NHL Group (as defined in Section 8.1) have filed,
been included in or sent, all material returns, declarations and reports and
information returns and statements required to be filed or sent by or relating
to any of them relating to any Taxes (as defined below) with respect to any
material income, properties or operations of NHL, any of its Subsidiaries or
the NHL Group prior to the Effective Time (collectively, "NHL Returns"), (b)
as of the time of filing, the NHL Returns correctly reflected in all material
respects the facts regarding the income, business, assets, operations,
activities and status of NHL, its Subsidiaries and the NHL Group and any other
information required to be shown therein, (c) NHL, its Subsidiaries and the
NHL Group have timely paid or made provision for all material Taxes that have
been shown as due and payable on the NHL Returns that have been filed, (d)
NHL, its Subsidiaries and the NHL Group have made or will make provision for
all material Taxes payable for any periods that end before the Effective Time
for which no NHL Returns have yet been filed and for any periods that begin
before the Effective Time and end after the Effective Time to the extent such
Taxes are attributable to the portion of any such period ending at the
Effective Time, (e) the charges, accruals and reserves for Taxes reflected on
the books of NHL, its Subsidiaries and the NHL Group are adequate to cover the
Tax liabilities accruing or payable by NHL, its Subsidiaries and the NHL Group
in respect of periods prior to the date hereof, (f) none of NHL, any of its
Subsidiaries or the NHL Group is delinquent in the payment of any material
Taxes or has requested any extension of time within which to file or send any
material NHL Return, which NHL Return has not since been filed or sent, (g) no
material deficiency for any Taxes has been proposed, asserted or assessed in
writing against NHL, any of its Subsidiaries or the NHL Group other than those
Taxes being contested in good faith, (h) the federal income tax returns of the
NHL Group have been examined by and settled with the Internal Revenue Service
(the "IRS") for all years through 1984, (i) none of NHL, any of its
Subsidiaries or the NHL Group has granted any extension of the limitation
period applicable to any material Tax claims (which period has not since
lapsed) other than those Taxes being contested in good faith, (j) none of NHL,
any of its Subsidiaries or the NHL Group has any contractual obligations under
any material Tax sharing agreement with any corporation which, as of the
Effective Time, is not a member of the NHL Group, and (k) neither NHL nor any
of its Subsidiaries has taken any action or has any knowledge of any fact or
circumstance that is reasonably likely to prevent the Merger from qualifying
as a reorganization within the meaning of Section 368(a)(1) of the Code.

         "Tax" or "Taxes" means with respect to any Person (i) any net income,
gross income, gross receipts, sales, use, ad valorem, franchise, profits,
license, withholding, payroll, employment, excise, severance, stamp,
occupation, premium, property, value-added  or windfall profit tax, custom
duty or other tax, governmental fee or other like assessment or charge of any
kind whatsoever, together with any interest and any penalty, addition to tax or
additional amount imposed by any taxing authority (domestic or foreign) on
such Person and (ii) any liability of such Person or any of its Subsidiaries
for the payment of any amount of the type described in clause (i) as a result
of being a member of an affiliated or combined group.

         SECTION 3.14.  ERISA.  (a) The NHL Disclosure Schedule identifies each
"employee benefit plan", as defined in Section 3(3) of the Employee Retirement
Income Security Act of 1974 ("ERISA"), which (i) is subject to any provision
of ERISA and (ii) is maintained, administered or contributed to by NHL or any
ERISA Affiliate (as defined below) and covers any employee or former employee
of NHL or any Subsidiary of NHL or under which NHL or any ERISA Affiliate has
any liability.  Copies of such plans (and, if applicable, related trust
agreements, group annuity contracts and summary plan descriptions) and all
amendments thereto and written interpretations thereof have been furnished or
made available upon request to HLR and RBL together with (x) the most recent
annual report (Form 5500 including, if applicable, Schedule B thereto)
prepared in connection with any such plan and (y) the most recent actuarial
valuation report prepared in connection with any such plan.  Such plans are
referred to collectively herein as "NHL Employee Plans".  For purposes of this
Section, "ERISA Affiliate" of any Person means any other Person which,
together with such Person, would be treated as a single employer under Section
414 of the Code.

         (b)Except as otherwise identified in the NHL Disclosure Schedule:

             (i)  no NHL Employee Plan constitutes a "multiemployer plan", as
      defined in Section 3(37) of ERISA (a "Multiemployer Plan"), and no NHL
      Employee Plan is maintained in connection with any trust described in
      Section 501(c)(9) of the Code;

            (ii)  no NHL Employee Plans are subject to Title IV of ERISA (the
      "NHL Retirement Plans");

           (iii)  as of December 31, 1993, the fair market value of the assets
      of each NHL Retirement Plan (excluding for these purposes any accrued
      but unpaid contributions) exceeded the accumulated benefit obligation,
      as determined in accordance with GAAP, under such NHL Retirement Plan;

            (iv)  no "accumulated funding deficiency", as defined in Section
      412 of the Code, has been incurred with respect to any NHL Retirement
      Plan, whether or not waived;

             (v)  no "reportable event", within the meaning of Section 4043 of
      ERISA, and no event described in Section 4041, 4042, 4062 or 4063 of
      ERISA has occurred in connection with any NHL Employee Plan, other than
      a "reportable event" that will not have an NHL Material Adverse Effect;

            (vi)  no condition exists and no event has occurred that could
      constitute grounds for termination of any NHL Retirement Plan or, with
      respect to any NHL Employee Plan which is a Multiemployer Plan, presents
      a material risk of a complete or partial withdrawal under Title IV of
      ERISA;

           (vii)  neither NHL nor any of its ERISA Affiliates has incurred any
      material liability under Title IV of ERISA arising in connection with
      the termination of, or complete or partial withdrawal from, any plan
      covered or previously covered by Title IV of ERISA;

          (viii)  if a "complete withdrawal" by NHL and all of its ERISA
      Affiliates were to occur as of the Effective Time with respect to all
      NHL Employee Plans which are Multiemployer Plans, neither NHL nor any
      ERISA Affiliate would incur any withdrawal liability under Title IV of
      ERISA;

            (ix)  nothing done or omitted to be done and no transaction or
      holding of any asset under or in connection with any NHL Employee Plan
      has made or will make NHL or any of its Subsidiaries, any officer or
      director of NHL or any of its Subsidiaries subject to any liability
      under Title I of ERISA or liable for any Tax pursuant to Section 4975 of
      the Code that could have an NHL Material Adverse Effect; and

             (x)  neither NHL nor any of its ERISA Affiliates (A) has engaged
      in a transaction described in Section 4069 of ERISA that could subject
      NHL to material liability at any time after the date hereof or (B) has
      acted in a manner that could, or failed to act so as to, result in
      fines, penalties, taxes or related charges under (x) Section 502(c), (i)
      or (1) or ERISA, (y) Section 4071 of ERISA or (z) Chapter 43 of the
      Code, which penalties, taxes or related charges, individually or in the
      aggregate, would constitute a liability in a material amount.

         (c)Each NHL Employee Plan which is intended to be qualified under
Section 401(a) of the Code has received a favorable IRS determination letter
to such effect and NHL knows of no event or circumstance occurring or existing
since the date of such letter that would adversely affect such NHL Employee
Plan's qualified status.  NHL has furnished or made available upon request to
HLR and RBL copies of the most recent IRS determination letters with respect
to each such Plan.  Each NHL Employee Plan has been maintained in substantial
compliance with its terms and with the requirements prescribed by any and all
statutes, orders, rules and regulations, including but not limited to ERISA
and the Code, which are applicable to such Plan.  There are no investigations
by any governmental agency, termination proceedings or other claims (except
claims for benefits payable in the normal operation of the NHL Employee
Plans), suits or proceedings against or involving any NHL Employee Plan or
asserting any rights to or claims for benefits under any NHL Employee Plan
that could give rise to any material liability, and there are not any facts
that could give rise to any material liability in the event of any such
investigation, claim, suit or proceeding.

         (d)There is no contract, agreement, plan or arrangement covering any
employee or former employee of NHL or any ERISA Affiliate that, individually
or collectively, could give rise to the payment of any amount that would not
be deductible pursuant to the terms of Section 280G of the Code.  No employee
of NHL or any of its Subsidiaries will be entitled to any additional benefits
or any acceleration of the time of payment or vesting of any NHL benefits
under any NHL Benefit Arrangements (as defined below in Section3.14(e)) as
a result of the transactions contemplated by this Agreement.

         (e)NHL has furnished or made available upon request to RBL copies or
descriptions of each employment, severance or other similar contract,
arrangement or policy providing for annual compensation in excess of $200,000
and each plan or arrangement (written or oral) providing for insurance
coverage (including any self-insured arrangements), workers' compensation,
disability benefits, supplemental unemployment benefits, vacation benefits,
retirement benefits or for deferred compensation, profit-sharing, bonuses,
stock options, stock appreciation or other forms of incentive compensation or
post-retirement insurance, compensation or benefits which (i) is not an
Employee Plan, (ii) is entered into, maintained or contributed to, as the case
may be, by NHL or any of its Subsidiaries and (iii) covers any employee or
former employee of NHL or any of its Subsidiaries, to the extent existing on
the date hereof.  The above arrangements (whether or not existing as of the
date hereof) are referred to collectively herein as the "NHL Benefit
Arrangements").  Each NHL Benefit Arrangement has been maintained in
substantial compliance with its terms and with the requirements prescribed by
any and all statutes, orders, rules and regulations that are applicable to
such NHL Benefit Arrangement.

         (f)Except as disclosed in the NHL Disclosure Schedule, neither NHL
nor any of its Subsidiaries has any current or projected liability in respect
of post-employment or post-retirement health and medical benefits for retired
or former employees of NHL and its Subsidiaries, except as required to avoid
excise tax under Section 4980B of the Code; and no condition exists that would
prevent NHL or any of its Subsidiaries from amending or terminating any NHL
Employee Plan or NHL Benefit Arrangement providing health or medical benefits
in respect of any active employee of NHL or any of its Subsidiaries other than
limitations imposed under the terms of a collective bargaining agreement.

         (g)Except as disclosed in the NHL Disclosure Schedule, there has been
no amendment to, written interpretation or announcement (whether or not
written) by NHL or any of its ERISA Affiliates relating to, or change in
employee participation or coverage under, any NHL Employee Plan or NHL Benefit
Arrangement which would increase materially the expense of maintaining such
NHL Employee Plan or NHL Benefit Arrangement above the level of the expense
incurred in respect thereof for the fiscal year ended on December 31, 1993
(other than those that would not result in the representation and warranty set
forth in Section 3.10(j) becoming untrue as of the Effective Time).

         (h)Neither NHL nor any of its Subsidiaries is a party to or subject
to any collective bargaining or other labor union contracts applicable to
persons employed by NHL or its Subsidiaries and no collective bargaining
agreement is being negotiated by NHL or any of its Subsidiaries.  As of the
date of this Agreement, to the knowledge of NHL, neither NHL nor its
Subsidiaries, nor their respective representatives or employees, has committed
any unfair labor practices in connection with the operation of the respective
businesses of NHL or its Subsidiaries, and there is no pending or threatened
in writing charge or complaint against NHL or its Subsidiaries by the National
Labor Relations Board (the "NLRB") or any comparable state agency, except
where such unfair labor practice, charge or complaint would not have an NHL
Material Adverse Effect.

         SECTION 3.15.  Compliance with Laws; Permits.  (a)  Except as set
forth in the SEC Documents and except for violations which do not have and
would not reasonably be expected to have, individually or in the aggregate, an
NHL Material Adverse Effect, neither NHL nor any of its Subsidiaries is in
violation of, or has violated, any applicable provisions of any laws,
statutes, ordinances or regulations or any term of any judgment, decree,
injunction or order outstanding against it.

         (b)As of the date of this Agreement, each of NHL and each of its
Subsidiaries is in possession of all franchises, grants, authorizations,
licenses, permits, easements, variances, exemptions, consents, certificates,
identification numbers, approvals and orders (collectively, the "NHL Permits")
necessary to own, lease and operate its properties and to carry on its
business as it is now being conducted, and there is no action, proceeding or
investigation pending or, to the knowledge of NHL, threatened regarding
suspension or cancellation of any of the NHL Permits, except where the failure
to possess, or the suspension or cancellation of, such NHL Permits would not
reasonably be expected to have, individually or in the aggregate, an NHL
Material Adverse Effect.

         SECTION 3.16.  Finders' Fees.  Except for Morgan Stanley & Co.
Incorporated ("Morgan Stanley"), whose fees in the amount previously disclosed
to HLR will be paid by NHL, and as contemplated herein, there is no investment
banker, broker, finder or other intermediary which has been retained by or is
authorized to act on behalf of, NHL or any of its Subsidiaries which might be
entitled to any fee or commission from HLR or any of its Affiliates upon
consummation of the transactions contemplated by this Agreement.

         SECTION 3.17.  Other Information.  NHL's projections and
forward-looking information furnished by NHL to HLR were prepared in good
faith and represent NHL's best estimate as of the date hereof as to the
subject matter thereof; provided that NHL makes no representation or warranty
as to the completeness or accuracy of the projections or forward-looking
information furnished by NHL to HLR.

         SECTION 3.18.  Environmental Matters.  Except as set forth in the SEC
Documents:

         (a)  (i) no notice, notification, notice of violation, demand,
request for information, investigation (whether civil or criminal),
citation, summons, complaint, order or other similar document has been
received by, or, to the knowledge of NHL or any of its Subsidiaries, is
pending or threatened by any Person against, NHL or any of its
Subsidiaries, nor has any material penalty been assessed against NHL or any
of its Subsidiaries in either case with respect to any (A) alleged
violation of any Environmental Law or liability thereunder, (B) alleged
failure to have any permit, certificate, license, approval, registration or
authorization required under any Environmental Law, (C) generation,
treatment, storage, recycling, transportation or disposal of any Hazardous
Substance or (D)  Release of any Hazardous Substance;

            (ii)  no Hazardous Substance has been Released or is present at
      any property now owned, leased or operated by NHL or any of its
      Subsidiaries nor, to the knowledge of NHL, has any Hazardous Substance
      been Released at any property formerly owned, leased or operated by NHL,
      which Release or presence, individually or in the aggregate, could
      reasonably be expected to result in an NHL Material Adverse Effect;

           (iii)  there are no NHL Environmental Liabilities that have had or
      may reasonably be expected to have, individually or in the aggregate, an
      NHL Material Adverse Effect; and

            (iv)  there are no circumstances relating to the disposal of
      Hazardous Substances from any properties at the time they were owned,
      leased or operated by NHL that could give rise to liabilities under
      Environmental Laws which could reasonably be expected to result in,
      individually or in the aggregate, an NHL Material Adverse Effect.

        (b) There has been no environmental investigation, study, audit, test,
review or other analysis conducted since 1989 of which NHL has knowledge in
relation to the current or prior business of NHL or any property or facility
now or previously owned, leased or operated by NHL or any of its Subsidiaries
the contents of which could reasonably be expected to result in an NHL
Material Adverse Effect.

        (c) Neither NHL nor any of its Subsidiaries owns or leases any real
property or an industrial facility, or conducts any operations, in New Jersey
or Connecticut.

        (d)  For purposes of this Section 3.18, the following terms shall
have the meanings set forth below:

             (i)  "NHL" and "Subsidiary" shall include any entity which is, in
      whole or in part, a predecessor of NHL or any of its Subsidiaries.

            (ii)  "NHL Environmental Liabilities" means any and all
      liabilities of or relating to NHL and any of its Subsidiaries, whether
      vested or unvested, contingent or fixed, actual or potential, known or
      unknown, which (A) arise under or relate to matters covered by
      Environmental Laws and (B) arose from actions occurring or conditions
      existing on or prior to the Effective Time.

        (e)  For purposes of this Section 318 and Section 416, the
following terms shall have the meanings set forth below:

             (i)  "Environmental Laws" means any and all federal, state, local
      and foreign statutes, laws, judicial decisions, regulations, ordinances,
      rules, judgments, orders, decrees, codes, injunctions, permits,
      licenses, agreements and governmental restrictions (whether now or
      hereinafter in effect), relating to human health, the environment or to
      emissions, discharges, Releases or threatened Releases of Hazardous
      Substances or wastes into the environment, including, without
      limitation, ambient air, surface water, ground water or land, or
      otherwise relating to the manufacture, processing, distribution, use,
      treatment, storage, disposal, transport or handling of Hazardous
      Substances or wastes or the investigation, clean-up, remediation or
      monitoring thereof.

            (ii) "Hazardous Substances" means any toxic, radioactive,
      caustic, corrosive, infectious, mutagenic, carcinogenic or otherwise
      hazardous waste, material or substance, including petroleum, its
      derivatives, by-products and other hydrocarbons, or any substance
      having any constituent elements displaying any of the foregoing
      characteristics, including, without limitation, any substance which
      meets the definition of "hazardous substance" contained in 42 U.S.C.
      Section 9601(14).

           (iii)  "Release" means any discharge, emission or release,
      including a Release as defined in the Comprehensive Environmental
      Response, Compensation and Liability Act of 1980, as amended ("CERCLA")
      at 42 U.S.C. Section 9601(22).  The term "Released" has a corresponding
      meaning.

         SECTION 3.19.  Takeover Statutes.  The Board of Directors of NHL has
approved the HLR Stockholder Agreement, the Merger, the Warrants, the Sharing
and Call Option Agreement and this Agreement, and such approval is sufficient
to render inapplicable to the HLR Stockholder Agreement, the Merger, the
Warrants, the Sharing and Call Option Agreement and this Agreement and the
transactions contemplated or permitted thereby and hereby, the provisions of
Section 203 of Delaware Law.  To NHL's knowledge, no other state takeover
statute or similar statute or regulation applicable to NHL applies or purports
to apply to the HLR Stockholder Agreement, the Merger, the Warrants, the
Sharing and Call Option Agreement or this Agreement, or any of the
transactions contemplated thereby and hereby.

         SECTION 3.20.  Opinion of Financial Advisor.   NHL has received the
opinion of Morgan Stanley & Co. Incorporated dated the date of this Agreement
to the effect that the aggregate consideration to be received by the
stockholders of NHL in connection with the Merger, when taken together with
the Warrants to be dividended to such stockholders, is fair, from a financial
point of view, to such stockholders.

         SECTION 3.21.  Vote Required.  The affirmative vote of the holders of
a majority of the outstanding shares of NHL Common Stock is the only vote of
the holders of any class or series of NHL securities necessary to approve the
Merger and the other transactions contemplated by this Agreement and any
amendments to the certificate of incorporation of NHL as referred to in
Section 2.1.


                                   ARTICLE 4
                 REPRESENTATIONS AND WARRANTIES OF HLR AND RBL

         HLR and RBL represent and warrant to NHL that, except as set forth on
the disclosure schedule delivered by RBL to NHL prior to the execution of this
Agreement (the "RBL Disclosure Schedule"):

         SECTION 4.1.   Corporate Existence and Power.  Each of HLR and RBL is
a corporation duly incorporated, validly existing and in good standing under
the laws of the jurisdiction in which it is incorporated and has all corporate
powers required to carry on its business as now being conducted.  Each of HLR
and RBL is duly qualified to do business as a foreign corporation and is in
good standing in each jurisdiction where the character of the property owned
or leased by it or the nature of its activities makes such qualification
necessary, except for those jurisdictions where the failure to be so qualified
would not, individually or in the aggregate, have a material adverse effect on
the business, financial condition, results of operations or prospects of RBL
and its Subsidiaries, taken as a whole (a "RBL Material Adverse Effect"), or
RBL's ability to perform its obligations hereunder or under the HLR
Stockholder Agreement.  RBL has heretofore delivered to NHL true and complete
copies of its certificate of incorporation and bylaws and the certificate of
incorporation and bylaws of each of its Subsidiaries, in each case as
currently in effect.

         SECTION 4.2.   Corporate Authorization.  The execution, delivery and
performance by each of HLR and RBL of this Agreement, the HLR Stockholder
Agreement and the Sharing and Call Option Agreement and the consummation by
HLR and RBL of the transactions contemplated hereby and thereby are within
their respective corporate powers and, except for any required approval by HLR
as RBL's sole stockholder in connection with the consummation of the Merger,
have been duly authorized by all necessary corporate action.  This Agreement
constitutes a valid and binding agreement of each of HLR and RBL, and the HLR
Stockholder Agreement when executed and delivered by HLR will constitute, a
valid and binding agreement of HLR.

         SECTION 4.3.   Governmental Authorization.  The execution, delivery
and performance by each of HLR and RBL of this Agreement and by HLR of each of
the HLR Stockholder Agreement and the Sharing and Call Option Agreement and
the consummation of the Merger by RBL and the other transactions contemplated
hereby and thereby require no action by, or filing with, any governmental
body, agency, official or authority other than (i) the filing of a certificate
of merger in accordance with Delaware Law, (ii) compliance with any applicable
requirements of the HSR Act, (iii) compliance with any applicable requirements
of the 1933 Act, (iv) compliance with any applicable requirements of the 1934
Act, (v) compliance with any applicable foreign or state securities or "blue
sky" laws, (vi) the filing of a notice pursuant to Section 721 of the Defense
Production Act of 1950 ("Exon-Florio"), and (vii) such actions by or filings
with governmental bodies, agencies, officials or authorities, the failure of
which to obtain or make would not reasonably be expected to have, individually
or in the aggregate (A) a RBL Material Adverse Effect, (B) impair the ability
of HLR or RBL to perform any of their respective obligations under this
Agreement or impair HLR's ability to perform its obligations under the HLR
Stockholder Agreement or the Sharing and Call Option Agreement or (C) prevent
the consummation of any of the transactions contemplated by this Agreement,
the HLR Stockholder Agreement or the Sharing and Call Option Agreement.

         SECTION 4.4.   Non-Contravention.  The execution, delivery and
performance by HLR and RBL of this Agreement and by HLR of the HLR Stockholder
Agreement do not, and the consummation by HLR and RBL of the transactions
contemplated hereby and thereby do not and will not (i) contravene or
conflict with the certificate of incorporation or bylaws of HLR, RBL or any
of RBL's Subsidiaries, (ii) assuming compliance with the matters referred
to in Section 4.3, contravene or conflict with or constitute a violation of
any provision of any law, regulation, judgment, injunction, order or decree
binding upon or applicable to HLR, RBL or any of RBL's Subsidiaries, (iii)
constitute a default under or give rise to a right of termination,
cancellation or acceleration of any right or obligation of HLR, RBL or any
of RBL's Subsidiaries or to a loss of any benefit to which HLR, RBL or any
of RBL's Subsidiaries is entitled under any provision of any agreement,
contract or other instrument binding upon HLR, RBL or any of RBL's
Subsidiaries or any license, franchise, permit or other similar
authorization held by HLR, RBL or any of RBL's Subsidiaries or (iv) result
in the creation or imposition of any Lien on any asset of HLR, RBL or any
of RBL's Subsidiaries, except, with respect to clauses (ii), (iii) and (iv)
above, for contraventions, conflicts, defaults, rights of termination,
cancellation or acceleration, losses of benefits and creation or imposition
of Liens that would not reasonably be expected to have, individually or in
the aggregate, a RBL Material Adverse Effect.

         SECTION 4.5.   Capitalization of RBL.  The authorized capital stock
of RBL consists of 1000 shares of common stock, no par value per share, 100
shares of which are issued and outstanding and no shares of which are held in
RBL's treasury.  All of the issued and outstanding capital stock of RBL is
validly issued, fully paid and nonassessable and is owned by HLR.  Except for
such common stock, there are outstanding (i) no shares of capital stock or
other voting securities of RBL, (ii) no securities of RBL convertible into or
exchangeable for shares of capital stock or voting securities of RBL and (iii)
no options or other rights to acquire from RBL, and no obligation of RBL to
issue, any capital stock, voting securities or securities convertible into or
exchangeable for capital stock or voting securities of RBL.  RBL has no
liability or obligation in respect of the financing of the HLR Cash
Consideration or the Roche Warrant Consideration.

         SECTION 4.6.   Subsidiaries.  (a)  Each Subsidiary of RBL is a
corporation duly incorporated, validly existing and in good standing under the
laws of its jurisdiction of incorporation, has all corporate powers required
to carry on its business as now being conducted and is duly qualified to do
business as a foreign corporation and is in good standing in each jurisdiction
where the character of the property owned or leased by it or the nature of its
activities make such qualification necessary, except for those jurisdictions
where failure to be so qualified would not, individually or in the aggregate,
have a RBL Material Adverse Effect.  RBL has delivered to NHL a list of all of
RBL's Subsidiaries.  There are no partnerships or joint venture arrangements
or other business entities in which RBL or any Subsidiary of RBL owns an
equity interest that is material to the business of RBL and its Subsidiaries,
taken as a whole.

         (b)All of the outstanding capital stock of each Subsidiary of RBL is
owned by RBL, directly or indirectly, free and clear of any Lien and free of
any other limitation or restriction (including any restriction on the right to
vote, sell or otherwise dispose of such capital stock) other than any such
limitations or restrictions imposed by statutes or regulations of general
applicability.  There are no outstanding (i) securities of RBL or any
Subsidiary of RBL convertible into or exchangeable for shares of capital stock
or other voting securities of any of RBL's Subsidiaries or (ii) options or
other rights to acquire from RBL or any Subsidiary of RBL, and no other
obligation of RBL or any Subsidiary of RBL to issue, any capital stock, voting
securities of, or any securities convertible into or exchangeable for any
capital stock or other voting securities of any of RBL's Subsidiaries (the
items in clauses (i) and (ii) being referred to collectively as the "RBL
Subsidiary Securities").  There are no outstanding obligations of RBL or any
of its Subsidiaries to repurchase, redeem or otherwise acquire any outstanding
RBL Subsidiary Securities.

         SECTION 4.7.   Financial Statements.  RBL has delivered to NHL the
audited consolidated balance sheet of RBL as of each of December 31, 1993 and
December 31, 1992 and the audited statements of income and cash flows for each
of the three fiscal years ended December 31, 1993, together with the notes
thereto and the report of Price Waterhouse thereon and its unaudited interim
financial statements for the nine months ended September 30, 1994 (the "RBL
Financial Statements").  The RBL Financial Statements have been prepared in
accordance with GAAP applied on a consistent basis during the periods involved
(except as may be indicated in the notes thereto) and fairly present the
consolidated financial position of RBL and its consolidated Subsidiaries,
excluding Roche Image Analysis Systems ("RIAS"), as of the dates thereof and
the consolidated results of their operations and cash flows for the periods
then ended.  For purposes of this Agreement, "RBL Balance Sheet" means the
consolidated balance sheet of RBL as of December 31, 1993, and the notes
thereto, contained in the RBL Financial Statements and "RBL Balance Sheet
Date" means December 31, 1993.

         SECTION 4.8.   Disclosure Documents.  (a)  None of the information
supplied or to be supplied by HLR or RBL specifically for inclusion or
incorporation by reference in (i) the Registration Statement will, at the time
the Registration Statement is filed with the SEC, at any time it is amended or
supplemented or at the time it becomes effective under the 1933 Act, contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading, or (ii) the NHL Proxy Statement will, at the date the NHL Proxy
Statement is first mailed to NHL's stockholders or at the time of the NHL
Stockholder Meeting, contain any untrue statement of a material fact or omit
to state any material fact necessary in order to make the statements therein,
in light of the circumstances under which they are made, not misleading.

         SECTION 4.9.   Absence of Certain Changes.  Since the RBL Balance
Sheet Date, RBL and its Subsidiaries have in all material respects conducted
their business in the ordinary course and, except as specifically contemplated
by this Agreement, there has not been:

         (a)any material adverse change in the business, financial condition,
assets or results of operations of RBL and its Subsidiaries, taken as a whole,
or any event, occurrence or development of or in a state of circumstances or
facts (including, without limitation, any development of or in a state of
facts or any change in the estimated or expected exposure arising or occurring
after the date hereof relating to any litigation or investigation disclosed,
or required to be disclosed, pursuant to Section 4.11 or Section 614 or in any
document referred to in Section 4.11) known to RBL or any Subsidiary of RBL
which could reasonably be expected to result in such a material adverse
change (a "RBL Material Adverse Change");

         (b)any declaration, setting aside or payment of any dividend or other
distribution with respect to any shares of capital stock of RBL, or any
repurchase, redemption or other acquisition by RBL or any of its Subsidiaries
of any outstanding shares of capital stock or other securities of, or other
ownership interests in, RBL or any of its Subsidiaries;

         (c)any amendment of any material term of any outstanding RBL
Securities or any RBL Subsidiary Securities;

         (d)any incurrence, assumption or guarantee by RBL or any of its
Subsidiaries of any indebtedness for borrowed money other than in the ordinary
course of business and in an amount not in excess of $25,000,000 and which is
on terms consistent with past practices;

         (e)any creation or assumption by RBL or any of its Subsidiaries of
any Lien on any material asset other than in the ordinary course of business
consistent with past practices;

         (f) any making of any loan, advance or capital contributions to or
investment in any Person other than loans, advances or capital contributions
to or investments in wholly-owned Subsidiaries made in the ordinary course of
business consistent with past practices;

         (g)any damage, destruction or other casualty loss (whether or not
covered by insurance) affecting the business or assets of RBL or any of its
Subsidiaries which, individually or in the aggregate, has had or would
reasonably be expected to have a RBL Material Adverse Effect;

         (h)other than mergers or consolidations of one or more of its
Subsidiaries into and with another Subsidiary or into RBL and activities in
connection with the transfer of the business and assets of RIAS, any
transaction or commitment made, or any contract or agreement entered into, by
RBL or any of its Subsidiaries relating to its assets or business (including
the acquisition or disposition of any assets) or any relinquishment by RBL or
any of its Subsidiaries of any contract or other right, in either case,
material to RBL and its Subsidiaries taken as a whole, other than transactions
and commitments in the ordinary course of business consistent with past
practice;

         (i)any change in any method of accounting or accounting practice by
RBL or any of its Subsidiaries, except for any such change required by reason
of a concurrent change in GAAP;

         (j)any (i) grant of any severance or termination pay (other than
pursuant to existing contracts, plans or arrangements), to any director,
officer or employee of RBL or any of its Subsidiaries whose total annual
compensation and bonus is in excess of $200,000, (ii) entering into of any
employment, deferred compensation or other similar agreement (or any amendment
to any such existing agreement) involving annual total compensation and bonus
in excess of $200,000 with any director, officer or employee of RBL or any of
its Subsidiaries, (iii) any amendment or change that increases compensation or
benefits payable under any existing severance or termination pay plans,
policies or employment agreements which change or amendment is applicable to a
class or classes of employees or officers covered thereby other than as
expressly required therein or (iv) increase in compensation, bonus or other
benefits payable to directors, officers or employees of RBL or any of its
Subsidiaries, whose total annual compensation and bonus is in excess of
$200,000, except as expressly required by any existing employment agreements
or pursuant to compensation plans and policies in effect December 31, 1993 or
set forth on the RBL Disclosure Schedule; or

         (k)any labor dispute, other than routine individual grievances, or
any activity or proceeding by a labor union or representative thereof to
organize any employees of RBL or any of its Subsidiaries, which employees were
not subject to a collective bargaining agreement at the RBL Balance Sheet
Date, or any lockouts, strikes, slowdowns, work stoppages or threats thereof
by or with respect to such employees.

         SECTION 4.10.  No Undisclosed Material Liabilities.   Except as set
forth in the RBL Financial Statements, neither RBL nor any of its subsidiaries
has any Liabilities required by GAAP to be set forth on a consolidated balance
sheet of RBL and its consolidated Subsidiaries or in the notes thereto and
neither RBL nor any of its Subsidiaries has, to its knowledge, incurred any
Liabilities since December 31, 1993 which, whether or not required by GAAP to
be set forth on such a consolidated balance sheet, when considered together
with any corresponding asset resulting from the event which gave rise to such
liability, individually and in the aggregate, have had or could reasonably be
expected to have an RBL Material Adverse Effect.

         SECTION 4.11.  Litigation.  Except as set forth in the RBL Financial
Statements, there is no action, suit, investigation or proceeding pending, or
to the knowledge of RBL or its Subsidiaries threatened (or, to the knowledge
of RBL or its Subsidiaries, any basis therefor), against RBL or any of its
Subsidiaries or any of their respective properties before any court or
arbitrator or any governmental body, agency or official that could reasonably
be expected to (A) have an RBL Material Adverse Effect, (B) impair the ability
of RBL or HLR to perform their respective obligations under this Agreement or
impair the ability of HLR to perform its obligations under the HLR Stockholder
Agreement or the Sharing and Call Option Agreement or (C) prevent or
materially delay the consummation of any of the transactions contemplated by
this Agreement, the HLR Stockholder Agreement or the Sharing and Call Option
Agreement.

         SECTION 4.12.  Taxes.  Except as set forth in the RBL Financial
Statements, (a)  RBL, its Subsidiaries and the HLR Group (as defined in
Section 8.1) have filed, been included in or sent, all material returns,
declarations and reports and information returns and statements required to
be filed or sent by or relating to any of them relating to any Taxes with
respect to any material income, properties or operations of RBL, any of its
Subsidiaries or the HLR Group prior to the Effective Time (collectively,
"RBL Returns"), (b) as of the time of filing, the Returns correctly
reflected in all material respects the facts regarding the income,
business, assets, operations, activities and status of RBL, its
Subsidiaries and the HLR Group and any other information required to be
shown therein, (c)  RBL, its Subsidiaries and the HLR Group have timely
paid or made provision for all material Taxes that have been shown as due
and payable on the RBL Returns that have been filed, (d)  RBL, its
Subsidiaries and the HLR Group have made or will make provision for all
material Taxes payable for any periods that end before the Effective Time
for which no RBL Returns have yet been filed and for any periods that begin
before the Effective Time and end after the Effective Time to the extent
such Taxes are attributable to the portion of any such period ending at the
Effective Time, (e) the charges, accruals and reserves for Taxes reflected
on the books of RBL, its Subsidiaries and the HLR Group are adequate to
cover the Tax liabilities accruing or payable by RBL, its Subsidiaries and
the HLR Group in respect of periods prior to the date hereof, (f) none of
RBL, any of its Subsidiaries or the HLR Group is delinquent in the payment
of any material Taxes or has requested any extension of time within which
to file or send any material RBL Return, which RBL Return has not since
been filed or sent, (g) no material deficiency for any Taxes has been
proposed, asserted or assessed in writing against RBL, any of its
Subsidiaries or the HLR Group other than those Taxes being contested in
good faith, (h) the federal income tax returns of the HLR Group have been
examined by and settled with the IRS for all years through 1989, (i) none
of RBL, any of its Subsidiaries or the HLR Group has granted any extension
of the limitation period applicable to any material Tax claims (which
period has not since lapsed) other than those Taxes being contested in good
faith, (j) none of RBL, any of its Subsidiaries or the HLR Group has any
contractual obligations under any material Tax sharing agreement with any
corporation which, as of the Effective Time, is not a member of the HLR
Group, (k) none of HLR, RBL or its Subsidiaries has taken any action or has
any knowledge of any fact or circumstance that is reasonably likely to
prevent the Merger from qualifying as a reorganization within the meaning
of Section 368(a)(1) of the Code, and (l) except as provided in Section 2.1,
HLR has no current plan or intention to cause the Surviving Corporation to
amend its certificate of incorporation.

         SECTION 4.13.  ERISA.  (a)  The RBL Disclosure Schedule lists each
"employee benefit plan", as defined in Section 3(3) of ERISA, which (i) is
subject to any provision of ERISA and (ii)(A) is maintained, administered or
contributed to by RBL or any ERISA Affiliate and covers any employee of RBL or
any Subsidiary of RBL or under which RBL or any Subsidiary has any liability
or (B) is maintained, administered or contributed to by RBL or any Subsidiary
and covers any former employee of RBL or any Subsidiary or under which RBL or
any Subsidiary has any liability.  Copies of such plans (and, if applicable,
related trust agreements, group annuity contracts and summary plan
descriptions) and all amendments thereto and written interpretations thereof
have been furnished or made available upon request to NHL together with (x)
the most recent annual report (Form 5500 including, if applicable, Schedule B
thereto) prepared in connection with any such plan and (y) the most recent
actuarial valuation report prepared in connection with any such plan.  Such
plans are referred to collectively herein as the "RBL Employee Plans".

         (b) Except as otherwise identified in the RBL Disclosure Schedule;

             (i)  no RBL Employee Plan constitutes a Multiemployer Plan, and
      no RBL Employee Plan is maintained in connection with any trust
      described in Section 501(c)(9) of the Code;

            (ii)  no RBL Employee Plans are subject to Title IV of ERISA (the
      "RBL Retirement Plans");

           (iii)  as of the RBL Balance Sheet Date, the fair market value of
      the assets of each RBL Retirement Plan (excluding for these purposes any
      accrued but unpaid contributions) exceeded the accumulated benefit
      obligation, as determined in accordance with GAAP under such RBL
      Retirement Plan;

            (iv)  no "accumulated funding deficiency", as defined in Section
      412 of the Code, has been incurred with respect to any RBL Retirement
      Plan, whether or not waived;

             (v)  no "reportable event", within the meaning of Section 4043 of
      ERISA, and no event described in Section 4041, 4042, 4062 or 4063 of
      ERISA has occurred in connection with any RBL Employee Plan, other than
      a "reportable event" that will not have a Material Adverse Effect;

            (vi)  no condition exists and no event has occurred that could
      constitute grounds for termination of any RBL Retirement Plan or, with
      respect to any RBL Employee Plan which is a Multiemployer Plan, presents
      a material risk of a complete or partial withdrawal under Title IV of
      ERISA;

           (vii)  neither RBL nor any of its ERISA Affiliates has incurred any
      material liability under Title IV of ERISA arising in connection with
      the termination of, or complete or partial withdrawal from, any plan
      covered or previously covered by Title IV of ERISA that would become a
      liability of RBL after the Effective Time;

          (viii)  if a "complete withdrawal" by RBL and all of its ERISA
      Affiliates were to occur as of the Effective Time with respect to all
      RBL Employee Plans which are Multiemployer Plans, neither RBL nor any
      ERISA Affiliate would incur any withdrawal liability under Title IV of
      ERISA that would become a liability of RBL after the Effective Time;

            (ix)  nothing done or omitted to be done and no transaction or
      holding of any asset under or in connection with any RBL Employee Plan
      has made or will make RBL or any of its Subsidiaries, any officer or
      director of RBL or any of its Subsidiaries subject to any liability
      under Title I of ERISA or liable for any Tax pursuant to Section 4975 of
      the Code that could have a RBL Material Adverse Effect; and

             (x)  neither RBL nor any of its ERISA Affiliates (A) has engaged
      in a transaction described in Section 4069 of ERISA that could subject
      RBL to material liability at any time after the date hereof or (B) has
      acted in a manner that could, or failed to act so as to, result in
      material fines, penalties, taxes or related charges under (x) Section
      502(c), (i) or (1) or ERISA, (y) Section 4071 of ERISA or (z) Chapter 43
      of the Code, which penalties, taxes or related charges, individually or
      in the aggregate, would constitute a liability in a material amount.

         (c) Each RBL Employee Plan which is intended to be qualified under
Section 401(a) of the Code has received a favorable IRS determination letter
to such effect and RBL knows of no event or circumstance occurring or existing
since the date of such letter that would adversely affect such RBL Employee
Plan's qualified status.  RBL has furnished or made available upon request to
NHL copies of the most recent IRS determination letters with respect to each
such Plan.  Each Employee Plan has been maintained in substantial compliance
with its terms and with the requirements prescribed by any and all statutes,
orders, rules and regulations, including but not limited to ERISA and the
Code, which are applicable to such Plan.  There are no investigations by any
governmental agency, termination proceedings or other claims (except claims
for benefits payable in the normal operation of the RBL Employee Plans), suits
or proceedings against or involving any RBL Employee Plan or asserting any
rights to or claims for benefits under any RBL Employee Plan that could give
rise to any material liability, and there are not any facts that could give
rise to any material liability in the event of any such investigation, claim,
suit or proceeding.

         (d) There is no contract, agreement, plan or arrangement covering any
employee or former employee of RBL or any Subsidiary that, individually or
collectively, could give rise to the payment of any amount that would not be
deductible pursuant to the terms of Section 280G of the Code.  No employee of
NHL or any of its Subsidiaries will be entitled to any additional benefits or
any acceleration of the time of payment or vesting of any RBL benefits under
any RBL Benefit Arrangements (as defined below in Section 4.13(e)) as a
result of the transactions contemplated by this Agreement.

         (e) RBL has furnished or made available upon request to NHL copies or
descriptions of each employment, severance or other similar contract,
arrangement or policy providing for annual compensation in excess of $200,000
and each plan or arrangement (written or oral) providing for insurance
coverage (including any self-insured arrangements), workers' compensation,
disability benefits, supplemental unemployment benefits, vacation benefits,
retirement benefits or for deferred compensation, profit-sharing, bonuses,
stock options, stock appreciation or other forms of incentive compensation or
post-retirement insurance, compensation or benefits which (i) is not an
Employee Plan, (ii) is entered into, maintained or contributed to, as the case
may be, by RBL or any of its Subsidiaries and (iii) covers any employee or
former employee of RBL or any of its Subsidiaries, to the extent existing on
the date hereof.  The above arrangements (whether or not existing as of the
date hereof) are referred to collectively herein as the "RBL Benefit
Arrangements".  Each RBL Benefit Arrangement has been maintained in
substantial compliance with its terms and with the requirements prescribed by
any and all statutes, orders, rules and regulations that are applicable to
such RBL Benefit Arrangement.

         (f) Except as disclosed in the RBL Disclosure Schedule, neither RBL
nor any of its Subsidiaries has any current or projected liability in respect
of post-employment or post-retirement health and medical benefits for retired
employees of RBL and its Subsidiaries, except as required to avoid excise Tax
under Section 4980B of the Code; and no condition exists that would prevent
RBL or any of its Subsidiaries from amending or terminating any RBL Employee
Plan or RBL Benefit Arrangement providing health or medical benefits in
respect of any active employee of RBL or any of its Subsidiaries other than
limitations imposed under the terms of a collective bargaining agreement.

        (g) Except as disclosed in the RBL Disclosure Schedule, there has been
no amendment to, written interpretation or announcement (whether or not
written) by RBL or any of its ERISA Affiliates relating to, or change in
employee participation or coverage under, any RBL Employee Plan or RBL Benefit
Arrangement which would increase materially the expense of maintaining such
RBL Employee Plan or RBL Benefit Arrangement above the level of the expense
incurred in respect thereof for the fiscal year ended on the RBL Balance Sheet
Date (other than those that would not result in the representation and
warranty set forth in Section 4.9(i) becoming untrue as of the Effective
Time).

         (h) Neither RBL nor any of its Subsidiaries is a party to or subject
to any collective bargaining or other labor union contracts applicable to
Persons employed by RBL or its Subsidiaries and no collective bargaining
agreement is being negotiated by RBL or any of its Subsidiaries.  As of the
date of this Agreement, to the knowledge of RBL, neither RBL nor its
Subsidiaries, nor their respective representatives or employees, has committed
any unfair labor practices in connection with the operation of the respective
businesses of RBL or its Subsidiaries, and there is no pending or threatened
in writing charge or complaint against RBL or its Subsidiaries by the NLRB or
any comparable state agency, except where such unfair labor practice, charge
or complaint would not have a RBL Material Adverse Effect.

         SECTION 4.14.  Compliance with Laws; Permits.  (a)  Except for
violations which do not have and would not reasonably be expected to have,
individually or in the aggregate, a RBL Material Adverse Effect, neither RBL
nor any of its Subsidiaries is in violation of, or has violated, any
applicable provisions of any laws, statutes, ordinances or regulations or any
term of any judgment, decree, injunction or order outstanding against it.

        (b) As of the date of this Agreement, each of RBL and its Subsidiaries
is in possession of all franchises, grants, authorizations, licenses, permits,
easements, variances, exemptions, consents, certificates, identification
numbers, approvals and orders (collectively, the "RBL Permits") necessary to
own, lease and operate its properties and to carry on its business as it is
now being conducted, and there is no action, proceeding or investigation
pending or, to the knowledge of RBL, threatened regarding suspension or
cancellation of any of the RBL Permits, except where the failure to possess,
or the suspension or cancellation of, such RBL Permits would not have
reasonably be expected to have, individually or in the aggregate, a RBL
Material Adverse Effect.

         SECTION 4.15.  Finders' Fees.  Except for CS First Boston
Corporation, whose fees will be paid by as referred to in Section 11.4
hereof and as contemplated herein, there is no investment banker, broker,
finder or other intermediary which has been retained by or is authorized to
act on behalf, of RBL or any of its Subsidiaries who might be entitled to
any fee or commission from NHL or any of its Affiliates upon consummation
of the transactions contemplated by this Agreement or any of the related
agreements.  The amount of the fees of CS First Boston Corporation have
previously been disclosed to NHL.

         SECTION 4.16.  Environmental Matters.  Except as set forth in the RBL
Financial Statements or in writing to NHL:

         (a) (i)  no notice, notification, notice of violation, demand,
request for information, investigation (whether civil or criminal), citation,
summons, complaint, order or other similar document has been received by, or,
to the knowledge of RBL or any of its Subsidiaries, is pending or threatened
by any Person against, RBL or any of its Subsidiaries, nor has any material
penalty been assessed against RBL or any of its Subsidiaries in either case
with respect to any (A) alleged violation of any Environmental Law or
liability thereunder, (B) alleged failure to have any permit, certificate,
license, approval, registration or authorization required under any
Environmental Law, (C) generation, treatment, storage, recycling,
transportation or disposal of any Hazardous Substance or (D) Release of any
Hazardous Substance;

            (ii)  no Hazardous Substance has been Released or is present at
      any property now owned, leased or operated by RBL or any of its
      Subsidiaries nor, to the knowledge of RBL, has any Hazardous Substance
      been Released at any property formerly owned, leased or operated by RBL,
      which Release or presence, individually or in the aggregate, could
      reasonably be expected to result in a RBL Material Adverse Effect;

           (iii)  there are no RBL Environmental Liabilities that have had or
      may reasonably be expected to have, individually or in the aggregate, a
      RBL Material Adverse Effect; and

            (iv)  there are no circumstances relating to the disposal of
      Hazardous Substances from any properties at the time they were owned,
      leased or operated by RBL that could give rise to liabilities under
      Environmental Laws which could reasonably be expected to result,
      individually or in the aggregate, in a RBL Material Adverse Effect.

         (b)There has been no environmental investigation, study, audit, test,
review or other analysis conducted since 1989 of which RBL has knowledge in
relation to the current or prior business of RBL or any property or facility
now or previously owned, leased or operated by RBL or any of its Subsidiaries,
the contents of which could reasonably be expected to result in a RBL Material
Adverse Effect.

         (c)Neither RBL nor any of its Subsidiaries owns or leases any real
property or industrial facility, or conducts any operations, in New Jersey or
Connecticut.

         (d)For purposes of this Section 4.16, the following terms shall have
the meanings set forth below:

             (i)  "RBL" and "Subsidiary" shall include any entity which is, in
      whole or in part, a predecessor of RBL or any of its Subsidiaries;

            (ii)  "RBL Environmental Liabilities" means any and all
      liabilities of or relating to RBL and any of its Subsidiaries, whether
      vested or unvested, contingent or fixed, actual or potential, known or
      unknown, which (A) arise under or relate to matters covered by
      Environmental Laws and (B) arose from actions occurring or conditions
      existing on or prior to the Effective Time.

         SECTION 4.17.  HLR Cash Consideration.  HLR and its Affiliates have
sufficient funds, investments and credit facilities available to pay the HLR
Cash Consideration.

         SECTION 4.18.  Takeover Statutes.  To the best of RBL's knowledge, no
state takeover statute or similar statute or regulation applicable to RBL or
HLR applies or purports to apply to the HLR Stockholder Agreement, the Merger,
the Warrants, the Sharing and Call Option Agreement or this Agreement or any
of the transactions contemplated thereby and hereby.

         SECTION 4.19.  Ownership of NHL Shares.  As of the date hereof, HLR,
RBL and their Subsidiaries beneficially own, collectively, no more than 100
NHL Shares.


                                   ARTICLE 5
                               COVENANTS OF NHL

         NHL agrees that:

         SECTION 5.1.   Conduct of NHL.  From the date hereof until the
Effective Time, NHL and its Subsidiaries shall in all material respects
conduct their business in the ordinary course and shall use all reasonable
efforts to preserve intact their business organizations and relationships with
third parties and to keep available the services of their present officers and
employees.  Without limiting the generality of the foregoing, from the date
hereof until the Effective Time:

         (a) NHL will not adopt or propose any change in its certificate of
incorporation or bylaws, except as referred to in Section 2.1;

         (b) Except as contemplated by this Agreement or as set forth on the
NHL Disclosure Schedule, NHL will not, and will not permit any of its
Subsidiaries to (i) enter into any contract, agreement, plan or arrangement
covering any director, officer or employee of NHL or any of its Subsidiaries
that provides for the making of any payments, the acceleration of vesting of
any benefit or right or any other entitlement contingent upon (A) the Merger,
the exercise by HLR of any of its rights under the HLR Stockholder Agreement
or any acquisition by HLR of securities of NHL (whether by merger, tender
offer, private or market purchases or otherwise) not prohibited by the HLR
Stockholder Agreement or (B) the termination of employment after the
occurrence of any such contingency if such payment, acceleration or
entitlement would not have been provided but for such contingency or (ii)
amend any existing contract, agreement, plan or arrangement to so provide;

         (c) Except for the Merger or as set forth on the NHL Disclosure
Schedule, NHL will not, and will not permit any Subsidiary of NHL to (i) adopt
a plan of complete or partial liquidation, dissolution, merger, consolidation,
restructuring, recapitalization or other reorganization or (ii) make any
acquisition of any business or other material assets of any Person, whether by
means of merger, consolidation or otherwise;

         (d) Except as set forth on the NHL Disclosure Schedule, NHL will not,
and will not permit any Subsidiary of NHL to, sell, lease, license or
otherwise dispose of any material assets or property except (i) pursuant to
existing contracts or commitments or (ii) in the ordinary course of business
consistent with past practice;

         (e) Except for (i) borrowings under existing credit facilities,
replacements therefor and refinancings thereof and (ii) borrowings in the
ordinary course of business consistent with past practice, NHL will not, and
will not permit any Subsidiary of NHL to, incur any indebtedness for borrowed
money or guarantee any such indebtedness except for the financing contemplated
by Section 7.2 hereof;

         (f) Except pursuant to outstanding Employee Stock Options and as
contemplated by this Agreement, NHL will not issue any NHL Securities; and

         (g) NHL will not, and will not permit any of its Subsidiaries to,
take any action that would result in (i) any of the representations and
warranties of such party set forth in this Agreement that are qualified as
to materiality becoming untrue, (ii) any of such representations and
warranties that are not so qualified becoming untrue in any material
respect or (iii) any of the conditions to the Merger set forth in Sections
9.1 or 9.2 not being satisfied.

         SECTION 5.2.   Stockholder Meeting; Proxy Material; Registration
Statement; Stock Exchange Listing.  (a)  NHL shall cause a meeting of its
stockholders (the "NHL Stockholder Meeting") to be duly called and held as
soon as reasonably practicable for the purpose of voting on the approval and
adoption of this Agreement (and the approval of any amendments to NHL's
certificate of incorporation as referred to in Section 2.1 and the
treatment of the Employee Stock Options pursuant to Section 1.5).  The Board
of Directors of NHL shall, subject to their fiduciary duties as determined
in good faith by the Board of Directors based on the advice of outside
legal counsel, recommend approval and adoption of this Agreement (and
approve any such amendments and such treatment of holders of Employee Stock
Options.  In connection with such meeting, NHL (i) will promptly prepare
and file with the SEC, will use all reasonable efforts to have cleared by
the SEC the NHL Proxy Statement, (ii) will, subject to the fiduciary duties
of its Board of Directors, use all reasonable efforts to obtain the
approval and adoption by NHL's stockholders of this Agreement (and approve
any such amendments and such treatment) and (iii) will otherwise comply
with all legal requirements applicable to such meeting.

         (b) As soon as practicable after resolving any comments of the SEC
staff with respect to the NHL Proxy Statement, NHL shall promptly prepare and
file with the SEC the Registration Statement, in which the NHL Proxy Statement
will be included as a prospectus.  NHL shall use its best efforts to have the
Registration Statement declared effective under the 1933 Act as promptly as
practicable after such filing.  NHL will use its best efforts to cause the NHL
Proxy Statement to be mailed to its stockholders as promptly as practicable
after the Registration Statement is declared effective under the 1933 Act.
NHL shall also take any action (other than qualifying to do business in any
jurisdiction in which it is not now so qualified) required to be taken under
any applicable state securities laws in connection with the issuance of NHL
Shares in the Merger.  HLR and RBL shall furnish all information concerning
the HLR and RBL as may be reasonably requested in connection with any action
contemplated by this Section 5.2.

         (c) NHL shall use all reasonable efforts to cause the Warrants to be
issued as contemplated hereby to be listed on the NYSE, subject to official
notice of issuance and evidence of satisfactory distribution.

         (d) Prior to the date on which the Warrants shall become exercisable,
in accordance with their terms, NHL shall, if required by the Warrant
Agreement and applicable law, prepare and file with the SEC a registration
statement relating to the NHL Shares issuable upon exercise of the Warrants.
NHL shall use its best efforts to cause the registration statement to be
declared effective prior to the date the Warrants become exercisable.

         SECTION 5.3.   Access to Information; Confidentiality.  (a)  From the
date hereof until the Effective Time, NHL will give HLR, RBL, their counsel,
financial advisors, auditors and other authorized representatives reasonable
access during normal business hours to the offices, properties, books and
records of NHL and its Subsidiaries, will furnish to HLR, RBL and their
counsel, financial advisors, auditors and other authorized representatives
such financial and operating data and other information as such Persons may
reasonably request and will instruct NHL's employees, counsel and financial
advisors to cooperate with HLR and RBL in their investigation of NHL and its
Subsidiaries, provided that no investigation pursuant to this Section 5.3
shall affect any representation or warranty given by NHL to HLR and RBL
hereunder and provided further that the foregoing shall not require NHL to
permit any inspection, or to disclose any information, which in the
reasonable judgment of NHL would result in the disclosure of any trade
secrets of third parties or violate any obligation of NHL with respect to
confidentiality if NHL shall have used reasonable efforts to obtain the
consent of such third party to such inspection or disclosure.  All requests
for information made pursuant to this Section 5.3 shall be directed to an
executive officer of NHL or such Person as may be designated by the Chief
Executive Officer of NHL

         (b) Prior to the Effective Time and after any termination of this
Agreement, NHL will hold, and will use its best efforts to cause its officers,
directors, employees, counsel, financial advisors, auditors and other advisors
and agents to hold, in confidence, unless compelled to disclose by judicial or
administrative process or by other requirements of law, all confidential
documents and information concerning HLR, RBL and RBL's Subsidiaries furnished
to NHL in connection with the transactions contemplated by this Agreement,
except to the extent that such information can be shown to have been (i)
previously known by NHL on a nonconfidential basis or on a basis which permits
use on a less restrictive basis than this Section 5.3(b), (ii) in the
public domain through no fault of NHL or (iii) later lawfully acquired by
NHL from sources other than RBL or HLR or their Affiliates, advisors or
representatives, provided that NHL may disclose such information to its
officers, directors, employees, accountants, counsel, consultants, advisors
and agents in connection with the transactions contemplated by this
Agreement and to its lenders in connection with obtaining the financing for
the transactions contemplated by this Agreement so long as such Persons are
informed by NHL of the confidential nature of such information and are
directed by NHL to treat such information confidentially.  NHL's obligation
to hold any such information in confidence shall be satisfied if it
exercises the same care with respect to such information as it would take
to preserve the confidentiality of its own similar information.  If this
Agreement is terminated, NHL will, and will use its best efforts to cause
its officers, directors, employees, accountants, counsel, consultants,
advisors and agents to, destroy or deliver to RBL or HLR, upon request, all
documents and other materials, and all copies thereof, obtained by NHL or
on its behalf from RBL or HLR in connection with this Agreement that are
subject to such confidence.

         SECTION 5.4.   Other Offers.  (a)  From the date hereof until the
termination of this Agreement in accordance with Section 10.1, NHL shall
not, nor shall it permit any of its Subsidiaries to, nor shall it authorize
or permit any officer, director or employee of, or any investment banker,
attorney or other advisor or representative of NHL or any of its
Subsidiaries to, directly or indirectly, (i) solicit, initiate or encourage
the submission of any "Acquisition Proposal" (as defined below) or (ii)
participate in any discussions or negotiations regarding, or furnish to any
Person any information with respect to, or take any other action to
facilitate any inquiries or the making of any proposal that constitutes, or
may reasonably be expected to lead to, any Acquisition Proposal, provided,
however, that to the extent required by the fiduciary obligations of the
Board of Directors of NHL, as determined in good faith by the Board of
Directors based on the advice of outside counsel, NHL may, (A) in response
to an unsolicited request therefor, furnish information with respect to NHL
to any Person pursuant to a customary confidentiality agreement (as
determined by NHL's outside counsel) and discuss (1) such information (but
not the terms of any possible Acquisition Proposal) and (2) the terms of
this Section 5.4 with such Person and (B) upon receipt by NHL of an
Acquisition Proposal, following delivery to HLR of the notice required
pursuant to Section 5.4(c), participate in negotiations regarding such
Acquisition Proposal.  Without limiting the foregoing, it is understood
that any violation of the restrictions set forth in the preceding sentence
by any officer, director or employee of NHL or any of its Subsidiaries or
any investment banker, attorney or other advisor or representative of NHL
or any of its Subsidiaries, whether or not such Person is purporting to act
on behalf of NHL or any of its Subsidiaries or otherwise, shall be deemed
to be a breach of this Section 5.4 by NHL.  For purposes of this Agreement,
"Acquisition Proposal" means any proposal for a merger or other business
combination involving NHL or any of its Subsidiaries or any proposal or
offer to acquire in any manner, directly or indirectly, an equity interest
in securities representing not less than 20% of the outstanding voting
securities of, or assets representing not less than 10% of the annual
revenues of NHL or any of its Subsidiaries, other than the transactions
contemplated by this Agreement or the Sharing and Call Option Agreement.

         (b) Neither the Board of Directors of NHL nor any committee thereof
shall (i) withdraw or modify, or propose to withdraw or modify, in a manner
adverse to RBL or HLR, the approval or recommendation by such Board of
Directors or any such committee of this Agreement or the Merger (or the other
transactions contemplated hereby), (ii) approve or recommend, or propose to
approve or recommend, any Acquisition Proposal or (iii) enter into any
agreement with respect to any Acquisition Proposal.  Notwithstanding the
foregoing, in the event the Board of Directors of NHL receives an Acquisition
Proposal that, in the exercise of its fiduciary obligations (as determined in
good faith by the Board of Directors after reviewing the advice of outside
counsel), it determines to be a Superior Proposal (as defined below), the
Board of Directors may (subject to the following sentences) withdraw or modify
its approval or recommendation of this Agreement or the Merger, approve or
recommend any such Superior Proposal, enter into an agreement with respect to
such Superior Proposal or terminate this Agreement, in each case at any time
after the second business day following HLR's receipt of written notice (a
"Notice of Superior Proposal") advising HLR that the Board of Directors has
received a Superior Proposal, specifying the material terms and conditions of
such Superior Proposal and identifying the Person making such Superior
Proposal.  For purposes of this Agreement, a "Superior Proposal" means any
bona fide Acquisition Proposal on terms which the Board of Directors of NHL
determines in its good faith reasonable judgment (after reviewing the advice
of a financial advisor of nationally recognized reputation) to be more
favorable to NHL's stockholders than the Merger and the transactions
contemplated hereby.

         (c) In addition to the obligations of NHL set forth in Section 5.4(b)
above, NHL shall promptly advise HLR orally and in writing of any request for
information or of any Acquisition Proposal, or any inquiry with respect to or
which could lead to any Acquisition Proposal, the material terms and
conditions of such request, Acquisition Proposal or inquiry, and the identity
of the Person making any such Acquisition Proposal or inquiry.  NHL will keep
HLR fully informed of the status and details of any such request, Acquisition
Proposal or inquiry.

         (d) NHL shall immediately cease and cause to be terminated all
existing discussions and negotiations, if any, with any parties (other than
RBL or HLR) conducted heretofore with respect to any Acquisition Proposal.

         SECTION 5.5.   Notices of Certain Events.  NHL shall promptly notify
HLR of:

         (a) any notice or other communication from any Person alleging that
the consent of such Person is or may be required in connection with the
transactions contemplated by this Agreement;

         (b) any notice or other communication from any governmental or
regulatory agency or authority in connection with the transactions
contemplated by this Agreement; and

         (c) any actions, suits, claims, investigations or proceedings
commenced or, to the best of its knowledge threatened against, relating to or
involving or otherwise affecting NHL or any of its Subsidiaries which, if
pending on the date of this Agreement, would have been required to have been
disclosed pursuant to Section  3.12 or which relate to the consummation of the
transactions contemplated by this Agreement, the HLR Stockholder Agreement, the
Warrant Agreement or the Sharing and Call Option Agreement.

         SECTION 5.6.   Tax Matters.  From the date hereof until the Effective
Time, (i) NHL and its Subsidiaries will file all material Tax returns,
statements, reports and forms (collectively, the "NHL Post-Signing Returns")
required to be filed with any taxing authority in accordance with all
applicable laws, (ii) NHL and its Subsidiaries will timely pay all Taxes shown
as due and payable on the NHL Post-Signing Returns that are so filed and as of
the time of filing, the NHL Post-Signing Returns will correctly reflect the
facts regarding the income, business, assets, operations, activities and the
status of NHL and its Subsidiaries in all material respects, (iii) NHL and its
Subsidiaries will make provision for all Taxes payable by NHL and its
Subsidiaries for which no NHL Post-Signing Return is due prior to the
Effective Time, and (iv) NHL and its Subsidiaries will promptly notify HLR of
any action, suit, proceeding, investigation, audit or claim pending against or
with respect to NHL or any of its Subsidiaries in respect of any Tax where
there is a reasonable possibility of a determination or decision which would
reasonably be expected to have a significant adverse effect on NHL's Tax
liabilities or other Tax attributes.

         SECTION 5.7.   Board Composition.  Prior to the Effective Time, the
Board of Directors of NHL shall take all action as is necessary to make
effective as of the Effective Time the resignations from the NHL Board of
Directors of any Persons then serving on the Board of Directors who are not
identified on the certificate delivered by HLR to NHL pursuant to Section 2.3
and to cause each of the persons designated to be directors in such
certificate to be duly appointed to the Surviving Corporation's Board of
Directors, in each case effective at the Effective Time.


                                   ARTICLE 6
                           COVENANTS OF HLR AND RBL

         HLR and RBL agree that:

         SECTION 6.1.   Conduct of RBL.  From the date hereof until the
Effective Time, RBL and its Subsidiaries shall in all material respects
conduct their business in the ordinary course and shall use all reasonable
efforts to preserve intact their business organizations and relationships with
third parties and to keep available the services of their present officers and
employees.  Without limiting the generality of the foregoing, from the date
hereof until the Effective Time:

         (a) RBL will not adopt or propose any change in its certificate of
incorporation or bylaws;

         (b) Except as contemplated by this Agreement or as set forth on the
RBL Disclosure Schedule, RBL will not, and will not permit any of its
Subsidiaries to, (i) enter into any contract, agreement, plan or arrangement
covering any director, officer or employee of RBL or any of its Subsidiaries
that provides for the making of any payments, the acceleration of vesting of
any benefit or right or any other entitlement contingent upon (A) the Merger
or any acquisition by HLR of securities of NHL (whether by merger, tender
offer, private or market purchases or otherwise) not prohibited by the HLR
Stockholder Agreement or (B) the termination of employment after the
occurrence of any such contingency if such payment, acceleration or
entitlement would not have been provided but for such contingency or (ii)
amend any existing contract, agreement, plan or arrangement to so provide;

         (c) Except for the Merger or as set forth on the RBL Disclosure
Schedule, RBL will not, and will not permit any Subsidiary of RBL to (i) adopt
a plan of complete or partial liquidation, dissolution, merger, consolidation,
restructuring, recapitalization or other reorganization other than into or
with RBL or any Subsidiary of RBL or (ii) make any acquisition of any business
or other material assets of any Person, whether by means of merger,
consolidation or otherwise;

         (d) Except as set forth on the RBL Disclosure Schedule, RBL will not,
and will not permit any Subsidiary of RBL to, sell, lease, license or
otherwise dispose of any material assets or property except (i) pursuant to
existing contracts or commitments, (ii) in the ordinary course of business
consistent with past practice, (iii) as NHL agrees in writing or (iv) that RBL
or a Subsidiary thereof may dispose of or transfer that certain business known
as RIAS the assets and liabilities of which have been disclosed in writing to
NHL prior to the date hereof, and the proceeds of such disposition may be paid
in a dividend or otherwise to HLR or any other Person;

         (e) Except as set forth on the RBL Disclosure Schedule or as
contemplated by Section 6.7 hereof, RBL will not, and will not permit any
Subsidiary of RBL to, declare, set aside, or apply any dividend or make any
other distribution with respect to any shares of RBL capital stock;

         (f) Except for (i) borrowings under existing credit facilities,
replacements therefor and refinancings thereof and (ii) borrowings in the
ordinary course of business consistent with past practice, RBL will not, and
will not permit any Subsidiary of RBL to, incur any indebtedness for borrowed
money or guarantee any such indebtedness;

         (g) RBL will not issue any RBL Securities other than to HLR;

         (h) RBL will not, and will cause its Affiliates not to, directly or
indirectly, acquire any NHL Shares prior to any termination fee becoming
payable to HLR pursuant to Section 11.4(b) hereof; and

         (i) RBL will not, and will not permit any of its Subsidiaries to, take
any action that would result in (i) any of the representations and warranties
of such party set forth in this Agreement that are qualified as to materiality
becoming untrue, (ii) any of such representations and warranties that are not
so qualified becoming untrue in any material respect or (iii) any of the
conditions to the Merger set forth in Sections 9.1 or 9.3 not being satisfied.

         SECTION 6.2.   Access to Information; Confidentiality.   (a)  From
the date hereof until the Effective Time, HLR and RBL will give NHL, its
counsel, financial advisors, auditors and other authorized representatives
reasonable access during normal business hours to the offices, properties,
books and records of RBL and its Subsidiaries, will furnish to NHL and its
counsel, financial advisors, auditors and other authorized representatives
such financial and operating data and other information as such Persons may
reasonably request and will instruct RBL's employees, counsel and financial
advisors to cooperate with NHL in its investigation of RBL and its
Subsidiaries, provided that no investigation pursuant to this Section 6.2
shall affect any representation or warranty given by HLR or RBL to NHL
hereunder and provided further that the foregoing shall not require RBL or
HLR to permit any inspection, or to disclose any information, which in the
reasonable judgment of RBL or HLR would result in the disclosure of any
trade secrets of third parties or violate any obligation of RBL or HLR with
respect to confidentiality if RBL or HLR, as the case may be, shall have
used reasonable efforts to obtain the consent of such third party to such
inspection or disclosure.  All requests for information made pursuant to
this Section 6.2 shall be directed to an executive officer of RBL or such
Person as may be designated by the Chief Executive Officer of RBL.

         (b) Prior to the Effective Time and after any termination of this
Agreement, each of HLR and RBL will hold, and will use its best efforts to
cause its officers, directors, employees, counsel, financial advisors,
auditors and other advisors and agents to hold, in confidence, unless
compelled to disclose by judicial or administrative process or by other
requirements of law, all confidential documents and information concerning NHL
and its Subsidiaries furnished to each of HLR and RBL in connection with the
transactions contemplated by this Agreement, except to the extent that such
information can be shown to have been (i) previously known by HLR or RBL on a
nonconfidential basis or on a basis which permits use on terms less
restrictive than this Section 6.2(b), (ii) in the public domain through no
fault of each of HLR or RBL or (iii) later lawfully acquired by HLR or RBL
from sources other than NHL or its Affiliates, advisors or representatives,
provided that each of HLR and RBL may disclose such information to its
officers, directors, employees, accountants, counsel, consultants, advisors
and agents in connection with the transactions contemplated by this
Agreement and to its lenders in connection with obtaining the financing for
the transactions contemplated by this Agreement so long as such Persons are
informed by each of HLR and RBL of the confidential nature of such
information and are directed by each of HLR and RBL to treat such
information confidentially.  Each of HLR's and RBL's obligation to hold any
such information in confidence shall be satisfied if it exercises the same
care with respect to such information as it would take to preserve the
confidentiality of its own similar information.  If this Agreement is
terminated, each of HLR and RBL will, and will use its best efforts to
cause its officers, directors, employees, accountants, counsel,
consultants, advisors and agents to, destroy or deliver to NHL, upon
request, all documents and other materials, and all copies thereof,
obtained by either of HLR and RBL or on its behalf from NHL in connection
with this Agreement that are subject to such confidence.

         SECTION 6.3.   Voting of Shares.  Each of HLR and RBL agrees to vote
any NHL Shares beneficially owned by it in favor of adoption of this Agreement
and the Merger (including any amendments to NHL's certificate of incorporation
as referred to in Section 2.1 and the treatment of any Employee Stock Options
pursuant to Section 1.5 at the NHL Stockholder Meeting.

         SECTION 6.4.   Notices of Certain Events.  RBL shall promptly notify
NHL of:

         (a) any notice or other communication from any Person alleging that
the consent of such Person is or may be required in connection with the
transactions contemplated by this Agreement;

         (b) any notice or other communication from any governmental or
regulatory agency or authority in connection with the transactions
contemplated by this Agreement; and

         (c) any actions, suits, claims, investigations or proceedings
commenced or, to the best of its knowledge threatened against, relating to or
involving or otherwise affecting RBL or any of its Subsidiaries which, if
pending on the date of this Agreement, would have been required to have been
disclosed pursuant to Section 4.11 or which relate to the consummation of the
transactions contemplated by this Agreement or the Sharing and Call Option
Agreement.

         SECTION 6.5.   Tax Matters.  From the date hereof until the Effective
Time, (i) HLR/RBL and RBL's Subsidiaries will file all material Tax returns,
statements, reports and forms (collectively, the "HLR/RBL Post-Signing
Returns") required to be filed with any taxing authority in accordance with
all applicable laws, (ii) HLR/RBL and RBL's Subsidiaries will timely pay all
Taxes shown as due and payable on the respective HLR/RBL Post-Signing Returns
that are so filed and as of the time of filing, the HLR/RBL Post-Signing
Returns will correctly reflect the facts regarding the income, business,
assets, operations, activities and the status of HLR/RBL and RBL's
Subsidiaries in all material respects, (iii) HLR/RBL and RBL's Subsidiaries
will make provision for all respective Taxes payable by HLR/RBL and RBL's
Subsidiaries for which no HLR/RBL Post-Signing Return is due prior to the
Effective Time and (iv) HLR/RBL and RBL's Subsidiaries will promptly notify
NHL of any action, suit, proceeding, investigation, audit or claim pending
against or with respect to HLR/RBL or any of RBL's Subsidiaries in respect of
any Tax where there is a reasonable possibility of a determination or decision
which would reasonably be expected to have a significant adverse effect on
HLR/RBL's Tax liabilities or other Tax attributes.

         SECTION 6.6.   NHL Employment Agreements.  HLR will not and will use
its best efforts to cause its Affiliates not to take any action to prevent NHL
from honoring  the financial terms of the existing employment agreements
between NHL and its employees to the extent that copies of such agreements
have been provided to HLR prior to the date hereof (or if not so provided, if
such agreements were entered into after the date hereof and would not result
in any of the representations and warranties of NHL hereunder becoming untrue
at the Effective Time and which are otherwise entered into in compliance with
this Agreement).

         SECTION 6.7.   Certain Actions Regarding RBL.  (a)  Prior to the
Effective Time, HLR and RBL will prepare a pro forma balance sheet for RBL and
its Subsidiaries (excluding RIAS) as of December 31, 1994 (the "Pro Forma
Balance Sheet") to eliminate any outstanding intercompany account balances
(other than current trade payables but including any intercompany balances
with respect to Taxes) as of that date and to remove and eliminate as
liabilities of RBL and any of its Subsidiaries indebtedness for borrowed money
("Borrowed Funds"), such that the aggregate liabilities of RBL and its
Subsidiaries (excluding RIAS) for Borrowed Funds as of December 31, 1994,
reduced by cash and cash equivalents as of that date, shall not exceed
$44,000,000 (the "Net Debt Amount").  HLR and RBL will cause the assets and
liabilities of RBL and its Subsidiaries at the Effective Time to be consistent
with the amounts set forth in the Pro Forma Balance Sheet (other than
intercompany account balances relating to federal income Taxes of RBL and its
Subsidiaries for the Pre-Merger Tax Period (as defined in Section 8.1) that
begins on January 1, 1995 and ends on the date on which the Effective Time
occurs, which shall be settled in the manner provided in Section 8.4(a)),
adjusted to give effect to the operations (on an arm's length basis) of RBL
and its Subsidiaries since January 1, 1995.

         (b)  From January 1, 1995 until the Effective Time, no interest will
be charged or paid on any intercompany account or on any Borrowed Funds,
except to the extent of the interest that would accrue during the period
beginning on January 1, 1995 and ending at the Effective Time on the Net Debt
Amount at the interest rate provided under the agreement with the Swiss Bank
Corporation, or if any interest is paid during such period to a third party,
HLR will repay to RBL the excess over the amount which would be payable at
such Swiss Bank Corporation interest rate.



                                   ARTICLE 7
                         COVENANTS OF HLR, RBL AND NHL

         The parties hereto agree that:

         SECTION 7.1.   Reasonable Efforts.  Upon the terms and subject to the
conditions set forth in this Agreement, each of the parties agrees to use
reasonable efforts to take, or cause to be taken, all actions, and to do, or
cause to be done, and to assist and cooperate with the other parties in doing,
all things necessary, proper or advisable to consummate and make effective, in
the most expeditious manner practicable, the Merger and the other transactions
contemplated by this Agreement, including (i) the obtaining of all necessary
actions or nonactions, waivers, consents and approvals from governmental
entities and the making of all necessary registrations and filings (including
filings with governmental entities, if any) and the taking of all reasonable
steps as may be necessary to obtain an approval or waiver from, or to avoid an
action or proceeding by, any governmental entity provided, however, that in so
doing none of HLR, RBL or their respective Affiliates shall be obligated to
accept or be subject to an HLR Adverse Condition (as defined in Section
9.2(d) and NHL shall not be obligated to accept or be subject to an NHL
Adverse Condition as defined in Section 9.3(d), (ii) the obtaining of all
necessary consents, approvals or waivers from third parties and (iii) the
execution and delivery of any additional instruments necessary to
consummate the transactions contemplated by, and to fully carry out the
purposes of, this Agreement; provided that the foregoing shall not (a)
require HLR to furnish, other than for RBL and RBL's Subsidiaries,
financial statements prepared in accordance with United States GAAP or any
reconciliation of financial statements with United States GAAP or (b)
prohibit the Board of Directors of NHL from taking any action permitted by
Section 5.4.

         SECTION 7.2.   Cash Consideration.  Each of HLR and RBL will use
their good faith best efforts from and after the date hereof to assist NHL in
NHL's effecting of the refinancing of NHL's existing indebtedness and
obtaining new financing sufficient for NHL to pay the NHL Cash Consideration
as contemplated hereby.  NHL will use its good faith best efforts from and
after the date hereof to effect the refinancing of NHL's existing indebtedness
and to obtain new financing sufficient for NHL to pay the NHL Cash
Consideration as contemplated hereby (and NHL will deposit the NHL Cash
Consideration with the Exchange Agent as contemplated by Section 1.3 hereof),
it being understood and agreed by the parties hereto that none of the parties
hereto shall have any liability to any other party hereto or any other Person
if such financing and refinancing, including sufficient financing for the NHL
Cash Consideration, is not obtained by NHL and the parties have complied with
the provisions of this Section 7.2.  HLR will deposit the HLR Cash Consideration
with the Exchange Agent as  contemplated by Section 1.3.

         Each of HLR and NHL acknowledge receipt of the Credit Suisse
commitment letter to NHL dated December 13, 1994 relating to possible
financing of the NHL Cash Consideration (the "CS Commitment Letter").

         SECTION 7.3.   Public Announcements.  NHL, HLR and RBL will use all
reasonable efforts to consult with each other before issuing any press release
or making any public statement with respect to this Agreement and the
transactions contemplated hereby or thereby and, except as may be required by
applicable law or any listing agreement with any national securities exchange,
will use all reasonable efforts not to issue any such press release or make
any such public statement prior to such consultation and agreement among the
parties with respect to the substance thereof.

         SECTION 7.4.   Further Assurances.  At and after the Effective Time,
the officers and directors of the Surviving Corporation will be authorized to
execute and deliver, in the name and on behalf of NHL or RBL, any deeds, bills
of sale, assignments or assurances and to take and do, in the name and on
behalf of NHL or RBL, any other actions and things to vest, perfect or confirm
of record or otherwise in the Surviving Corporation any and all right, title
and interest in, to and under any of the rights, properties or assets of NHL
acquired or to be acquired by the Surviving Corporation as a result of, or in
connection with, the Merger.

         SECTION 7.5.   HLR Stockholder Agreement.  HLR and NHL each agree to
execute and deliver the HLR Stockholder Agreement immediately prior to the
Effective Time.

         SECTION 7.6.   Indemnification and Insurance. (a)  The certificate of
incorporation and the bylaws of the Surviving Corporation shall contain the
provisions with respect to indemnification set forth in NHL's certificate of
incorporation and bylaws on the date of this Agreement, which provisions shall
not be amended, repealed or otherwise modified for a period of six years from
the Effective Time in any manner that would adversely affect the rights
thereunder of individuals who on or prior to the Effective Time were
directors, officers, employees or agents of NHL or RBL, unless such
modification is required by law, and the Surviving Corporation shall indemnify
and hold harmless the present and former officers and directors of NHL and RBL
in respect of acts or omissions occurring prior to the Effective Time to the
maximum extent provided thereunder; provided that such indemnification shall
(to the maximum extent permitted by law) be mandatory rather than permissive
except in instances involving wilful misconduct or bad faith and that the
Surviving Corporation shall advance expenses, including attorneys' fees
promptly on demand and delivery of any required undertaking.  For six years
after the Effective Time, the Surviving Corporation will cause to be
maintained the current policies of officers' and directors' liability
insurance in respect of acts or omissions occurring prior to the Effective
Time covering each such Person currently covered by RBL's officers' and
directors' liability insurance policy or NHL's officers' and directors'
liability insurance policy or who becomes covered thereby prior to the
Effective Time, provided that the Surviving Corporation may substitute
therefor policies of at least the same coverage containing terms and
conditions which in all material respects are no less favorable than those
of the policies in effect on the date hereof for so long as such
substitution does not result in gaps or lapses in coverage; and provided
further that in satisfying its obligation under this Section, the Surviving
Corporation shall not be obligated to pay premiums in excess of 200% of the
aggregate amount per annum which RBL and NHL paid in their last full fiscal
years, but provided further, that the Surviving Corporation shall be
obligated to provide such coverage as may be obtained for such amount.  The
Surviving Corporation shall pay all expenses (including attorneys' fees)
that may be incurred by any indemnified party in enforcing the indemnity
and other obligations provided for in this Section 7.6.  The obligations of
the Surviving Corporation under this Section 7.6 shall not be terminated or
modified in such manner as to adversely affect directors and officers to
whom this Section 7.6 applies without the consent of such director or officer.
RBL's and NHL's directors and officers, present and former, and their
heirs, executors and personal representatives to whom this Section 7.6 applies
shall be third party beneficiaries of this Section.


                                   ARTICLE 8
                                  TAX MATTERS

         SECTION 8.1.   Definitions.  The following terms, as used herein,
have the following meanings:

         "HLR Group" means, with respect to federal income Taxes, the
Affiliated group of corporations (as defined in Section 1504(a) of the Code)
of which HLR is a member and, with respect to state income or franchise Taxes,
the consolidated, combined or unitary group of which HLR or any of its
Affiliates is a member.

         "NHL Group" means, with respect to federal income Taxes, the
Affiliated group of corporations (as defined in Section 1504(a) of the Code)
of which NHL (or, after the Effective Time, the Surviving Corporation) is a
member and, with respect to state income or franchise Taxes, the consolidated,
combined or unitary group of which NHL or any of its Affiliates is a member.

         "Post-Merger Tax Period" means any Tax period that is not a
Pre-Merger Tax Period.

         "Pre-Merger Tax Period" means any Tax period ending on or before the
date on which the Effective Time occurs, and the portions ending on such date
of any Tax Period that includes (but does not end on) such day.

         "Tax Sharing Agreement" means all existing written or unwritten Tax
sharing agreements or arrangements, including agreements or arrangements based
on past practices, binding RBL or any of its Subsidiaries.

         SECTION 8.2.   Tax Covenants.  (a)  The Surviving Corporation shall
promptly pay or shall cause prompt payment to be made to HLR of all refunds of
Taxes and interest thereon received by the Surviving Corporation or any
Subsidiary of the Surviving Corporation attributable to Taxes paid by HLR, RBL
or any Subsidiary of RBL (or any predecessor of HLR or any Subsidiary of HLR)
with respect to any Pre-Merger Tax Period, provided that (i) in the case of
refunds attributable to RBL or any of its Subsidiaries relating to federal
income Taxes for Pre-Merger Tax Periods with respect to which no return has
been filed (and is not yet due) at the Effective Time, the Surviving
Corporation shall be obligated to pay or cause prompt payment to be made to
HLR of such refunds only to the extent that such refunds exceed the amount
paid by RBL or the Surviving Corporation to HLR pursuant to Section 8.4(a)
or (b), and (ii) the Surviving Corporation shall not be obligated to pay or
cause to be paid to HLR any refunds with respect to Taxes (other than
federal income Taxes) with respect to any Pre-Merger Tax Period with
respect to which no return has been filed (and is not yet due) at the
Effective Time.

         (b) All transfer, real estate gains, documentary, sales, use, stamp,
registration and other such Taxes and fees (including any penalties and
interest) incurred in connection with this Agreement shall be borne and paid
by the Surviving Corporation, and the Surviving Corporation will, at its own
expense, file all necessary Tax returns and other documentation with respect
to all such Taxes and fees, and, if required by applicable law, HLR will, and
will cause its Subsidiaries to, join in the execution of any such Tax returns
and other documentation.

         (c) In the event that it is determined that the Surviving Corporation
or any of its Subsidiaries is a member of the HLR Group on a consolidated,
combined or unitary basis for purposes of any income or franchise Tax imposed
by any state or local taxing jurisdiction, HLR and the Surviving Corporation
agree to negotiate in good faith with each other and with the other members of
such HLR Group in an attempt to enter into an agreement regarding the
allocation of liability for and/or indemnification with respect to such Tax
among the members of such HLR Group on such basis as the parties may agree is
appropriate and equitable.

        (d)(i) Neither NHL nor any of its Subsidiaries will take or permit any
action prior to the Effective Time that is reasonably likely to prevent the
Merger from qualifying as a reorganization within the meaning of Section
368(a)(1) of the Code.

            (ii)  The Surviving Corporation shall promptly indemnify HLR or
      any other member of the HLR Group for any liability for Taxes or loss
      arising as a result of the breach by NHL or any of its Subsidiaries of
      its obligations under Section 8.2(d)(i) the representation contained
      in Section 3.13(k) or the representations and covenants contained in
      the NHL Representations Letter (as defined in Section 8.2(h))  (other
      than covenant (3) therein)) that results in the Merger failing to
      qualify as a reorganization within the meaning of Section 368(a)(1)
      of the Code (or any comparable provision of state or local tax law).

         (e)(i) During the period beginning on the date hereof and ending two
years after the Effective Time, neither HLR nor any of its Subsidiaries will
take or permit any action or, after the Effective Time, cause the Surviving
Corporation or any of its Subsidiaries to take or permit any action, that is
reasonably likely to prevent the Merger from qualifying as a reorganization
within the meaning of Section 368(a)(1) of the Code.

            (ii)  HLR shall promptly indemnify the Surviving Corporation or
      any other member of the NHL Group for any liability for Taxes or loss
      arising as a result of the breach by HLR or any of its Subsidiaries of
      its obligations under Section 8.2(e)(i), the representation contained
      in Section 4.12(k) or the representations and covenants contained in
      the HLR Representations Letter (as defined in Section 8.2(i)) that
      results in the Merger failing to qualify as a reorganization within
      the meaning of Section 368(a)(1) of the Code (or any comparable
      provision of state or local tax law), or in the recognition of gain
      by RBL pursuant to Section 357(c) of the Code (or any other provision
      of state or local tax law).

         (f) HLR shall promptly indemnify the Surviving Corporation or any
other member of the NHL Group for (i) all Taxes of RBL and its Subsidiaries
for any Pre-Merger Tax Period, but, with respect to Taxes (other than federal
income taxes) for any Pre-Merger Tax Period with respect to which no return
has been filed (and is not yet due) at the Effective Time, only to the extent
in each case that such Tax exceeds the portion of the Tax shown as due on the
return which includes such Pre-Merger Tax Period that is attributable to such
Pre-Merger Tax Period; and (ii) all Taxes of any member of the HLR Group
(other than RBL and its Subsidiaries, and for any Post-Merger Tax Period, the
Surviving Corporation and its Subsidiaries) with respect to any Pre-Merger or
Post-Merger Tax Period.

         (g) None of the Surviving Corporation, any other member of the NHL
Group, HLR, or any other member of the HLR Group shall settle or pay any claim
for Taxes with respect to which the Surviving Corporation or HLR, as the case
may be, is obligated to make any payment pursuant to Sections 8.2(d)(ii),
8.2(e)(ii) or 8.2(f) without the consent of the Surviving Corporation or
HLR, as the case may be, which consent shall not be unreasonably withheld.

         (h) NHL agrees to execute and deliver a letter, dated as of the date
on which the Effective Time occurs, in the form set forth in Exhibit B hereto
(the "NHL Representations Letter") to each of counsel for NHL and counsel for
RBL and HLR prior to the Effective Time.

         (i) HLR agrees to execute and deliver a letter, dated as the date on
which the Effective Time occurs, in the form set forth in Exhibit C hereto
(the "HLR Representations Letter") to each of counsel for NHL and counsel for
RBL and HLR prior to the Effective Time.

         SECTION 8.3.   Termination of Existing Tax Sharing Agreements.  Any
and all existing Tax Sharing Agreements between RBL or any Subsidiary of RBL
and any member of the HLR Group shall be terminated as of the date on which
the Effective Time occurs.  After such date neither RBL, any Subsidiary of
RBL, HLR nor any Subsidiary of HLR shall have any further rights or
liabilities thereunder.  This Agreement shall be the sole Tax sharing
agreement relating to RBL or any Subsidiary of RBL for all Pre-Merger and
Post-Merger Tax Periods.

         SECTION 8.4.   Tax Sharing.  (a) (i) Immediately before the Effective
Time, RBL shall pay to HLR an amount equal to the federal income Taxes of RBL
and its Subsidiaries with respect to the Pre-Merger Tax Period that ends on
the date of the Effective Time.  The amount of such payment in respect of such
Taxes shall be based upon HLR's reasonable good faith estimates of the amounts
of federal taxable income of RBL and its Subsidiaries (determined as if RBL
and its Subsidiaries filed a consolidated federal income Tax return with RBL
as the common parent) for such Pre-Merger Tax Period and an effective federal
tax rate of 35%, and reduced by the amount of any payments on account of such
Taxes previously paid by RBL or any of its Subsidiaries to HLR, any other
member of the HLR Group (other than RBL and its Subsidiaries) or the IRS.

            (ii)  At such time as the HLR Group prepares its federal income
      tax return for such Pre-Merger Tax Period, it shall deliver to the
      Surviving Corporation a pro forma return (each a "Pro Forma Return") for
      RBL and its Subsidiaries which calculates the amount of federal income
      Taxes that RBL and its Subsidiaries would have paid with respect to such
      Pre-Merger Tax Period had RBL timely filed its own consolidated federal
      income Tax return including its Subsidiaries (with RBL as the common
      parent) for such Pre-Merger Tax Period.  The Surviving Corporation shall
      have the right at its expense to review all work papers and procedures
      used to prepare such Pro Forma Return.  Unless the Surviving Corporation
      timely objects as specified in this Section 8.4(a)(ii) such Pro Forma
      Return shall be binding on the parties without further adjustment.
      If the Surviving Corporation objects to any item on such Pro Forma
      Return, it shall notify HLR in writing that it so objects, specifying
      with particularity any such item and the factual or legal basis for
      its objection, within 10 days after delivery of such Pro Forma
      Return.  If HLR and the Surviving Corporation are unable to reach
      agreement on such items within 20 days after HLR receives such
      notice, the disputed items shall be resolved by a nationally
      recognized accounting firm with no material relationship to the
      Surviving Corporation, HLR or any of their Affiliates, chosen within
      5 days of the date upon which the need to retain such firm arises by
      and mutually acceptable to both HLR and the Surviving Corporation.
      The costs and expenses of retaining such firm shall be borne equally
      by HLR and the Surviving Corporation.  Upon resolution by such firm
      of all such items and adjustment of the Pro Forma Return to reflect
      such resolution, the Pro Forma Return shall be binding on the parties
      without further adjustment.  Once the Pro Forma Return has become
      binding, HLR shall promptly pay the Surviving Corporation, or the
      Surviving Corporation shall promptly pay HLR, as appropriate, an
      amount equal to (A) the difference between (x) the sum of the
      liabilities shown on the Pro Forma Return and (y) the sum of all
      payments previously made by RBL (including any payment pursuant to
      Section 8.4(a)(i)) or any Subsidiary with respect thereto to HLR, any
      other member of the HLR Group (other than RBL and its Subsidiaries)
      or the IRS, and (B) interest on such difference, which shall accrue
      at a rate equal to the three-month London Interbank Offered Rate plus
      0.5% from the Effective Time until the date payment is made pursuant
      to this sentence.

         (b) At such time as the HLR Group prepares its federal income tax
return for its 1994 tax year, it shall deliver to the Surviving Corporation a
pro forma return (each a "Pro Forma Return") for RBL and its Subsidiaries
which calculates the amount of federal income Taxes that RBL and its
Subsidiaries would have paid with respect to such tax year had RBL timely
filed its own consolidated federal income Tax return including its
Subsidiaries (with RBL as the common parent) for such tax year.  The Surviving
Corporation shall have the right at its expense to review all work papers and
procedures used to prepare such Pro Forma Return.  Unless the Surviving
Corporation timely objects as specified in this Section 8.4(b) such Pro
Forma Return shall be binding on the parties without further adjustment.
If the Surviving Corporation objects to any item on such Pro Forma Return,
it shall notify HLR in writing that it so objects, specifying with
particularity any such item and the factual or legal basis for its
objection, within 10 days after delivery of such Pro Forma Return.  If HLR
and the Surviving Corporation are unable to reach agreement on such items
within 20 days after HLR receives such notice, the disputed items shall be
resolved by a nationally recognized accounting firm with no material
relationship to the Surviving Corporation, HLR or any of their Affiliates,
chosen within 5 days of the date upon which the need to retain such firm
arises by and mutually acceptable to both HLR and the Surviving
Corporation.  The costs and expenses of retaining such firm shall be borne
equally by HLR and the Surviving Corporation.  Upon resolution by such firm
of all such items and adjustment of the Pro Forma Return to reflect such
resolution, the Pro Forma Return shall be binding on the parties without
further adjustment.  Once the Pro Forma Return has become binding, HLR
shall promptly pay the Surviving Corporation, or the Surviving Corporation
shall promptly pay HLR, as appropriate, an amount equal to (A) the
difference between (x) the sum of the liabilities shown on the Pro Forma
Return and (y) the sum of all payments previously made by RBL or any
Subsidiary with respect thereto to HLR, any other member of the HLR Group
(other than RBL and its Subsidiaries) or the IRS, provided that, where (x)
exceeds (y), the Surviving Corporation shall be obligated to pay to HLR
such difference only to the extent that it does not exceed the greatest
amount of intercompany account balances in respect of such Taxes that, if
in existence as of December 31, 1994, in addition to the other intercompany
account balances existing as of that date and actually taken into account
in formulating the Pro Forma Balance Sheet pursuant to Section 6.7(a),
could have been eliminated by payment rather than capitalization in
formulating such Pro Forma Balance Sheet, and (B) interest on the amount
required to be paid pursuant to clause (A)  (determined taking into account
the proviso thereto), which shall accrue at a rate equal to the three-month
London Interbank Offered Rate plus 0.5% from the Effective Time until the
date payment is made pursuant to this sentence.

         (c) The Surviving Corporation shall prepare or cause to be prepared,
and shall deliver to HLR, each return with respect to state or local income,
franchise, sales and use Taxes for any Pre-Merger Tax Period for which no
return has been filed (and is not yet due) as of the Effective Time and which
relates, in whole or in part, to Taxes with respect to which HLR may be
required to indemnify the Surviving Corporation or any other member of the N
Co. Group at least 90 days prior to the due date for such return.  HLR shall
have the right at its expense to review all work papers and procedures used to
prepare such return.  Unless HLR timely objects as specified in this
Section 8.4(c), the Surviving Corporation or its Subsidiary, as
appropriate, shall file such return without further adjustment with the
appropriate taxation authority, and pay the Tax shown as due thereon.  If
HLR objects to any item on such return, it shall notify the Surviving
Corporation in writing that it so objects, specifying with particularity
any such item and the factual or legal basis for its objection, within 10
days after delivery of such return.  If HLR and the Surviving Corporation
are unable to reach agreement on such items within 20 days after the
Surviving Corporation receives such notice, the disputed items shall be
resolved by a nationally recognized accounting firm with no material
relationship to the Surviving Corporation, HLR or any of their Affiliates,
chosen within 5 days of the date upon which the need to retain such firm
arises by and mutually acceptable to both HLR and the Surviving
Corporation.  The costs and expenses of retaining such firm shall be borne
equally by HLR and the Surviving Corporation.  Upon resolution by such firm
of all such items and adjustment of the return to reflect such resolution,
the Surviving Corporation or its Subsidiary, as appropriate, shall file
such return without further adjustment with the appropriate taxation
authority, and pay the Tax shown as due thereon.

         SECTION 8.5.   Cooperation on Tax Matters.  The Surviving Corporation
and HLR agree to furnish or cause to be furnished to each other, upon request,
as promptly as practicable, such information (including access to books and
records) and assistance relating to RBL and its Subsidiaries as is reasonably
necessary for the filing of any return, for the preparation for any audit, and
for the prosecution or defense of any claim, suit or proceeding relating to
any proposed adjustment, provided that (i) HLR shall not be obligated to
furnish or cause to be furnished any information with respect to Genentech,
Inc. and any of its Subsidiaries, and (ii) in the case of information which
also relates, in whole or in part, to members of the HLR Group other than RBL
and its Subsidiaries, in order to ensure the confidentiality of the HLR
Group's commercial or proprietary information to the maximum extent feasible
HLR shall be obligated to furnish or to be caused to be furnished such
information upon request only to an independent advisor with no material
relationship to the Surviving Corporation, HLR or any of their Affiliates
chosen by and mutually acceptable to both HLR and the Surviving Corporation.
The Surviving Corporation and HLR agree to retain or cause to be retained all
books and records pertinent to RBL and its Subsidiaries until the end of the
fifth year after the Effective Time, and to abide by or cause the abidance
with all record retention agreements entered into with any taxation
authority, in the case of the Surviving Corporation, but only to the extent
such agreements have been disclosed in writing to NHL prior to the date
hereof.  The Surviving Corporation agrees to give HLR reasonable notice
prior to transferring, discarding or destroying any such books and records
relating to Tax matters and, if HLR so requests, the Surviving Corporation
shall allow HLR to take possession of such books and records at HLR's cost
and expense.  The Surviving Corporation and HLR shall cooperate with each
other in the conduct of any audit or other proceedings involving RBL or any
of its Subsidiaries for any Tax purposes and each shall execute and deliver
such powers of attorney and other documents as are necessary to carry out
the intent of this subsection.


                                   ARTICLE 9
                           CONDITIONS TO THE MERGER

         SECTION 9.1.   Conditions to the Obligations of Each Party.  The
obligations of NHL, HLR and RBL to consummate the Merger are subject to the
satisfaction or waiver as of the Effective Time of the following conditions:

         (a) this Agreement, the HLR Stockholder Agreement and any amendments
to the Surviving Corporation's certificate of incorporation to be effected by
the Merger and any amendments to the Employee Stock Options contemplated by
Section 1.5 shall have been approved by the stockholders of NHL in accordance
with Delaware Law;

         (b) any applicable waiting period under the HSR Act relating to the
Merger shall have expired or been terminated;

         (c) no provision of any applicable law or regulation and no judgment,
injunction, order or decree shall prohibit the consummation of the Merger;

         (d) the Warrant Agreement shall have been executed and delivered by
NHL and the warrant agent to be named therein and such agreement shall be in
full force and effect and the Warrants shall have been approved for listing on
the NYSE subject to official notice of issuance and satisfactory distribution;

         (e) the Registration Statement shall have been declared effective and
no stop order suspending the effectiveness of the Registration Statement shall
be in effect and no proceedings for such purpose shall be pending before or
threatened by the SEC;

         (f) the HLR Stockholder Agreement shall have been executed and
delivered by HLR and NHL and shall be in full force and effect;

         (g) NHL shall have obtained sufficient financing to effect the
refinancing of NHL's existing indebtedness, if required, and to pay for the
NHL Cash Consideration on terms reasonably acceptable to HLR and NHL with
financing obtained on the terms no less favorable than those referred to in
the CS Commitment Letter being for this purpose deemed reasonably acceptable
to HLR and NHL; and

         (h) there shall not be in effect any banking moratorium or suspension
of payments in respect of banks in the United States or Switzerland, or any
general suspension in trading in, or limitation on prices for, securities on
the NYSE.

         SECTION 9.2.   Conditions to the Obligations of HLR and RBL.  The
obligations of HLR and RBL to consummate the Merger are subject to the
satisfaction of the following further conditions:

         (a)(i) NHL shall have performed in all material respects all of its
obligations hereunder required to be performed by it at or prior to the
Effective Time, (ii) the representations and warranties of NHL set forth in
Article 3 that are qualified as to materiality shall be true and correct and
the representations and warranties of NHL set forth in Article 3 that are not
so qualified shall be true and correct in all material respects, in each case
as of the Effective Time as though made on and as of the Effective Time,
except to the extent such representations and warranties speak only as of a
particular earlier date, and (iii) HLR shall have received a certificate or
certificates signed by such executive officers of NHL as reasonably requested
by HLR to the foregoing effect;

         (b) HLR shall have received all documents it may reasonably request
relating to the existence of NHL and its Subsidiaries and the authority of NHL
for this Agreement and the HLR Stockholder Agreement, all in form and
substance reasonably satisfactory to HLR;

         (c) either (i) the Committee on Foreign Investment in the United
States shall have determined not to investigate the Merger under Exon-Florio
(either by action or nonaction) or (ii) if such Committee shall have
determined to make such an investigation, such investigation shall have been
completed and the President shall have determined (either by action or
nonaction) not to take any action under Exon-Florio with respect to the
transactions contemplated by this Agreement;

         (d) there shall be no order, decree, injunction of any court or
governmental authority of competent jurisdiction that would, and there shall
not be threatened or pending by any governmental authority any litigation or
investigation that seeks to, (i) prohibit or enjoin consummation of, or
materially impair or diminish the intended benefits of, the transactions
contemplated hereby, or by the HLR Stockholder Agreement or the Warrant
Agreement, (ii) restrain the ownership or operation by HLR or any of its
Affiliates of all or any material portion of the assets or business of the
Surviving Corporation or any of its Subsidiaries or to compel HLR or any of
its Affiliates to dispose of all or any material portion of the business or
assets of the Surviving Corporation or HLR or any of its Affiliates, (iii)
impose or confirm limitations on the ability of HLR effectively to exercise
full rights and privileges of ownership of the HLR-NHL Shares, the Warrants or
other NHL Securities HLR may acquire except as limited by the HLR Stockholder
Agreement, including, without limitation, the right to exercise the Warrants
or to vote any NHL Shares on all matters properly presented to the Surviving
Corporation's stockholders, or (iv) require divestiture by HLR or any of its
Affiliates or any NHL Shares or other NHL Securities (each such circumstance
described in clauses (i) through (iv) being referred to herein as an "HLR
Adverse Condition");

         (e) all action by, or filings with, any governmental body, agency,
official or authority referred to in clauses (i) through (v) of Section 3.3
shall have been obtained and made;

         (f) the NHL Cash Consideration and the Roche Warrant Consideration
received by NHL pursuant to Section 1.4(b) shall have been deposited with the
Exchange Agent as contemplated by Section 1.3 hereof;

         (g) HLR shall have received from counsel to NHL an opinion in form
and substance reasonably satisfactory to HLR to the effect that the HLR-NHL
Shares have been duly authorized and upon delivery to HLR at the Effective
Time will be validly issued, fully paid and nonassessable and that the
Roche Warrants have been duly authorized and upon payment of the Roche
Warrant Consideration will be validly issued; and

         (h) RBL and HLR shall have received from their counsel an opinion
substantially in the form attached as Exhibit D hereto to the effect that the
Merger will constitute a reorganization pursuant to Section 368(a)(1) of the
Code.

         SECTION 9.3.   Conditions to the Obligations of NHL.  The obligations
of NHL to consummate the Merger are subject to the satisfaction of the
following further conditions:

         (a)(i) HLR and RBL shall have performed in all material respects all
of their respective obligations hereunder required to be performed by them at
or prior to the Effective Time, (ii) the representations and warranties of HLR
and RBL set forth in Article 4 that are qualified as to materiality shall be
true and correct and the representations and warranties of HLR and RBL set
forth in Article 4 that are not so qualified shall be true and correct in all
material respects, in each case as of the Effective Time as though made on and
as of the Effective Time, except to the extent such representations and
warranties speak only as of a particular earlier date, and (iii) NHL shall
have received a certificate or certificates signed by such executive officers
of Roche as reasonably requested by NHL to the foregoing effect;

         (b) NHL shall have received all documents it may reasonably request
relating to the existence of HLR or RBL and the authority of HLR or RBL for
this Agreement and the HLR Stockholder Agreement, all in form and substance
reasonably satisfactory to NHL;

         (c) HLR shall have deposited the HLR Cash Consideration with the
Exchange Agent as contemplated by Section 1.3 hereof and Roche shall have paid
the Roche Warrant Consideration to NHL;

         (d) there shall be no order, decree, injunction of any court or
governmental authority of competent jurisdiction that would, and there shall
not be threatened or pending by any governmental authority any litigation that
seeks to (i) prohibit or enjoin consummation of, or materially impair or
diminish the intended benefits to NHL's stockholders of, the transactions
contemplated hereby or by the Warrant Agreement or (ii) restrain the ownership
or operation by NHL or any of its Affiliates or the Surviving Corporation of
all or any material portion of the assets or business of either NHL or RBL or
any Subsidiary of either or to compel NHL or any of its Affiliates to dispose
of all or any material portion of the business or assets of NHL or RBL or any
Subsidiary of either (each such circumstances described in clauses (i) and
(ii) being referred to herein as an "NHL Adverse Condition");

         (e) NHL shall have received from its counsel an opinion substantially
in the form attached as Exhibit E hereto to the effect that the Merger will
constitute a reorganization pursuant to Section 368(a)(1) of the Code;

         (f) all actions by, or filings with, any governmental body, agency,
official or authority referred to in clauses (i) through (v) of Section 4.3
shall have been obtained and made; and

         (g)(i) Roche shall have performed in all material respects its
obligations Under Section 11.9 required to be performed at or prior to the
Effective Time, (ii) the representations and warranties of Roche set forth in
Section 11.9 that are qualified as to materiality shall be true and correct
and the representations and warranties of Roche set forth in Section 11.9 that
are not so qualified shall be true and correct in all material respects, in
each case as of the Effective Time as though made on and as of the
Effective Time, except to the extent such representations and warranties
speak only as of a particular earlier date, and (iii)  NHL shall have
received a certificate or certificates signed by such executive officers of
Roche as reasonably requested by NHL to the foregoing effect.


                                  ARTICLE 10
                                  TERMINATION

         SECTION 10.1.  Termination.  This Agreement may be terminated and the
Merger may be abandoned at any time prior to the Effective Time
(notwithstanding any approval of this Agreement by the stockholders of NHL):

         (a) by mutual written consent of NHL and HLR;

         (b) by either NHL or HLR, if the Merger has not been consummated by
September 1, 1995;

         (c)(i) by either NHL or HLR, if there shall be any law or regulation
that makes consummation of the Merger illegal or otherwise prohibited or any
judgment, injunction, order or decree (other than a temporary restraining
order or a preliminary injunction) enjoining consummation of  the Merger or
(ii) by NHL if any such law or regulation or any judgment, injunction, order
or decree, which, if applicable, would in NHL's reasonable judgment constitute
an NHL Adverse Condition or (iii) by HLR, if any such law or regulation or any
judgment, injunction, order or decree, which, if applicable, would in HLR's
reasonable judgment constitute an HLR Adverse Condition;


         (d) by NHL in accordance with Section 5.4;

         (e) by either HLR or NHL, if the NHL Stockholder Meeting shall have
been held and the stockholders of NHL shall have failed to approve, in
accordance with Delaware Law, this Agreement (including any amendments to the
certificate of incorporation of the Surviving Corporation to be effected
thereby, if any, as referred to in Section 2.1);

         (f) by HLR, if it is not in material breach of its obligations under
this Agreement, if the Board of Directors of NHL shall have (i) withdrawn its
recommendation of the Merger or this Agreement (or the transactions
contemplated hereby) or (ii) recommended or approved any Acquisition Proposal
(other than an Acquisition Proposal made by HLR or a controlled Affiliate of
HLR); or

         (g) by HLR or NHL if HLR, RBL or NHL shall have received any
communication from the Department of Justice or Federal Trade Commission (each
an "HSR Authority") (which communication shall be confirmed to the other
parties by the HSR Authority) that causes such party to reasonably believe
that any HSR Authority has authorized the institution under United States
antitrust laws of litigation seeking an order, decree or injunction that, if
entered, would (in the reasonable judgment of the party invoking this Section
10.1(g)), be reasonably likely to constitute an NHL Adverse Condition, if
NHL is the invoking party, or an HLR Adverse Condition, if HLR is the
invoking party.

         SECTION 10.2.  Effect of Termination.  If this Agreement is
terminated pursuant to Section 10.1, this Agreement shall become void and of no
effect with no liability on the part of any party hereto, except for liability
or damages resulting from a wilful breach of this Agreement and except that
the agreements contained in this Section 10.2 and in Sections 5.3(b),
6.2(b) and 11.4 shall survive the termination hereof.


                                  ARTICLE 11
                                 MISCELLANEOUS

         SECTION 11.1.  Notices.  All notices, requests and other
communications to any party hereunder shall be in writing (including telecopy
or similar writing) and shall be given:

         if to HLR, to:       HLR Holdings Inc.
                              1403 Foulk Road
                              Suite 102
                              P.O. Box 8985
                              Wilmington, Delaware 19899
                              Attn.: William D. Johnston

         if to RBL, to:       Roche Biomedical Laboratories, Inc.
                              358 South Main Street
                              Burlington, North Carolina 27215
                              Attn.: Bradford T. Smith, Esq.

         with a copy to:      Davis Polk & Wardwell
                              450 Lexington Avenue
                              New York, New York 10017
                              Attn: Peter R. Douglas, Esq.
                              Telecopy:  (212) 450-4800

         and

         if to NHL, to:       National Health Laboratories Holdings Inc.
                              4225 Executive Square
                              La Jolla, California  92037
                              Attn:  James G. Richmond, Esq.
                              Telecopy: (619) 658-6693

         with a copy to:      Cravath, Swaine & Moore
                              Worldwide Plaza
                              825 Eighth Avenue
                              New York, New York 10019
                              Attn: Allen Finkelson, Esq.
                              Telecopy:  (212) 474-3700

or such other address or telecopy number as such party may hereafter specify
for the purpose by notice to the other parties hereto.  Each such notice,
request or other communication shall be effective (i) if given by telecopy,
when such telecopy is transmitted to the telecopy number specified in this
Section 11.1 and the appropriate confirmation of transmittal is received or
(ii) if given by any other means, when delivered at the address specified
in this Section 11.1.

         SECTION 11.2.  Survival of Agreements and Representations and
Warranties.  Except for the representations, warranties and agreements
contained in Articles 1, 2 and 8 and Sections 3.13(k), 4.12(k), 7.4, 7.5
and 7.6, the NHL Representations Letter, the HLR Representations Letter,
and this Section 11.2 hereof, the representations and warranties and
agreements contained herein and in any certificate or other writing
delivered pursuant hereto (other than the HLR Stockholder Agreement) shall
not survive the Effective Time.

         SECTION 11.3.  Amendments; No Waivers.  (a)  Any provision of this
Agreement may be amended or waived prior to the Effective Time if, and only
if, such amendment or waiver is in writing and signed, in the case of an
amendment, by NHL, HLR and RBL or in the case of a waiver, by the party
against whom the waiver is to be effective, provided that after the adoption of
this Agreement by the stockholders of NHL, no such amendment or waiver shall,
without the further approval of such stockholders, alter or change (i) the NHL
Share Conversion, (ii) any term of the certificate of incorporation of the
Surviving Corporation or (iii) any of the terms or conditions of this
Agreement if such alteration or change would adversely affect the holders of
any shares of capital stock of NHL.

         (b) No failure or delay by any party in exercising any right, power or
privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege.  The rights and remedies
herein provided shall be cumulative and not exclusive of any rights or
remedies provided by law.

         SECTION 11.4.  Fees and Expenses.  (a)  Except as otherwise provided
in this Section 11.4, all costs and expenses incurred in connection with this
Agreement shall be paid by the party incurring such cost or expense, provided
however in the event RBL's legal and financial advisory fees and expenses
exceed in the aggregate those of NHL, HLR or an Affiliate thereof (other than
RBL or NHL or any of their respective Subsidiaries) shall pay such excess
amount.

         (b) So long as each of HLR and RBL shall not have materially breached
its obligations under this Agreement, NHL will pay HLR, in immediately
available funds, the amounts referred to below, promptly after the termination
of this Agreement (x) pursuant to clause (d) or (f)(i) of Section 10.1 if any
Person or group (as defined in Section 13(d)(iii) of the 1934 Act) (other than
HLR or an Affiliate of HLR) shall have made an Acquisition Proposal (excluding
for this purpose any indication of interest that has not resulted in an offer
or proposal) or become the beneficial owner (as defined in Rule 13d-3
promulgated under the 1934 Act) of at least 20% of the outstanding NHL Shares
or (y) pursuant to clause (f)(ii) of Section 10.1.  The amounts referred to
in the preceding sentence are (A) a termination fee of $30,000,000 and (B)
up to an additional $7,000,000 as reimbursement for expenses actually
incurred by HLR and RBL in connection with this Agreement and the
transactions contemplated hereby.  For purposes of the foregoing, the
reimbursement referred to in clause (B), above, shall be payable only if
and to the extent HLR and RBL provide written statements to NHL that they
have incurred such expenses and such back-up data as may be reasonably be
requested.

         SECTION 11.5.  Successors and Assigns.  The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns, provided that no party may
assign, delegate or otherwise transfer any of its rights or obligations under
this Agreement without the consent of the other parties hereto.  Section
11.4(b) is intended to be for the benefit of and grant to HLR the rights
specified therein, and HLR shall be entitled to enforce the covenants
contained therein.  Except as provided in the preceding sentence or in
Section 7.6, this Agreement shall be binding upon and is solely for the
benefit of each of the parties hereto and their respective successors and
assigns, and nothing in this Agreement (other than Section 7.6) is intended to
confer upon any other Person any rights or remedies of any nature
whatsoever under or by reason of this Agreement.

         SECTION 11.6.  Governing Law.  This Agreement shall be construed in
accordance with and governed by the law of the State of Delaware.

         SECTION 11.7.  Counterparts; Effectiveness.  This Agreement may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument.  This Agreement shall become effective when each party hereto
shall have received counterparts hereof signed by all of the other parties
hereto.

         SECTION 11.8.  Certain Definitions.  For purposes of this Agreement
the phrases "to the knowledge of" or "known to" mean with respect to such
Person (x) in the case of NHL, or any of its Subsidiaries, actually known to
any regional manager (which is a person in charge of an individual laboratory)
of NHL or any Subsidiary or actually known to or which could reasonably be
expected to be known by an executive of NHL more senior than a regional
manager and (y) in the case of RBL, or any of its Subsidiaries, actually known
to a subregional laboratory manager (which is a person in charge of a
sub-regional laboratory) of RBL or any Subsidiary or actually known to or
which could reasonably be expected to be known by an executive of RBL more
senior than a sub-regional manager.  Additionally, as used in this Agreement,
the following terms have the following meanings:

         (a) "Affiliate" means, with respect to any Person, any other Person
that directly or indirectly, through one or more intermediaries, controls, is
controlled by or is under common control with such first Person.

         (b) "Business Day" means any day except a Saturday, Sunday or other
day on which commercial banking institutions in New York City are authorized
by law or executive order to close.

         (c) "Person" means an individual, a corporation, a partnership, an
association, a trust or any other entity or organization, including a
governmental or political subdivision or any agency or instrumentality
thereof.

         SECTION 11.9.  Agreements of Roche.  (a)  Roche represents and
warrants to NHL that:  Roche is a corporation duly incorporated, validly
existing and in good standing under the laws of the jurisdiction in which it
is incorporated and has all corporate powers required to carry on its business
as now being conducted.  The execution, delivery and performance by Roche of
this Agreement are within Roche's corporate powers and have been duly
authorized by all necessary corporate action.  This Agreement constitutes a
valid and binding agreement of Roche.  The execution, delivery and performance
by Roche of this Agreement require no action by, or filing with, any
governmental body, agency, official or authority other than compliance with
any applicable requirements of the HSR Act.  The execution, delivery and
performance by Roche of this Agreement do not and will not (i) contravene or
conflict with the certificate of incorporation or the bylaws of Roche or
conflict with or constitute a violation of any provision of any law,
regulation, judgment, injunction, order or decree binding upon or applicable
to Roche, (ii) constitute a default under or give rise to a right of
termination, cancellation or acceleration of any right or obligation of Roche
or to a loss of any benefit to which Roche is entitled under any provision of
any agreement, contract or other instrument binding upon Roche or (iii) result
in the creation or imposition of any Lien on any asset of Roche, except in
each case for contraventions, conflicts, violations, defaults, rights of
termination, cancellation or acceleration, losses of benefits or creation or
imposition of Liens that would not be reasonably expected to have,
individually or in the aggregate, a material adverse effect on the business,
financial condition, assets, results of operations or prospects of Roche and
its Subsidiaries, taken as a whole.

         (b) Roche agrees to use its best efforts to cause RBL and HLR to
perform their obligations under this Agreement.

         (c) Roche and its Affiliates have sufficient funds, investments and
credit facilities available to it to pay the Roche Warrant Consideration and
will to the extent necessary make funds available to HLR to enable HLR to
satisfy the obligation of HLR to deposit the HLR Cash Consideration pursuant
to Section 1.3.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and
year first above written.


                                      NATIONAL HEALTH LABORATORIES
                                        HOLDINGS INC.


                                      By: /s/ James R. Maher
                                          ----------------------------
                                          Name:  James R. Maher
                                          Title: President and Chief Executive
                                                 Officer


                                      HLR HOLDINGS INC.


                                      By: /s/ Bradford T. Smith
                                          ----------------------------
                                          Name:  Bradford T. Smith
                                          Title: Assistant Secretary


                                     ROCHE BIOMEDICAL LABORATORIES, INC.


                                     By: /s/ James B. Powell
                                          ----------------------------
                                          Name:  James B. Powell
                                          Title: President


                                      HOFFMANN-LA ROCHE INC.


                                      By: /s/ Thomas P. MacMahon
                                          ----------------------------
                                          Name:  Thomas P. MacMahon
                                          Title: Senior Vice President


                                                            Exhibit 2

                                                            CONFORMED COPY



                               WARRANT AGREEMENT



                          dated as of April 10, 1995




                                    between



                  National Health Laboratories Holdings Inc.



                                      and



                        American Stock Transfer & Trust
                           Company, as Warrant Agent


                             TABLE OF CONTENTS(1)



                                   ARTICLE 1

                                  DEFINITIONS

   SECTION 1.1  Definitions................................................  4


                                   ARTICLE 2

                             ISSUE, FORM, EXERCISE

   SECTION 2.1  Amount Issued..............................................  7
   SECTION 2.2  Initial Issuance...........................................  7
   SECTION 2.3  Form of Warrant Certificate................................  7
   SECTION 2.4  Execution of Warrant Certificates..........................  7
   SECTION 2.5  Notice to Holders with Respect to Exercise and Redemption..  8
   SECTION 2.6  Exercise of Warrants.......................................  8
   SECTION 2.7  Redemption.................................................  9
   SECTION 2.8  Certain Action.............................................  9
   SECTION 2.9  No Voting Rights...........................................  9
   SECTION 2.10 Warrant Shares to be Fully Paid and Nonassessable.......... 10
   SECTION 2.11 No Fractional Warrants..................................... 10
   SECTION 2.12 No Fractional Warrant Shares............................... 10

                                   ARTICLE 3

            TRANSFER, EXCHANGE AND REPLACEMENT OF WARRANTS, LISTING

   SECTION 3.1 Ownership of Warrants....................................... 11
   SECTION 3.2 Registration and Countersignature........................... 11
   SECTION 3.3 Registration of Transfers and Exchanges..................... 11
   SECTION 3.4 Cancellation of Warrants.................................... 12
   SECTION 3.5 Payments of Taxes........................................... 12
   SECTION 3.6 Mutilated or Missing Warrant Certificates................... 12
   SECTION 3.7 Governmental Approvals and Stock Exchange Listing........... 12
   SECTION 3.8 Transfer to Comply with the Securities Laws................. 13
   SECTION 3.9 Company Option to Repurchase Warrants....................... 13

                                   ARTICLE 4

                           ANTI-DILUTION PROVISIONS
   SECTION 4.1 Adjustment of Exercise Price and Number of Shares Purchasable
                or Number of Warrants...................................... 13
   SECTION 4.2 Stock Dividends, Stock Splits, Combinations and Stock
                Reclassifications.......................................... 13
   SECTION 4.3 Rights, Options and Warrants................................ 14
   SECTION 4.4 Certain Distributions....................................... 14
   SECTION 4.5 Capital Reorganizations and Reclassifications............... 14
   SECTION 4.6 Consolidations, Mergers, Sales and Conveyances.............. 15
   SECTION 4.7 Adjustment Rules............................................ 15
   SECTION 4.8 Notice to Holders with Respect to Adjustments............... 17

                                   ARTICLE 5

                                 WARRANT AGENT

   SECTION 5.1 Appointment of Warrant Agent................................ 17
   SECTION 5.2 Warrant Agent............................................... 17
   SECTION 5.3 Change of Warrant Agent..................................... 19
   SECTION 5.4 Merger, Consolidation or Change of Name of Warrant Agent.... 19

                                   ARTICLE 6

                                 MISCELLANEOUS

   SECTION 6.1 Notices......................................................20
   SECTION 6.2 Supplements and Amendments.................................. 20
   SECTION 6.3 Termination................................................. 21
   SECTION 6.4 Governing Law............................................... 21
   SECTION 6.5 Persons Benefiting.......................................... 21
   SECTION 6.6 Counterparts................................................ 21
   SECTION 6.7 Headings.................................................... 21

   _________________
   (1)   This Table of Contents is not a part of the Agreement.


                               WARRANT AGREEMENT

               THIS WARRANT AGREEMENT (the "Agreement") is dated as of April
10, 1995 between National Health Laboratories Holdings Inc., a Delaware
corporation (the "Company"), and American Stock Transfer & Trust Company as
warrant agent (the "Warrant Agent").

               WHEREAS, as described in the succeeding two recitals, the
Company proposes to issue and deliver its warrant certificates (the "Warrant
Certificates") evidencing Common Stock Purchase Warrants (the "Warrants") to
purchase, under certain circumstances, up to an aggregate of 23,000,000 shares
(the "Warrant Shares"), subject to adjustment, of its Common Stock (as defined
below);

               WHEREAS, the Company currently intends to declare a dividend to
holders of record of Common Stock as of April 21, 1995 (the "Warrant
Distribution Record Date") of 0.16308 of a Warrant per share of Common Stock
which dividend shall be paid April 28, 1995 (the "Warrant Distribution");

               WHEREAS, the Company intends to issue and sell on the terms and
subject to the conditions set forth in the Merger Agreement (as defined below)
and herein to Hoffmann-La Roche Inc. ("Roche") 8,325,000 Warrants (the "Roche
Warrants") for an aggregate purchase price of $51,048,900;

               WHEREAS, each Warrant shall entitle the registered holder
thereof, on the terms and conditions hereof, to acquire from the Company one
share of Common Stock, subject to adjustment; and

               WHEREAS, the Warrant Agent, at the request of the Company, has
agreed to act as the agent of the Company in connection with the issuance,
registration, transfer, exchange, exercise and conversion of Warrants.

               NOW, THEREFORE, in consideration of the premises and mutual
agreements herein set forth, the parties hereto agree as follows:


                                   ARTICLE 1

                                  DEFINITIONS

               SECTION 1.1  Definitions.  As used in this Agreement, the
following terms shall have the following respective meanings:

               "Business Day" means any day except a Saturday, Sunday or other
day on which commercial banking institutions in New York City are authorized
by law or executive order to close.

               "Close of Business" means 5:00 P.M. New York City time.

               "Closing Price" means, with respect to the Warrants or shares
of Common Stock, for any day the last sale price, regular way, or, if no such
sale takes place on such day, the average of the closing bid and asked prices,
regular way, for such day, in either case as reported in the principal
consolidated transaction reporting system with respect to securities listed or
admitted to trading on the NYSE or, if the Warrants or shares of Common Stock,
as the case may be, are not listed or admitted to trading on such exchange, as
reported on the principal consolidated transaction reporting system with
respect to securities listed on the principal national securities exchange on
which the Warrants or shares of Common Stock, respectively, are listed or
admitted to trading, or if the Warrants or shares of Common Stock, as the case
may be, are not listed or admitted to trading on any national securities
exchange, as reported on NASDAQ/NMS or, if the Warrants or shares of Common
Stock, as the case may be, are not listed or admitted to trading on
NASDAQ/NMS, as reported on NASDAQ.

               "Common Stock" means the common stock, par value $0.01 per
share, of the Company.

               "Company" has the meaning set forth in the preamble to this
Warrant Agreement and its successors and assigns.

               "Exercise Price" means the purchase price per share of Common
Stock to be paid upon the exercise of each Warrant in accordance with the
terms hereof, which price shall be $22.00 per share, subject to adjustment
from time to time pursuant to Article 4 hereof.

               "Expiration Date" means April 28, 2000, or such other date as
may be determined pursuant to Section 2.7 hereof.

               "Fractional Warrant" has the meaning set forth in Section 2.11
hereof.

               "Fractional Warrant Holder" has the meaning set forth in
Section 2.11 hereof.

               "Fractional Warrant Proceeds" has the meaning set forth in
Section 2.11 hereof.

               "Fractional Warrant Share" has the meaning set forth in Section
2.12 hereof.

               "Fractional Warrant Share Holder" has the meaning set forth in
Section 2.12 hereof.

               "Fractional Warrant Share Proceeds" has the meaning set forth
in Section 2.12 hereof.

               "Holder" means, at any time, a registered holder as shown in
the Warrant Register of a Warrant outstanding at such time.

               "Market Disruption Event" means one of the following events,
circumstances or causes:  (i) the suspension of or an imposition of a material
limitation on trading in shares generally or (ii) any outbreak or escalation
of hostilities or other national or international calamity or crisis.

               "Market Price" as at any date of determination means the
average of the daily Closing Prices of a share of Common Stock over the
Valuation Period applicable to such date of determination.

               "Merger Agreement" means the Agreement and Plan of Merger dated
as of December 13, 1994, among the Company, HLR Holdings Inc., Roche
Biomedical Laboratories, Inc. and, for the purposes stated therein, Roche.

               "NASD" means the National Association of Securities Dealers,
Inc.

               "NASDAQ" means the NASD Automated Quotation System.

               "NASDAQ/NMS" means the NASDAQ--National Market System or its
successor.

               "NHL Stockholder Meeting" shall have the meaning ascribed
thereto in the Merger Agreement.

               "NYSE" means the New York Stock Exchange, Inc.

               "Person" means an individual, a partnership, a corporation, a
joint venture, a trust, an incorporated or unincorporated organization, a
government or any department or agency thereof.

               "Redemption" has the meaning set forth in Section 2.7 hereof.

               "Redemption Amount" means, in respect of any Warrant, the
amount equal to the excess (if any) of the Market Price for the Valuation
Period applicable to the Expiration Date over the Exercise Price.

               "Roche" has the meaning set forth in the recitals of this
Agreement.

               "Securities Act" means the Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

               "Trading Day" means any day on which either the Warrants or
shares of Common Stock, as the case may be, are traded on the applicable
securities exchange or in the applicable securities market.

               "Transfer Agent" has the meaning set forth in Section 2.6(c)
hereof.

               "Valuation Period" for any computation of Market Price shall
mean the 10 consecutive Trading Days (each, a "Valuation Date") commencing 15
Trading Days and ending five Trading Days before the applicable date as of
which the Market Price is being determined.

               "Warrant Agent" means the warrant agent named in the preamble
of this Agreement or the successor or successors of such Warrant Agent
appointed in accordance with the terms hereof.

               "Warrant Agent Office" means the office or agency maintained by
the Warrant Agent in New York, New York (or such other offices or agencies as
may be designated by the Warrant Agent) for the purpose of exchanging,
transferring and exercising the Warrants.

               "Warrant Certificate" has the meaning set forth in the recitals
of this Agreement.

               "Warrant Distribution" has the meaning set forth in the
recitals of this Agreement

               "Warrant Distribution Record Date" has the meaning set forth in
the recitals hereof.

               "Warrant Register" means the register maintained by the Warrant
Agent in which the issue, transfer and cancellation of the Warrants are
registered.

               "Warrants" has the meaning set forth in the recitals of this
Agreement.

               "Warrant Share" has the meaning set forth in the recitals of
this Agreement.

               All references herein to "days" shall mean calendar days unless
otherwise specified.  All terms defined in this Agreement in the singular
shall have a comparable meaning in the plural and vice versa.



                                   ARTICLE 2

                             ISSUE, FORM, EXERCISE

               SECTION 2.1 Amount Issued.  Subject to the other provisions of
this Agreement (including Article 4), Warrants to purchase no more than
23,000,000 Warrant Shares may be issued and delivered hereunder.

               SECTION 2.2 Initial Issuance.  Warrant Certificates
representing the Warrants shall be initially issued by the Warrant Agent at
the time, in the denominations and to the Persons so directed by the Company.
Upon the declaration of the Warrant Distribution, the Company shall execute
and deliver to the Warrant Agent for countersignature Warrant Certificates
representing a number of Warrants equal to the product of (x) the number of
outstanding shares of Common Stock on the Warrant Distribution Record Date and
(y) 0.16308.  At or prior to the Effective Time (as defined in the Merger
Agreement) the Company shall execute and deliver to the Warrant Agent for
countersignature Warrant Certificates representing the Roche Warrants.

               SECTION 2.3 Form of Warrant Certificate.  The Warrant shall be
in registered form only.  The Warrant Certificates and the forms of election
to exercise Warrants and of assignment to be printed on the reverse side
thereof shall be in substantially the form set forth in Exhibit A hereto
together with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Agreement, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with any law or with
any rules made pursuant thereto or with any rules of any securities exchange
or as may, consistently herewith, be determined by the officers executing such
Warrants, as evidenced by their execution of the Warrants.

               SECTION 2.4 Execution of Warrant Certificates.  (a) Warrant
Certificates shall be signed on behalf of the Company by the Chairman of its
Board of Directors, its Chief Executive Officer, its President, a Vice
President or its Treasurer and attested by its Secretary or Assistant
Secretary, under its corporate seal.  Each such signature upon the Warrant
Certificates may be in the form of a facsimile signature of the current or any
future Chairman of the Board, Chief Executive Officer, President, Vice
President, Treasurer, Secretary or Assistant Secretary and may be imprinted or
otherwise reproduced on the Warrant Certificates and for that purpose the
Company may adopt and use the facsimile signature of any person who shall have
been Chairman of the Board, Chief Executive Officer, President, Vice
President, Treasurer, Secretary or Assistant Secretary, notwithstanding the
fact that at the time the Warrant Certificates shall be countersigned and
delivered or disposed of such person shall have ceased to hold such office.
The seal of the Company may be in the form of a facsimile thereof and may be
impressed, affixed, imprinted or otherwise reproduced on the Warrant
Certificates.

               (b)  If any officer of the Company who shall have signed any of
the Warrant Certificates shall cease to be such officer before the Warrant
Certificates so signed shall have been countersigned by the Warrant Agent or
disposed of by the Company, such Warrant Certificates nevertheless may be
countersigned and delivered or disposed of as though such person had not
ceased to be such officer of the Company; and any Warrant Certificate may be
signed on behalf of the Company by any person who, at the actual date of the
execution of such Warrant Certificate, shall be a proper officer of the
Company to sign such Warrant Certificate, although at the date of the
execution of this Agreement any such person was not such officer.

               SECTION 2.5 Notice to Holders with Respect to Exercise and
Redemption.  Not earlier than 90 days nor later than 60 days prior to the
Expiration Date, the Company shall deliver to the Warrant Agent notice in
writing, which notice shall be irrevocable, stating whether or not it shall
have elected to redeem the Warrants on the Expiration Date in accordance with
Section 2.7  Promptly after receipt of the Company's notice, the Warrant Agent
shall mail a notice to all Holders at the addresses set forth on the Warrant
Register to the effect that (as applicable) each outstanding Warrant shall be
redeemed for the Redemption Amount on the Expiration Date or that such
Warrants shall not be redeemed and describing the exercise procedure set forth
in Section 2.6 (which notice shall include the statement that the Warrants
will terminate and become void as of the Close of Business on the Expiration
Date and that failure by a Holder to comply with the exercise procedures will
result in the forfeiture of such Holder's rights with respect to such Holder's
Warrants).

               SECTION 2.6 Exercise of Warrants.  (a) Subject to the
provisions of this Agreement, each Warrant shall be exercisable only prior to
the Close of Business on the Expiration Date and only if the Company shall not
have duly elected to effect a Redemption pursuant to Section 2.7.  The Warrants
shall expire at and become null and void and have no value and no Person shall
have any rights thereto as of the Close of Business on the Expiration Date,
provided, however, that, notwithstanding such expiration, Holders that have
properly exercised Warrants in accordance with this Section 2.6 shall be
entitled to receive Warrant Shares with respect to such Holders' Warrants as
provided in subsection (b) unless the Company shall have elected to effect a
Redemption pursuant to Section 2.7, in which case each Holder shall be
entitled to received the Redemption Amount as described in Section 2.7.

               (b) Subject to Section 2.7, for each Warrant held, the Holder
thereof shall have the right to purchase from the Company (and the Company
shall issue and sell to such Holder) one fully paid and non-assessable share
of Common Stock at the Exercise Price (in each case subject to adjustment as
hereinafter provided) upon (i) surrender to the Warrant Agent, at a Warrant
Agent Office of the Warrant Certificate evidencing such Warrant, with the form
of election to exercise on the reverse thereof properly completed and signed
by the Holder or Holders thereof or by the duly appointed legal representative
thereof or by a duly authorized attorney, and (ii) payment of the Exercise
Price for the number of Warrant Shares in respect of which such Warrant is
being exercised.  Such surrender and payment (if applicable) may be made and
shall be accepted by the Warrant Agent at any time during the 45 day period
immediately preceding the Close of Business on the Expiration Date, but any
Warrants so surrendered shall not be deemed to be exercised until the
Expiration Date.  Payment of the Exercise Price shall be made by a certified
or official bank check payable to the order of the Warrant Agent for the
account of the Company or by wire transfer of funds to an account designated
by the Company for such purpose.  The Warrants evidenced by a Warrant
Certificate shall be exercisable, at the election of the Holder thereof,
either in their entirety or in part.  Except as expressly provided to the
contrary in Article 4, no adjustments shall be made for any cash dividends or
other cash distributions on Warrant Shares issuable upon the exercise of a
Warrant.

               (c)  Upon the surrender of each Warrant Certificate in
accordance with subsection (b) above and payment of the per share Exercise
Price (and an amount representing any transfer taxes payable with respect to
the issuance of the relevant Warrant Shares) immediately following the
Expiration Date, the Company shall issue and cause its transfer agent for the
Common Stock ("Transfer Agent") to deliver with all reasonable dispatch to or
upon the written order of the Holder and in such name or names as such Holder
may designate, a certificate or certificates for the number of full Warrant
Shares so purchased upon the exercise of such Warrant or Warrants together
with cash as provided in Section 2.12 in respect of any Fractional Warrant
Share (as defined below) otherwise issuable upon such exercise.  Such
certificate or certificates shall be deemed to have been issued and any person
so designated to be named therein shall be deemed to have become a holder of
record of such Warrant Shares as of the Expiration Date; provided, however,
that if, at such date, the transfer books for the Warrant Shares shall be
closed, the certificates for the Warrant Shares in respect of which such
Warrants are then exercised shall be issuable as of the date on which such
books shall next be opened and until such date Holders shall be under no duty
to deliver any certificates for such Warrant Shares; provided further,
however, that such transfer books, unless otherwise required by law, shall not
be closed at any one time for a period longer than 20 calendar days.

               SECTION 2.7 Redemption.  (a) Notwithstanding Section 2.6, the
Company shall have the right to redeem all, but not less than all, of the
Warrants on the Expiration Date by payment to each Holder as of the Expiration
Date in cash of the Redemption Amount with respect to the Warrants held by
such Holder as of the Expiration Date (a "Redemption"), but only if the
Company shall have timely delivered to the Warrant Agent the notice of its
election to redeem the Warrants referred to in Section 2.5.  If the Company
has elected to redeem the Warrants as herein provided, at or immediately prior
to the Expiration Date, the Company shall cause to be transferred to the
Warrant Agent an amount in immediately available funds equal to the aggregate
Redemption Amount for all outstanding Warrants for payment by the Warrant
Agent to the Holders as of the Expiration Date in respect of the Warrants held
as of the Expiration Date.  If the Company shall have duly elected to redeem
the Warrants but the aggregate Redemption Amount is zero or less than zero, no
amount shall be required to be paid by the Company in respect of the
redemption of the Warrants but the Warrants shall nonetheless be deemed to
have been redeemed.

               (b)  If the Company has duly elected to redeem the Warrants
and the Company determines in its sole discretion that a Market Disruption
Event has occurred and is continuing on any day that but for the occurrence
of a Market Disruption Event would have been a Valuation Date with respect
to the determination of the Redemption Amount, then such day shall not be
deemed to be a Valuation Date and the Valuation Date shall instead be
deemed to be the next Trading Day on which the Company determines that no
Market Disruption Event is continuing and the Valuation Period shall be
extended accordingly.  If the Valuation Period shall have been so extended,
then the Expiration Date for purposes of the Redemption shall be deemed to
be the fifth Trading Day after the end of the Valuation Period as so
extended.  In the event that the Company determines that a Market
Disruption Event has occurred, the Company shall give telephonic notice
(promptly confirmed in writing) of such event to the Warrant Agent.

               SECTION 2.8 Certain Action.  Before taking any action that
would cause an adjustment pursuant to Article 4 reducing the Exercise Price
below the then par value (if any) of the Warrant Shares issuable upon exercise
of the Warrants, the Company will take any corporate action that may, in the
opinion of its counsel, be necessary in order that the Company may validly and
legally issue fully paid and nonassessable Warrant Shares at the Exercise
Price as so adjusted.

               SECTION 2.9 No Voting Rights.  Prior to the exercise of the
Warrants and the issuance of Warrant Shares in respect thereof, no Holder, as
such, shall be entitled to any rights of a stockholder of the Company
including, without limitation, the right to receive dividends or subscription
rights, the right to vote, to consent, to exercise any preemptive right, to
receive any notice of meetings of stockholders for the election of directors
of the Company or any other matter or to receive any notice of any proceedings
of the Company, except as may be specifically provided for herein.

               SECTION 2.10 Warrant Shares to be Fully Paid and Nonassessable.
The Company covenants that all Warrant Shares issued upon exercise of the
Warrants will, upon payment of the applicable Exercise Price, delivery of
properly completed forms of election to exercise and issuance of such Warrant
Shares in accordance with the terms of this Agreement, be fully paid and
nonassessable and free from all liens, charges and security interests created
by or imposed upon the Company with respect to the issuance and holding
thereof.  The Company shall no less than 50 days prior to the Expiration Date
(unless the Company shall have elected to effect a Redemption pursuant to
Section 2.7) at all times thereafter until issuance of Warrant Shares in
accordance herewith keep reserved out of its authorized shares of Common Stock
a number of shares of Common Stock sufficient to provide for the exercise of
all outstanding Warrants.

               SECTION 2.11 No Fractional Warrants.  (a) No certificates or
scrip representing fractional Warrants shall be issued to any Holder in the
Warrant Distribution.  As promptly as practicable following the Warrant
Distribution Record Date, the Warrant Agent shall determine with respect to
each Person entitled to receive Warrants pursuant to the Warrant Distribution
the excess of (x) the number of Warrants delivered to the Warrant Agent by the
Company pursuant to Section 2.2 with respect to each such Person over (y) the
number of whole Warrants to be distributed with respect to such Person (such
excess fraction of a Warrant being hereinafter referred to in connection with
each such Person as a "Fractional Warrant").  As soon after the Warrant
Distribution Record Date as practicable, the Warrant Agent, as agent for
Holders otherwise entitled to receive Fractional Warrants (each, a "Fractional
Warrant Holder"), shall aggregate and sell in normal transactions the
Fractional Warrants for all Fractional Warrant Holders at then available
prices on the NYSE.  Until the net proceeds of such sale or sales (the
"Fractional Warrant Proceeds") have been distributed to the Fractional Warrant
Holders, the Warrant Agent shall hold the Fractional Warrant Proceeds in trust
for the Fractional Warrant Holders.  The Company shall pay, and deduct from
the Fractional Warrant Proceeds, all commissions, transfer taxes and other
out-of-pocket transaction costs, including the expenses and compensation of
the Warrant Agent, incurred in connection with such sale of the Fractional
Warrants.  The Warrant Agent shall determine the portion of the net Fractional
Warrant Proceeds to which each Fractional Warrant Holder shall be entitled, if
any, by multiplying the net Fractional Warrant Proceeds amount by a fraction,
the numerator of which is the Fractional Warrant to which such Fractional
Warrant Holder would otherwise be entitled and the denominator of which is the
aggregate Fractional Warrants to which all Fractional Warrant Holders would
otherwise be entitled.  As soon as practicable after the determination of the
amount of Fractional Warrant  Proceeds, if any, to be paid in cash to each
Fractional Warrant Holder in lieu of any Fractional Warrants, the Warrant
Agent shall make available such amounts, without interest, to each such
Fractional Warrant Holder.

               (b)  If Warrants are to be issued Holders pursuant to Section
4.7(h), the Company and the Warrant Agent shall, prior to such issuance,
establish a procedure corresponding to the procedure described in subsection
(a) above such that Holders that would otherwise receive Fractional Warrants
shall instead receive the appropriate amount of the Fractional Warrant
Proceeds thereof.

               SECTION 2.12 No Fractional Warrant Shares.  Notwithstanding any
adjustment pursuant to Article 4 in the number of Warrant Shares purchasable
upon the exercise of a Warrant, no certificates or scrip representing
fractional Warrant Shares shall be issued upon exercise of a Warrant.  As
promptly as practicable following the Expiration Date, if the Company shall
not have elected to effect a Redemption pursuant to Section 2.7, the Transfer
Agent shall determine the excess of (x) the number of Warrant Shares delivered
to the Transfer Agent by the Company with respect to each Holder pursuant to
Section 2.6 over (y) the aggregate number of whole Warrant Shares to be issued
with respect to such Holder (such excess being hereinafter referred to in
connection with each such Holder as the "Fractional Warrant Share").  As soon
after the Expiration Date as practicable, the Transfer Agent, as agent for
Holders otherwise entitled to receive Fractional Warrant Shares (each, a
"Fractional Warrant Share Holder"), unless the Company has elected to effect a
Redemption pursuant to Section 2.7, shall aggregate and sell in normal
transactions the Fractional Warrant Shares for all the Fractional Warrant
Share Holders at then available prices on the NYSE or on the principal United
States securities exchange on which the Common Stock is listed, if any, or on
NASDAQ, if the Common Stock is quoted on NASDAQ.  Until the net proceeds of
such sale or sales (the "Fractional Warrant Share Proceeds") have been
distributed to such Holders, the Transfer Agent will hold the Fractional
Warrant Share Proceeds in trust for the Fractional Warrant Share Holders.  The
Company shall pay, and deduct from the Fractional Warrant Share Proceeds, all
commissions, transfer taxes and other out-of-pocket transaction costs,
including the expenses and compensation of the Transfer Agent, incurred in
connection with such sale of the Fractional Warrant Shares.  The Transfer
Agent shall determine the portion of the net Fractional Warrant Share Proceeds
to which each Fractional Warrant Share Holder shall be entitled, if any, by
multiplying the net Fractional Warrant Share Proceeds amount by a fraction,
the numerator of which is the Fractional Warrant Share to which such
Fractional Warrant Share Holder would otherwise be entitled and the
denominator of which is the aggregate amount of Fractional Warrant Shares to
which all such Fractional Warrant Share Holders would otherwise be entitled.
As soon as practicable after the determination of the amount of the net
Fractional Warrant Share Proceeds, if any, to be paid in cash to each such
Fractional Warrant Share Holder in lieu of its Fractional Warrant Share, the
Transfer Agent shall make available such amounts, without interest, to each
such Fractional Warrant Share Holder.


                                   ARTICLE 3

            TRANSFER, EXCHANGE AND REPLACEMENT OF WARRANTS, LISTING

               SECTION 3.1 Ownership of Warrants.  The Company and the Warrant
Agent may deem and treat any Holder as the absolute owner for all purposes,
notwithstanding any notation of ownership or other writing on the relevant
Warrant Certificate made by anyone, and shall not be affected by any notice to
the contrary until due presentation of such Warrant Certificate for
registration and transfer as provided in this Article 3.

               SECTION 3.2 Registration and Countersignature.  Warrant
Certificates shall be countersigned manually or by facsimile and dated the
date of countersignature by the Warrant Agent and shall not be valid for
any purpose unless so countersigned.  The Warrant Certificates shall be
numbered and shall be registered in the Warrant Register.  The
countersignature of the Warrant Agent shall be that of a duly authorized
employee of the Warrant Agent.

               SECTION 3.3 Registration of Transfers and Exchanges.  (a) The
Warrant Agent shall from time to time register the transfer of any outstanding
Warrant Certificate in the Warrant Register, upon surrender of such Warrant
Certificate, duly endorsed, and accompanied by a written instrument or
instruments of transfer in a form satisfactory to the Warrant Agent, duly
signed by the Holder or Holders thereof or by the duly appointed legal
representative thereof or by a duly authorized attorney, such signature to be
guaranteed by (i) a bank or trust company,  (ii) a broker or dealer that is a
member of the NASD or  (iii) a member of a national securities exchange, and
funds sufficient to pay and transfer taxes payable with respect to such
transfer.  Upon any such registration or transfer, a new Warrant Certificate
shall be issued to the transferee.

               (b)  Warrant Certificates may be exchanged at the option of the
holder or holders thereof, when surrendered to the Warrant Agent at a Warrant
Agent Office, or at the offices of any successor Warrant Agent as provided in
Section 5.3 hereof, for another Warrant Certificate or other Warrant
Certificates of like tenor and representing in the aggregate a like number of
Warrants.

               (c)  Notwithstanding paragraphs (a) and (b) above, the Warrant
Agent shall not be required to transfer or exchange any Warrant Certificate
from and after the 105th day preceding the scheduled Expiration Date provided
that if, in the notice provided by the Company pursuant to Section 2.5, the
Company shall not have elected to redeem the Warrants, then the Warrant Agent
shall permit transfers or exchanges of Warrant Certificates from and after the
mailing of the notice to Holders referred to in Section 2.5 but shall not be
required to transfer or exchange any Warrant Certificate from and after the
15th day preceding the Expiration Date.

               SECTION 3.4 Cancellation of Warrants.  If the Company shall
purchase or otherwise acquire Warrants, the Company may deliver the Warrant
Certificates representing such Warrants to the Warrant Agent to be canceled by
it and retired.  The Warrant Agent shall cancel all Warrant Certificates so
surrendered.

               SECTION 3.5 Payments of Taxes.  The Company will pay any
documentary stamp taxes attributable to the initial issuance of Warrants and
of Warrant Shares upon the exercise of Warrants; provided, that the Company
shall not be required to pay any tax or taxes which may be payable in respect
of any transfer involved in the issue of any Warrant Certificates or any
certificates for Warrant Shares in a name other than the registered holder of
Warrant Certificate surrendered upon the exercise of a Warrant, and the
Company shall not be required to issue or deliver such certificates unless or
until the person or persons requesting the issuance thereof shall have paid to
the Company the amount of such tax or shall have established to the
satisfaction of the Company that such tax has been paid.

               SECTION 3.6 Mutilated or Missing Warrant Certificates.  (a) If
(i) any mutilated Warrant Certificate is surrendered to the Warrant Agent or
(ii) the Company and the Warrant Agent receive evidence to their satisfaction
of the destruction, loss or theft of any Warrant Certificate, and there is
delivered to the Company and the Warrant Agent such security or indemnity as
may be reasonably required by them to hold each of them harmless with respect
thereto, then, in the absence of notice to the Company or the Warrant Agent
that such Warrant Certificate has been acquired by a bona fide purchaser, the
Company shall execute and upon its written request the Warrant Agent shall
countersign and deliver, in exchange for any such mutilated Warrant
Certificate or in lieu of any such destroyed, lost or stolen Warrant
Certificate, a new Warrant Certificate of like tenor and for a like aggregate
number of Warrants.

               (b)  Upon the issuance of any new Warrant Certificate under
this Section 3.6 the Company may require the payment of a sum sufficient to
cover any tax or other governmental charge that may be imposed in relation
thereto and other expenses (including the reasonable fees and expenses of the
Warrant Agent and of counsel to the Company) in connection therewith.

               (c)  Every new Warrant Certificate executed and delivered
pursuant to this Section 3.6 in lieu of any destroyed, lost or stolen Warrant
Certificate shall constitute an original contractual obligation of the
Company, whether or not the destroyed, lost or stolen Warrant Certificate
shall be at any time enforceable by anyone, and shall be entitled to the
benefits of this Warrant Agreement equally and proportionately with any and
all other Warrant Certificates duly executed and delivered hereunder.

               SECTION 3.7 Governmental Approvals and Stock Exchange Listing.
The Company from time to time will use its best efforts (a) to obtain and keep
effective any and all permits, consents and approvals of governmental agencies
and authorities and to file such documents under federal and state securities
acts and laws, which may be or become requisite in connection with the
issuance, sale, transfer and delivery of the Warrant Certificates, the
exercise of the Warrants and the issuance, sale, transfer and delivery of the
Warrant Shares issued upon exercise of Warrants (including, without
limitation, causing a registration statement under the Securities Act in
respect of the Warrant Shares to be filed and declared effect but, subject to
the Company's other contractual obligations, not including maintaining an
effective registration statement for purposes of resale of Warrant Shares),
provided, however, if any such permits, consents, approvals or documents are
not so obtained or effective, the Company will immediately notify the Warrant
Agent;  (b) to have the Warrants listed on the NYSE or on the principal United
States securities exchange on which the Common Stock is listed, if any, or
quoted on NASDAQ if the Common Stock is so quoted; and (c) immediately upon
the issuance of Warrant Shares upon exercise of Warrants, to have such Warrant
Shares listed on the NYSE or on the principal United States securities
exchange or exchanges on which the Common Stock is listed, if any, or quoted
on NASDAQ if the Common Stock is so quoted.  The Company shall cause the
Warrants to be delisted on the NYSE or cease to be quoted, as the case may be,
effective as of the Close of Business on the Expiration Date.  Notwithstanding
anything in this Agreement to the contrary, in no event shall a Holder be
entitled to exercise a Warrant unless a registration statement filed under the
Securities Act in respect of the Warrant Shares is then effective (unless in
the opinion of counsel to the Company an exemption from the registration
requirements is available under the Securities Act at the time of such
exercise).

               SECTION 3.8 Transfer to Comply with the Securities Laws.
Neither the Warrants nor any of the Warrant Shares, nor any interest in
either, may be sold, assigned, pledged, hypothecated, encumbered or in any
other manner transferred or disposed of, in whole or in part, except in
compliance with applicable United States federal and state securities laws and
the terms and conditions hereof and thereof.

               SECTION 3.9 Company Option to Repurchase Warrants.  The Company
and its subsidiaries shall have the option, in their sole discretion, at any
time or from time to time, to purchase Warrants (i) in the public market, (ii)
by tender or exchange offer available to all Holders at any price or (iii) in
private transactions at a price not more than ten percent (10%) over the
Market Price of the Warrants as of closing date of each such transaction
respectively.  Warrants acquired by the Company or its subsidiaries shall be
canceled and shall not be available for reissuance or resale.


                                   ARTICLE 4

                           ANTI-DILUTION PROVISIONS

               SECTION 4.1 Adjustment of Exercise Price and Number of Shares
Purchasable or Number of Warrants.  The Exercise Price, the number of Warrant
Shares purchasable upon the exercise of each Warrant and the number of
Warrants outstanding are subject to adjustment from time to time upon the
occurrence of the events enumerated in this Article 4.

               SECTION 4.2 Stock Dividends, Stock Splits, Combinations and
Stock Reclassifications.  If the Company shall (i) pay a dividend on its
shares of capital stock (including Common Stock) in shares of Common Stock,
(ii) subdivide its outstanding shares of Common Stock, (iii) combine its
outstanding shares of Common Stock into a smaller number of shares of Common
Stock or (iv) issue any shares of its capital stock in a reclassification of
the Common Stock (including any such reclassification in connection with a
consolidation or merger in which the Company is the continuing corporation),
in each case, other than the Merger pursuant to the Merger Agreement, the
number of Warrant Shares purchasable upon exercise of each Warrant immediately
prior thereto shall be adjusted so that each Holder shall be entitled upon
exercise to receive the kind and number of Warrant Shares or other securities
of the Company which such Holder would have owned or have been entitled to
receive after the happening of any of the events described above, had such
Warrant been exercised immediately prior to the happening of such event or any
record date with respect thereto.  An adjustment made pursuant to this Section
4.2 shall become effective immediately after the effective date of such event
retroactive to the record date, if any, for such event.

               SECTION 4.3 Rights, Options and Warrants.  If the Company shall
issue any rights, options or warrants to holders of its outstanding Common
Stock (other than pursuant hereto, pursuant to stock option plans or similar
plans approved by the Board of Directors of the Company or pursuant to the
Merger Agreement), without payment of additional consideration by such
holders, entitling them (for a period expiring within 45 days after the record
date mentioned below) to subscribe for or purchase shares of Common Stock at a
price per share that is lower than the Market Price per share of Common Stock
at the record date mentioned below, the number of Warrant Shares thereafter
purchasable upon the exercise of each Warrant shall be determined by
multiplying the number of Warrant Shares theretofore purchasable upon exercise
of each Warrant by a fraction, of which the numerator shall be (i) the number
of shares of Common Stock outstanding on the record date for the issuance of
such rights, options or warrants plus the number of additional shares of
Common Stock offered for subscription or purchase, and of which the
denominator shall be (ii) the number of shares of Common Stock outstanding on
the record date for the issuance of such rights, options or warrants plus the
number of shares which the aggregate offering price of the total number of
shares of Common Stock so offered would purchase at the Market Price per share
of Common Stock at such record date.  Such adjustment shall be made whenever
such rights, options or warrants are issued, and shall become effective
immediately on the date of issuance retroactive to the record date for the
determination of stockholders entitled to receive such rights, options or
warrants.

               SECTION 4.4 Certain Distributions.  If the Company shall
distribute to all holders of its shares of Common Stock evidences of its
indebtedness of assets (excluding cash dividends or distributions payable out
of consolidated earnings or earned surplus and dividends or distributions
referred to Section 4.2) or rights, options or warrants or convertible or
exchangeable securities containing the right to subscribe for or purchase
shares of Common Stock (excluding those referred to in Section 4.3), then in
each case the number of Warrant Shares thereafter purchasable upon the
exercise of each Warrant shall be determined by multiplying the number of
Warrant Shares theretofore purchasable upon the exercise of each Warrant, by a
fraction, of which the numerator shall be (i) the then current Market Price
per share of Common Stock on the date of such distribution, and of which the
denominator shall be (ii) the then current Market Price per share of Common
Stock on the date of such distribution, less the then fair value (as
determined in good faith by the Board of Directors of the Company, whose
determination shall be conclusive and shall be evidenced by a resolution filed
with the Warrant Agent) of the portion of the assets or evidences of
indebtedness so distributed or of such subscription rights, options or
warrants or convertible or exchangeable securities applicable to one share of
Common Stock.  Such adjustment shall be made whenever any such distribution is
made, and shall become effective on the date of distribution retroactive to
the record date for the determination of stockholders entitled to receive such
distribution.

               SECTION 4.5 Capital Reorganizations and Stock
Reclassifications.  In the event of any capital reorganization or any
reclassification of the Common Stock (except as provided in Section 4.2,
4.3, 4.4 or 4.6), any Holder of Warrants upon exercise thereof shall be
entitled to receive, in lieu of the Common Stock to which such Holder would
have become entitled upon exercise immediately prior to such reorganization
or reclassification, the shares (of any class or classes) or other
securities or property of the Company that such Holder would have been
entitled to receive at the same aggregate Exercise Price upon such
reorganization or reclassification if such Holder's Warrants had been
exercised immediately prior thereto; and in any such case, appropriate
provision (as determined in good faith by the Board of Directors of the
Company, whose determination shall be conclusive and shall be evidenced by
a resolution filed with the Warrant Agent) shall be made for the
application of this Article 4 with respect to the rights and interests
thereafter of the Holders (including the allocation of the adjusted
Exercise Price between or among shares of classes of capital stock), to the
end that this Article 4 (including the adjustments of the number of shares
of Common Stock or other securities purchasable and the Exercise Price
thereof) shall thereafter be reflected, as nearly as reasonably
practicable, in all subsequent exercises of the Warrants for any shares or
securities or other property thereafter deliverable upon the exercise of
the Warrants.

               SECTION 4.6 Consolidations, Mergers, Sales and Conveyances.  In
case of any consolidation of the Company with or merger of the Company into
another corporation or in case of any sale or conveyance to another
corporation of the property of the Company as an entirety or substantially as
an entirety, the Company or such successor or purchasing corporation, as the
case may be, shall execute with the Warrant Agent an agreement that each
Holder shall have the right thereafter upon payment of the Exercise Price in
effect immediately prior to such action to purchase upon exercise of each
Warrant the kind and amount of shares and other securities and property which
such holder would have owned or have been entitled to receive after the
happening of such consolidation, merger, sale or conveyance had such Warrant
been exercised immediately prior to such action.  The Company shall mail by
first-class mail, postage prepaid, to each Holder, notice of the exception of
any such agreement.  Such agreement shall provide for adjustments, which shall
be as nearly equivalent as may be practicable to the adjustments provided for
in this Article 4.  The provisions of this Section 4.6 shall similarly apply
to successive consolidations, mergers, sales or conveyances.  The Warrant
Agent shall be under no duty or responsibility to determine the correctness of
any provisions contained in any such agreement relating either to the kind or
amount of shares of stock or other securities or property receivable upon
exercise of Warrants or with respect to the method employed and provided
therein for any adjustments and shall be entitled to rely upon the provisions
contained in any such agreement.

               SECTION 4.7 Adjustment Rules.  (a) For the purposes of
adjustments required by Section 4.2 and Section 4.3, the shares of Common
Stock that the holder of any rights, options, warrants or convertible or
exchangeable securities shall be entitled to subscribe for or purchase shall
be deemed to be issued and outstanding as of the date of sale, issuance or
distribution of such securities and the consideration, if any, received by the
Company therefor shall be deemed to be the consideration received by the
Company for such securities, plus the consideration or premiums stated in such
securities to be paid for the shares of Common Stock covered thereby.

               (b)  Except for adjustments required by Section 4.6, no
adjustment in the number of Warrant Shares purchasable hereunder shall be
required unless such adjustment would require an increase or decrease of at
least one percent in the number of Warrant Shares purchasable upon the
exercise of each Warrant; provided, however, that any adjustments which by
reason of this Section 4.7(b) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment.  All calculations
shall be made to the nearest cent and to the nearest one-hundredth of a share,
as the case may be.

               (c)  Whenever the number of Warrant Shares purchasable upon the
exercise of each Warrant is adjusted as herein provided (whether or not the
Company then or thereafter elects to issue additional Warrants in substitution
for an adjustment in the number of Warrant Shares as provided in Section
4.7(h)), the Exercise Price payable upon exercise of each Warrant shall be
adjusted by multiplying such Exercise Price immediately prior to such
adjustment by a fraction, of which the numerator shall be the number of
Warrant Shares purchasable upon the exercise of each Warrant immediately prior
to such adjustment, and of which the denominator shall be the number of
Warrant Shares so purchasable immediately thereafter, provided, however, that
the Exercise Price shall not be reduced below par unless the Company has taken
action pursuant to Section 2.8.

               (d)  For the purpose of this Article 4, the term "shares of
Common Stock" shall mean (i) the class of stock designated as the Common
Stock of the Company at the date of this Agreement, or (ii) any other class
of stock resulting from successive changes or reclassification of such
shares consisting solely of changes in par value, or from par value to no
par value, or from no par value to par value.  If at any time, as a result
of an adjustment made pursuant to Section 4.2 or Section 4.5 above, the
holders of Warrants shall become entitled to purchase any shares of the
Company other than shares of Common Stock, thereafter the number of such
other shares so purchasable upon exercise of each Warrant and the Exercise
Price with respect to such shares shall be subject to adjustment from time
to time in a manner and on terms as nearly equivalent as practicable to the
provisions with respect to the Warrant Shares contained in Section 4.2
through Section 4.5 and subsections (a), (b) and (c) of this Section 4.7,
inclusive, above, and the provisions of Sections 3.2, 3.5, 3.7 and 4.9,
with respect to the Warrant Shares, shall apply on like terms to any such
other shares.

               (e)  Except as provided in Sections 4.2, 4.3 and 4.4, no
adjustment in respect of any dividends shall be made during the term of a
Warrant or upon the exercise of a Warrant.

               (f)  Irrespective of any adjustments in the Exercise Price or
the number or kind of shares purchasable upon the exercise of the Warrants,
Warrants theretofore or thereafter issued may continue to express the same
price and number and kind of shares as are stated in the Warrants initially
issuable pursuant to this Agreement.

               (g)  Upon the expiration of any rights, options, warrants or
conversion or exchange privileges, if any thereof shall not have been
exercised, the Exercise Price and the number of Warrant Shares purchasable
upon the exercise of each Warrant shall, upon such expiration, be
readjusted and shall thereafter be such as it would have been had it been
originally adjusted (or had the original adjustment not been required, as
the case may be) as if (i) the only shares of Common Stock so issued were
the shares of Common Stock, if any, actually issued or sold upon the
exercise of such rights, options, warrants or conversions or exchange
rights and (ii) such shares of Common Stock, if any, were issued or sold
for the consideration actually received by the Company upon such exercise
plus the aggregate consideration, if any, actually received by the Company
for the issuance, sale or grant of all of such rights, options, warrants or
conversion or exchange rights whether or not exercised; provided, that no
such readjustment shall have the effect of increasing the Exercise Price or
decreasing the number of shares by an amount in excess of the amount of the
readjustment initially made in respect to the issuance, sale or grant of
such rights, options, warrants or conversion or exchange rights.

               (h)  The Company may elect, on or after the date of any
adjustment required by Section 4.2 through Section 4.5, to adjust the
number of Warrants in substitution for an adjustment in the number of
Warrant Shares purchasable upon the exercise of a Warrant.  Each of the
Warrants outstanding after such adjustment of the number of Warrants shall
be exercisable for the same number of Warrant Shares as immediately prior
to such adjustment.  Each Warrant held of record prior to such adjustment
of the number of Warrants shall become that number of Warrants (calculated
to the nearest hundredth) obtained by dividing the Exercise Price in effect
prior to adjustment of the Exercise Price by the Exercise Price in effect
after adjustment of the Exercise Price.  The Company shall notify the
Holders in the same manner as provided in Section 4.8, of its election to
adjust the number of Warrants, indicating the record date for the
adjustment, and, if known at the time, the amount of the adjustment to be
made.  This record date may be the date on which the Exercise Price is
adjusted or any date thereafter.  Upon each adjustment of the number of
Warrants pursuant to this Section 4.7(h) the Company shall, as promptly as
practicable, cause to be distributed to Holders as of such record date
Warrant Certificates evidencing, subject to Sections 2.8 and 2.11, the
additional Warrants to which such holders shall be entitled as a result of
such adjustment, or, at the option of the Company, shall cause to be
distributed to such holders of record in substitution and replacement for
the Warrant Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Company, new
Warrant Certificates evidencing all the Warrants to be issued, executed and
registered in the manner specified in Sections 3.2 and 3.3 (and which may
bear, at the option of the Company, the adjusted Exercise Price) and shall
be registered in the names of the Holders on the record date specified in
the notice.

               SECTION 4.8  Notice to Holders with Respect to Adjustments.
Not more than 30 days following the record date or effective date, as the case
may be, of any adjustment or readjustment pursuant to this Article 4, the
Company shall forthwith file in the custody of its Secretary or an Assistant
Secretary at its principal executive office and with the Warrant Agent, an
officers' certificate showing the adjusted number of Warrant Shares
purchasable upon exercise of the Warrants, the additional number of Warrants
to be issued for each outstanding Warrant or the adjusted Exercise Price, as
the case may be, determined as herein provided, setting forth in reasonable
detail the facts requiring such adjustment and the manner of computing such
adjustment.  Each such officers' certificate shall be signed by the Chairman,
President or Chief Financial Officer of the Company and by the Secretary or
any Assistant Secretary of the Company.  Each such officers' certificate shall
be made available at the Warrant Agent Office all reasonable times for
inspection by the Holder or any Holder of a Warrant and then upon written
request of a Holder the Warrant Agent shall mail a copy of such certificate by
first-class mail to such Holder.


                                   ARTICLE 5

                                 WARRANT AGENT

               SECTION 5.1 Appointment of Warrant Agent.  The Company hereby
appoints the Warrant Agent to act as agent for the Company in accordance with
the instructions hereinafter in this Agreement set forth; and the Warrant
Agent hereby accepts such appointment, upon the terms and conditions
hereinafter set forth.

               SECTION 5.2 Warrant Agent.  (a) The Warrant Agent undertakes
the duties and obligations imposed by this Agreement upon the following terms
and conditions, by all of which the Company and the Holders, by their
acceptance of the Warrants, shall be bound:

               (i)  the statements contained herein and in the Warrant
         Certificates shall be taken as statements of the Company, and the
         Warrant Agent assumes no responsibility for the correctness of any of
         the same except such as describes the Warrant Agent or action taken
         or be taken by it.  Except as herein otherwise provided, the Warrant
         Agent assumes no responsibility with respect to the execution,
         delivery or distribution of the Warrant Certificates.

               (ii)  The Warrant Agent shall not be responsible for any
         failure of the Company to comply with any of the covenants contained
         in this Agreement or in the Warrant Certificates to be complied with
         by the Company nor shall it at any time be under any duty or
         responsibility to any Holder to make or cause to be made any
         adjustment in the Exercise Price or in the number of Warrant Shares
         issuable upon exercise of any Warrant (except as instructed by the
         Company), or to determine whether any facts exist which may require
         any such adjustments, or with respect to the nature or extent of or
         method employed in making any such adjustments when made.

               (iii)  The Warrant Agent may consult at any time with counsel
         satisfactory to it (who may be counsel for the Company) and the
         Warrant Agent shall incur no liability or responsibility to the
         Company or any holder of any Warrant Certificate in respect of any
         action taken, suffered or omitted by it hereunder in good faith and
         in accordance with the opinion or the advice of such counsel.

               (iv)  The Warrant Agent shall incur no liability or
         responsibility to the Company or to any Holder for any action taken
         in reliance on any notice, resolution, waiver, consent, order,
         certificate or other paper, document or instrument believed by it to
         be genuine and to have been signed, sent or presented by the proper
         party or parties.

               (v)  The Company agrees promptly to pay the Warrant Agent the
         compensation to be agreed upon with the Company for all services
         rendered by the Warrant Agent and to reimburse the Warrant Agent for
         its reasonable out-of-pocket expenses (including attorneys' fees and
         expenses) incurred by the Warrant Agent without negligence, bad faith
         or breach of this Agreement on its part in connection with the
         services rendered by it hereunder.  The Company also agrees to
         indemnify the Warrant Agent for, and to hold it harmless against, any
         loss, liability or expense (including reasonable attorneys' fees and
         expenses) incurred without negligence, bad faith or breach of this
         Agreement on the part of the Warrant Agent, arising out of or in
         connection with its acting as such Warrant Agent hereunder, as well
         as the reasonable costs and expenses of defending against any claim
         of liability in the premises.  The obligations of the Company under
         this Section 5.2 shall survive the termination of this Agreement.

               (vi)  The Warrant Agent shall be under no obligation to
         institute any action, suit or legal proceeding or to take any other
         action likely to involve expense unless the Company or one or more
         registered holders of Warrant Certificates shall furnish the Warrant
         Agent with reasonable security and indemnity for any costs or
         expenses which may be incurred.  All rights of action under this
         Agreement or under any of the Warrants may be enforced by the Warrant
         Agent without possession of any of the Warrant Certificates or the
         production thereof at any trial or other proceeding relative thereto,
         and any such action, suit or proceeding instituted by the Warrant
         Agent shall be brought in its name as Warrant Agent, and any recovery
         or judgment shall be for the ratable benefit of the Holders, as their
         respective rights or interests may appear.

               (vii)  The Warrant Agent, and any stockholder, director,
         officer or employee thereof, may buy, sell or deal in any of the
         Warrants or other securities of the Company or become pecuniarily
         interested in any transaction in which the Company may be interested,
         or contract with or lend money to the Company or otherwise act as
         fully and freely as though they were not the Warrant Agent under this
         Agreement, or a stockholder, director, officer or employee of the
         Warrant Agent, as the case may be.  Nothing herein shall preclude the
         Warrant Agent from acting in any other capacity for the Company or
         for any other legal entity.

               (viii)  The Warrant Agent shall act hereunder solely as agent
         for the Company, and its duties shall be determined solely by the
         provisions hereof.  The Warrant Agent shall not be liable for
         anything which it may do or refrain from doing in connection with
         this Agreement except for its own negligence or bad faith.

               (ix)  The Company agrees that it will perform, execute,
         acknowledge and deliver or cause to be performed, executed,
         acknowledged and delivered all such further and other acts,
         instruments and assurances as may reasonably be required by the
         Warrant Agent for the carrying out or performing of the provisions of
         this Agreement.

               (x)  The Warrant Agent shall not be under any responsibility in
         respect of the validity of this Agreement or the execution and
         delivery hereof (except the due execution hereof by the Warrant
         Agent) or in respect of the validity or execution of any Warrant
         Certificate (except its countersignature thereof), nor shall the
         Warrant Agent by any act hereunder be deemed to make any
         representation or warrant as to the authorization or reservation of
         the Warrant Shares to be issued pursuant to this Agreement or any
         Warrant Certificate or as to whether the Warrant Shares will when
         issued be validly issued, fully paid and nonassessable or as to the
         Exercise Price or the number of Warrant Shares issuable upon exercise
         of any Warrant.

               (xi)  The Warrant Agent is hereby authorized and directed to
         accept instructions with respect to the performance of its duties
         hereunder from the Chairman of the Board, the Chief Executive
         Officer, the President, any Vice President, the Treasurer, the
         Secretary or an Assistant Secretary of the Company, and to apply to
         such officers for advice or instructions in connection with its
         duties, and shall not be liable for any action taken or suffered to
         be taken by it in good faith in accordance with instruction of any
         such officer or in good faith reliance upon any statement signed by
         any one of such officers of the Company with respect to any fact or
         matter (unless other evidence in respect thereof is herein
         specifically prescribed) which may be deemed to be conclusively
         proved and established by such signed statement.

               SECTION 5.3 Change of Warrant Agent.  If the Warrant Agent
shall resign (such resignation to become effective not earlier than 60 days
after the giving of written notice thereof to the Company and the Holders) or
shall become incapable of acting as Warrant Agent or if the Board of Directors
of the Company shall by resolution remove the Warrant Agent (such removal to
become effective not earlier than 30 days after the filing of a certified copy
of such resolution with the Warrant Agent and the giving of written notice of
such removal to the registered holders of Warrant Certificates), the Company
shall appoint a successor to the Warrant Agent.  If the Company shall fail to
make such appointment within a period of 30 days after such removal or after
it has been so notified in writing of such resignation or incapacity by the
Warrant Agent, then any Holder may apply to any court of competent
jurisdiction for the appointment of a successor to the Warrant Agent.  Pending
appointment of a successor to the Warrant Agent, either by the Company or by
such a court, the duties of the Warrant Agent shall be carried out by the
Company.  Any successor Warrant Agent, whether appointed by the Company or by
such a court, shall be a bank or trust company, in good standing, incorporated
under the laws of any state or of the United States of America.  As soon as
practicable after appointment of the successor Warrant Agent, the Company
shall cause written notice of the change in the Warrant Agent to be given to
each of the Holders at such Holder's address appearing on the Warrant
Register.  After appointment, the successor Warrant Agent shall be vested with
the same powers, rights, duties and responsibilities as if it had been
originally named as Warrant Agent without further act or deed.  The former
Warrant Agent shall deliver and transfer to the successor Warrant Agent any
property at the time held by it hereunder and execute and deliver, at the
expense of the Company, any further assurance, conveyance, act or deed
necessary for the purpose.  Failure to give any notice provided for in this
Section 5.3 or any defect therein, shall not affect the legality or validity
of the removal of the Warrant Agent or the appointment of a successor Warrant
Agent, as the case may be.

               SECTION 5.4 Merger, Consolidation or Change of Name of Warrant
Agent.  (a) Any corporation into which the Warrant Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Warrant Agent shall
be a party, or any corporation succeeding to the shareholder services business
of the Warrant Agent, shall be the successor to the Warrant Agent hereunder
without the execution or filing of any paper or any further act on the part of
any of the parties hereto, provided that such corporation would be eligible
for appointment as a successor Warrant Agent under the provisions of Section
5.3.  If at the time such successor to the Warrant Agent shall succeed under
this Agreement, any of the Warrant Certificates shall have been countersigned
but not delivered, any such successor to the Warrant Agent may adopt the
countersignature of the original Warrant Agent, and if at that time any of the
Warrant Certificates shall not have been countersigned, any successor to the
Warrant Agent may countersign such Warrant Certificates either in the name of
the predecessor Warrant Agent or in the name of the successor Warrant Agent;
and in all such cases such Warrant Certificates shall have the full force
provided in the Warrant Certificates and in this Agreement.

               (b)  If at any time the name of the Warrant Agent shall be
changed and at such time any of the Warrant Certificates shall have been
countersigned but not delivered, the Warrant Agent whose name has changed may
adopt the countersignature under its prior name; and if at that time any of
the Warrant Certificates shall not have been countersigned, the Warrant Agent
may countersign such Warrant Certificates either in its prior name or in its
changed name; and in all such cases such Warrant Certificates shall have the
full force provided in the Warrant Certificates and in this Agreement.


                                   ARTICLE 6

                                 MISCELLANEOUS

               SECTION 6.1 Notices.  (a) Except as otherwise provided in
Section 6.1(b) any notice, demand or delivery authorized by this Warrant
Agreement shall be sufficiently given or made when mailed if sent by
first-class mail, postage prepaid, addressed to any Holder of a Warrant at
such Holder's address shown on the Warrant Register and to the parties as
follows:

If to the Company:

National Health Laboratories Holdings Inc.
4225 Executive Square
Suite 805
La Jolla, CA  92037
Attention:  General Counsel

If to the Warrant Agent:

American Stock Transfer & Trust Company
6201 Fifteenth Avenue
Brooklyn, NY  11219
Attention:  Joseph Wolf

or such other address as shall have been furnished to the party giving or
making such notice, demand or delivery.

               (b)  Any notice required to be given by the Company to the
Holders shall be made by mailing by registered mail, return receipt requested,
to the Holders at their respective addresses shown on the Warrant Register.
The Company hereby irrevocably authorizes the Warrant Agent, in the name and
at the expense of the Company, to mail any such notice upon receipt thereof
from the Company.  Any notice that is mailed in the manner herein provided
shall be presumed to have been duly given when mailed.

               SECTION 6.2 Supplements and Amendments.  The Company and the
Warrant Agent may from time to time supplement or amend this Agreement without
the approval of any Holders in order to cure any ambiguity, manifest error or
other mistake in this Agreement, or to correct or supplement any provision
contained herein that may be defective or inconsistent with any other
provision herein, or to make any other provisions in regard to matters or
questions arising hereunder that the Company and the Warrant Agent may deem
necessary or desirable and that shall not adversely affect, alter or change
the interest of the Holders.

               SECTION 6.3 Termination.  This Agreement shall terminate
immediately after (i) the Company has paid the Redemption Amount with respect
to all Holders in the case of a Redemption or (ii) all Warrant Shares in
respect of properly exercised Warrants have been issued in the case the Company
does not elect to effect a Redemption pursuant to Section 2.7, provided, that
the provisions of Section 5.2 shall survive such termination until such time
that the obligations contemplated thereunder have been performed.

               SECTION 6.4 Governing Law.  This Agreement and each Warrant
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the State of New York and for all purposes shall be governed by and
construed in accordance with the internal laws of such State.

               SECTION 6.5 Persons Benefiting.  This Warrant Agreement shall
be binding upon and inure to the benefit of the Company and the Warrant Agent,
and their respective successors, assigns, beneficiaries, executors and
administrators, and the Holders of the Warrants.  Nothing in this Warrant
Agreement is intended or shall be construed to confer upon any person, other
than the Company, the Warrant Agent and the Holders of the Warrants, any
right, remedy or claim under or by reason of this Warrant Agreement or any
part hereof.

               SECTION 6.6 Counterparts.  This Agreement may be executed in
any number of counterparts and each of such counterparts shall for all
purposes be deemed to be an original, and such counterparts shall together
constitute but one and the same instrument.

               SECTION 6.7 Headings.  The headings of sections of this
Agreement have been inserted for convenience of reference only, are not to be
considered a part hereof and shall in no way modify or restrict any of the
terms or provisions hereof.


               IN WITNESS WHEREOF, the parties hereto have caused this Warrant
Agreement to be executed and delivered as of the day and year first above
written.

                                      NATIONAL HEALTH LABORATORIES
                                       HOLDINGS INC.


                                      By /s/ David C. Flaugh
                                        ______________________________
                                       Title:  David C. Flaugh
                                               Senior Executive Vice President
                                               Chief Operating Officer

ATTEST:

/s/ John F. Markus
_____________________________
         John F. Markus
         Executive Vice President
         Assistant Secretary

                                       AMERICAN STOCK TRANSFER
                                         & TRUST COMPANY


                                       By /s/ Herbert J. Lemmer
                                         ______________________________
                                         Title:  Herbert J. Lemmer
                                                 Vice President

ATTEST:

  /s/ Susan Silber
_____________________________
         Susan Silber
         Assistant Secretary


                                                                     Exhibit A


                  WARRANTS TO PURCHASE SHARES OF COMMON STOCK


                                                            NUMBER OF WARRANTS


                  LABORATORY CORPORATION OF AMERICA HOLDINGS

          EXPIRING AT 5:00 P.M. NEW YORK CITY TIME ON APRIL 28, 2000


                                                             CUSIP 5054OR 11 0

            This Warrant Certificate certifies that





            or registered assigns,


is the registered holder (the "Holder") of the number of warrants set forth
above (each, a "Warrant") issued by Laboratory Corporation of America
Holdings, a Delaware corporation (the "Company"), subject to the terms and
conditions set forth herein and in the Warrant Agreement referred to on the
reverse side hereof.  Each Warrant entitles the Holder thereof to purchase from
the Company one fully paid and nonassessable share (a "Warrant Share") of
common stock, $0.01 par value (the "Common Stock"), of the Company at the
initial exercise price per share of $22.00 (the "Exercise Price"), payable in
lawful money of the United States of America, subject to adjustment as
described below.  The Warrants evidenced by this Certificate expire at 5:00
p.m. New York City Time (the "Close of Business") on April 28, 2000 (the
"Expiration Date") unless such date is extended at the option of the Company
as set forth in the Warrant Agreement referred to on the reverse side hereof.

            Subject to the terms and conditions set forth herein and in the
Warrant Agreement referred to on the reverse side hereof, a Warrant may be
exercised upon proper surrender of this Warrant Certificate and payment of the
aggregate Exercise Price to American Stock Transfer & Trust Company (the
"Warrant Agent") at 40 Wall Street, 46th Floor, New York, NY  10005 or such
other of its offices as may be designated by the Warrant Agent (the "Warrant
Agent Office").

            The number of Warrants, the Exercise Price and the number of
Warrant Shares purchasable upon exercise of a Warrant are subject to
adjustment upon the occurrence of certain events as set forth in Article 4 of
the Warrant Agreement referred to on the reverse side hereof

            Upon notice to the Warrant Agent in accordance with the Warrant
Agreement, the Company may at its sole option elect to redeem all but not less
than all of the Warrants on the Expiration Date by payment of an amount in
cash in respect of each Warrant equal to the Redemption Amount (as defined in
the Warrant Agreement).  If the Company shall have duly elected to redeem the
Warrants but the aggregate Redemption Amount is zero or less than zero, no
amount shall be required to be paid by the Company in respect of the
redemption of the Warrants but the Warrants shall nonetheless be deemed to
have been redeemed.

            A Warrant may only be exercised prior to the Close of Business on
the Expiration Date and only if the Company shall not have elected to redeem
the Warrants (provided that the Warrant Agent will accept surrenders of
Warrant Certificates and payments of the Exercise Price in respect of Warrants
to be exercised during the 45-day period preceding the Expiration Date, but
such Warrants will not be deemed to have been exercised until the Expiration
Date).  As of the Close of Business on the Expiration Date, the Warrants will
become wholly void and of no value.

            This Warrant Certificate shall be governed by and construed in
accordance with the internal laws of the State of New York.

            REFERENCE IS HEREBY MADE TO THE FURTHER PROVISIONS OF THIS WARRANT
CERTIFICATE SET FORTH ON THE REVERSE SIDE HEREOF.  SUCH FURTHER PROVISIONS
SHALL FOR ALL PURPOSES HAVE THE SAME EFFECT AS THOUGH FULLY SET FORTH AT THIS
PLACE.

            This Warrant Certificate shall not be valid unless countersigned
by the Warrant Agent.



            IN WITNESS WHEREOF, the Company has caused this Certificate to be
executed by the facsimile signature of its duly authorized officer, and the
facsimile of the corporate seal hereunto affixed.

Dated:

                       LABORATORY CORPORATION OF AMERICA HOLDINGS

                       By    /s/ James B. Powell
                             _____________________________
                             PRESIDENT



                       ATTEST

                       By    /s/ Bradford T. Smith
                             _____________________________
                             SECRETARY

                    [facsimile of the seal of the Company]


COUNTERSIGNED AND REGISTERED
         AMERICAN STOCK TRANSFER & TRUST COMPANY
            NEW YORK, NY     AS WARRANT AGENT,


BY __________________________


                       AUTHORIZED OFFICER

                  LABORATORY CORPORATION OF AMERICA HOLDINGS


            THIS WARRANT CERTIFICATE IS ISSUED UNDER AND IN ACCORDANCE WITH A
WARRANT AGREEMENT, DATED AS OF APRIL 10, 1995, BETWEEN THE COMPANY AND THE
WARRANT AGENT (THE "WARRANT AGREEMENT"), AND IS SUBJECT TO THE TERMS AND
CONDITIONS CONTAINED IN THE WARRANT AGREEMENT.  THE WARRANT AGREEMENT IS
HEREBY INCORPORATED BY REFERENCE IN AND MADE A PART OF THIS INSTRUMENT AND IS
HEREBY REFERRED TO FOR A DESCRIPTION OF THE RIGHTS, LIMITATIONS OF RIGHTS,
OBLIGATIONS, DUTIES AND IMMUNITIES THEREUNDER OF THE WARRANT AGENT, THE
COMPANY AND THE HOLDERS.  A COPY OF THE WARRANT AGREEMENT MAY BE INSPECTED AT
THE WARRANT AGENT OFFICE AND WILL BE PROVIDED BY FIRST-CLASS MAIL, WITHOUT
CHARGE, TO ANY REGISTERED HOLDER UPON WRITTEN REQUEST ADDRESSED TO THE WARRANT
AGENT AT THE WARRANT AGENT OFFICE.  ALL TERMS USED BUT NOT DEFINED HEREIN HAVE
THE MEANINGS ASSIGNED TO THEM IN THE WARRANT AGREEMENT.

            Warrants may be exercised to purchase Warrant Shares from the
Company on, but prior to the Close of Business on, the Expiration Date, at the
Exercise Practice set forth on the face hereof, subject to adjustment as
described in the Warrant Agreement, but only if the Company shall not have
elected to redeem the Warrants as described below.  The registered Holder of
the Warrants evidenced by this Warrant Certificate may exercise such Warrants
by surrendering to the Warrant Agent this Warrant Certificate, with the form
of election to exercise set forth hereon properly completed and executed,
together with payment of the aggregate Exercise Price, in lawful money of the
United States of America, to the Warrant Agent at the Warrant Agent Office.
Although such surrender and payment will be accepted during the 45-day period
preceding the Expiration Date, Warrants will not be deemed to have been
exercised until the Expiration Date.

            No adjustment shall be made for any cash dividends on any Warrant
Shares issuable upon exercise of this Warrant.

            Upon notice to the Warrant Agent not earlier than 90 days nor
later than 60 days prior to the Expiration Date, the Company may at its sole
option elect to redeem all but not less than all Warrants on the Expiration
Date by payment of an amount in cash in respect of each Warrant equal to the
Redemption Amount (as defined in the Warrant Agreement).  If the Company shall
have duly elected to redeem the Warrants but the aggregate Redemption Amount
is zero or less than zero, no amount shall be required to be paid by the
Company in respect of the redemption of the Warrants but the Warrants shall
nonetheless be deemed to have been redeemed.

            Warrants shall expire at and become null and void and have no
value and no Person shall have any rights with respect thereto as of the Close
of Business on the Expiration Date, provided, however, that, notwithstanding
such expiration, Holders who have properly exercised Warrants in accordance
herewith and with the Warrant Agreement prior to such Close of Business shall
be entitled to receive Warrant Shares with respect to such Holders' Warrants
unless the Company shall have elected to redeem the Warrants as described
below, in which case each Holder shall be entitled to receive the Redemption
Amount.

            No certificates or script representing fractional Warrant Shares
shall be issued upon exercise of a Warrant.  As promptly as practicable
following the Expiration Date, if the Company shall not have elected to redeem
the Warrants, the Company shall pay to each Holder otherwise entitled to
receive fractional Warrant Shares, if any, a cash amount in lieu of such
fractional Warrant Shares which shall be equal to the proceeds from the sale
of such Holder's fractional Warrant Shares as provided in the Warrant
Agreement, without interest thereon and after deduction of all commissions,
transfer taxes and other out-of-pocket transaction costs, including the
expenses and compensation of the Warrant Agent, incurred in connection with
such sale of the fractional Warrant Shares.

            Warrant Certificates, when surrendered at the Warrant Agent office
in person or by a legal representative or attorney duly authorized in writing,
may be exchanged, in the manner and subject to the limitations provided in the
Warrant Agreement, but without payment of any service charge, for another
Warrant Certificate or Warrant Certificates of like tenor evidencing a Warrant
to purchase in the aggregate a like number of Warrant Shares.

            A new Warrant Certificate or Warrant Certificates of like tenor
and evidencing a Warrant or Warrants to purchase in the aggregate a like
number of Warrant Shares shall be issued to a transferee designated by a
Holder upon surrender of a Warrant Certificate, duly endorsed, and
accompanied by a written instrument or instruments of transfer in a form
satisfactory to the Warrant Agent, duly signed by the Holder or Holders or
by the duly appointed legal representative thereof or by a duly authorized
attorney, such signature to be guaranteed by (i) a bank or trust company,
(ii) a broker or dealer that is a member of the National Association of
Securities Dealers, Inc. or (iii) a member of national securities exchange,
and funds sufficient to pay any transfer taxes payable on such transfer.

            Notwithstanding the foregoing, the Warrant Agent shall not be
required to register the transfer or exchange of any Warrant Certificate from
and after the 105th day preceding the scheduled Expiration Date, provided that
if, in the notice provided by the Company pursuant to Section 2.5 of the
Warrant Agreement, the Company shall not have elected to redeem the Warrants,
then the Warrant Agent shall permit transfers or exchanges of Warrant
Certificates from and after the mailing of the notice to Holders referred to
in Section 2.5 of the Warrant Agreement but shall not be required to register
the transfer or exchange of any Warrant Certificate from and after the 15th
day preceding the Expiration date.

            The Company and its subsidiaries shall have the option, in their
sole discretion, at any time or from time to time, to purchase Warrants (i) in
the public market, (ii) by tender or exchange offer available to all Holders
at any price or (iii) in private transactions at a price not more than ten
percent (10%) over the Market Price of the Warrants as of the closing date of
each such transaction.  Warrants acquired by the Company or its subsidiaries
shall be canceled and shall not be available for reissuance or resale.

            The Company and the Warrant Agent may deem and treat the
registered Holder hereof as the absolute owner of this Warrant Certificate
(notwithstanding any notation of ownership or other writing hereon made by
anyone) for the purpose of any exercise hereof and for all other purposes, and
neither the Company nor the Warrant Agent shall be affected by any notice to
the contrary.


                         FORM OF ELECTION TO EXERCISE
        (To Be Executed by Registered Holder Upon Exercise of Warrant)

         The undersigned hereby irrevocably elects to exercise the right
represented by this Warrant Certificate to receive     shares of Common Stock
and herewith tenders payment for such shares to the order of Laboratory
Corporation of America Holdings in care of American Stock Transfer & Trust
Company, 40 Wall Street, 46th Floor, New York, NY. 10005, in the amount of $
          in lawful money of the United States of America by certified or
official bank check or by wire transfer in accordance with the terms hereof.
The undersigned requests that a certificate for such shares be registered in
the name of _________________________________________________________________
whose address is
_____________________________________________________________________________
and whose Social Security or Taxpayer identification Number
is____________________________________ and that such shares be delivered to
_____________________________________________________________________________
whose address is
_____________________________________________________________________________


Dated:____________________, 20__

Signature:_________________________

Note:  The above signature must
correspond with the name as written
upon the face of the Warrant

Certificate in every particular without
alteration or enlargement of any change
whatsoever.


Signature

Guaranteed:_____________________________

   The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as through they were written out 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 entireties              (custodian)      (minor)
JT TEN   -- as joint tenants with the right of survivorship andunder Uniform
             Gift to Minors not as tenants in common   Act _________________
                                                               (State)

    Additional abbreviations may also be used though not in the above list.


                              FORM OF ASSIGNMENT
     (To Be Executed by Registered Holder Upon Assignment of the Warrant)

   FOR VALUE RECEIVED, the undersigned registered Holder hereby sells, assigns
and transfers unto
_____________________________________________________________________________
whose address
is_ _________________________________________________________________________
and whose Social Security or Taxpayer Identification Number is
_____________________________________________________________________________
_____________________________________________________________________________
the Warrants represented by this Warrant Certificate, together with all right,
title and interest therein, and does hereby irrevocably constitute and appoint
___________________________________________________ attorney, to transfer the
within Warrant Certificate on the books of the Warrant Agent, with full power
of substitution.


Dated: _________________

Signature:_______________________________
Note:  The above signature must
correspond with the name as written
upon the face of the Warrant Certificate
in every particular without alteration or
enlargement or any change whatsoever

Signature

Guaranteed:_____________________________

                                                               Exhibit 3
                                                               Conformed Copy
                             STOCKHOLDER AGREEMENT


                          dated as of April 28, 1995


                                     among


                              HLR Holdings Inc.,

                             Roche Holdings, Inc.,

                            Hoffmann-La Roche Inc.

                                      and


                  National Health Laboratories Holdings Inc.



                               TABLE OF CONTENTS
                                                                      Page
                                                                      ----

                                   ARTICLE 1
                                  DEFINITIONS

      1.1.  Definitions.................................................  1


                                   ARTICLE 2
                             CORPORATE GOVERNANCE

      2.1.  Composition of the Board of Directors.......................  7
      2.2.  Solicitation and Voting of Shares...........................  9
      2.3.  Committees of the Board of Directors........................ 10
      2.4.  Management Committee........................................ 11
      2.5.  Notice for Board and Committee Meetings..................... 12
      2.6.  Vacancies on Board Committees and the Management Committee.. 12
      2.7.  Approval Required for Certain Actions....................... 12
      2.8.  Enforcement of this Agreement............................... 15
      2.9.  Certificate of Incorporation and By-laws.................... 15
      2.10. Governance of Company Subsidiaries.......................... 15
      2.11. Strategic Planning Process.................................. 15
      2.12. Operating Planning Processes................................ 16
      2.13. Headquarters of the Company................................. 16


                                   ARTICLE 3
                             ANTI-DILUTIVE RIGHTS

      3.1.  Anti-dilutive Rights........................................ 16


                                   ARTICLE 4
                 ACQUISITIONS OF ADDITIONAL EQUITY SECURITIES

      4.1.  Limitation on Additional Acquisitions....................... 17


                                   ARTICLE 5
                        TRANSFERS OF EQUITY SECURITIES

      5.1.  Transfers of Equity Securities.............................. 18


                                   ARTICLE 6
                              REGISTRATION RIGHTS

      6.1.  Demand Registration......................................... 18
      6.2.  Conditions to Demand Registrations.......................... 18
      6.3.  Additional Conditions to Demand Offerings................... 19
      6.4.  Piggyback Registration...................................... 20
      6.5.  Reduction of Offering....................................... 20
      6.6.  Filings; Registration Procedures............................ 21
      6.7.  Registration Expenses....................................... 23
      6.8.  Indemnification by the Company.............................. 23
      6.9.  Indemnification by the Investor............................. 24
      6.10. Conduct of Indemnification Proceedings...................... 24
      6.11. Contribution................................................ 25


                                   ARTICLE 7
                           FURNISHING OF INFORMATION

      7.1.  Furnishing of Information................................... 26


                                   ARTICLE 8
                                   COVENANTS

      8.1.  Rule 144 and Rule 144A...................................... 27
      8.2.  No Inconsistent Agreements.................................. 28


                                   ARTICLE 9
                                 MISCELLANEOUS

      9.1.  Notices..................................................... 28
      9.2.  Amendments; Waivers......................................... 29
      9.3.  Severability................................................ 29
      9.4.  Entire Agreement............................................ 29
      9.5.  Successors and Assigns...................................... 30
      9.6.  Parties in Interest......................................... 30
      9.7.  Counterparts; Effectiveness................................. 30
      9.8.  Governing Law............................................... 30
      9.9.  Specific Performance........................................ 30
      9.10. Termination................................................. 30
      9.11. Waiver of Jury Trial........................................ 31


                             STOCKHOLDER AGREEMENT



         STOCKHOLDER AGREEMENT dated as of April 28, 1995 among HLR Holdings
Inc., a Delaware corporation ("HLR"), Roche Holdings, Inc., a Delaware
corporation ("Holdings") (HLR and Holdings are referred to herein collectively
as the "Investor"), Hoffmann-La Roche Inc., a New Jersey corporation (the
"Roche Holder" and, for purposes of Articles 6 and 8, the Roche Holder shall
be deemed to be, together with HLR and Holdings, the "Investor"), and National
Health Laboratories Holdings Inc., a Delaware corporation (the "Company").

         WHEREAS, the Company, the Investor and Roche Biomedical Laboratories,
Inc., a wholly-owned subsidiary of the Investor ("RBL"), entered into an
Agreement and Plan of Merger dated as of December 13, 1994 (the "Merger
Agreement") pursuant to which among other things (i) RBL is being merged with
and into the Company (the "Merger"), (ii) all of the issued and outstanding
stock of RBL (except for shares held by RBL in its treasury) is being
converted in the Merger into shares of Common Stock (as defined below) of the
Company, (iii) Roche Holder is purchasing certain warrants (the "Roche
Warrants") from the Company at the Effective Time and (iv) shares of the
Company's Common Stock are being converted in the Merger into the Conversion
Consideration (as defined in the Merger Agreement), all upon the terms and
subject to the conditions set forth in the Merger Agreement; and

         WHEREAS, the Investor, the Company, Mafco Holdings Inc., a Delaware
corporation ("Mafco") and National Health Care Group, Inc., a Delaware
corporation ("NHCG") and a significant stockholder of the Company, have
entered into the Sharing and Call Option Agreement dated as of December 13,
1994 providing, among other things, certain rights and obligations with
respect to the Company's Common Stock held by NHCG (the "Sharing and Call
Option Agreement"); and

         WHEREAS, in connection with the Merger, the Investor, Roche Holder
and the Company desire to set forth certain agreements and understandings
regarding the Investor's and Roche Holder's interests in the Company;

         NOW, THEREFORE, in consideration of the foregoing and the mutual
promises and agreements contained herein, the Investor, Roche Holder and the
Company hereby agree as follows:


                                   ARTICLE 1
                                  DEFINITIONS

         SECTION 1.1.   Definitions.  Capitalized terms used and not defined
herein shall have the meanings assigned to them in the Merger Agreement.  As
used in this Agreement, the following terms shall have the following meanings:

         "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under common control
with such Person, provided that no member of the Investor Group shall be
deemed an Affiliate of any other stockholder solely by reason of any
investment in the Company.  For the purpose of this definition, the term
"control" (including with correlative meanings, the terms "controlling",
"controlled by" and "under common control with"), as used with respect to any
Person, shall mean the possession, directly or indirectly, of the power to
direct or cause the direction of the management and policies of such Person,
whether through the ownership of voting securities or by contract or otherwise.

         "Annual Operating Plan" means, for any year, the operating plan of
the Company and its Subsidiaries which plan shall provide for an analysis of
gross profits, summary of operating expenses, personnel levels, pricing,
budgets for niche businesses, cash flows, capital expenditures and return on
funds assigned, and shall be consistent with the then applicable  Strategic
Plan or the Initial Synergy Plan (as applicable) of the Company.

         "Anti-dilutive Rights" has the meaning set forth in Section 3.1(a)
hereof.

         "Associate" has the same meaning as in Rule 12b-2 promulgated under
the Exchange Act as in effect on the date hereof.

         "Audit Committee" means the Audit Committee of the Board of Directors
described in Section  2.3(a)(i)hereof.

         "Board" or "Board of Directors" means the Board of Directors of the
Company except where the context requires otherwise.

         "Business Day" means any day except a Saturday, Sunday or other day
on which commercial banking institutions in New York City are authorized by
law or executive order to close.

         "By-laws" means the by-laws of the Company, as amended from time to
time in accordance herewith.

         "Certificate of Incorporation" means the certificate of incorporation
of the Company, as amended from time to time in accordance herewith.

         "Common Stock" means the common stock of the Company, par value $.01
per share.

         "Company" has the meaning set forth in the recitals of this
Agreement.

         "Demand Registration" has the meaning described in Section 6.1(a)
hereof.

         "Director" means a member of the Board of Directors.

         "Discriminatory Transaction" means any transaction or other corporate
action (other than those imposed pursuant to the express terms of this
Agreement and other than those imposed with identical effect on all
stockholders) which would (x) impose limitations on the legal rights of the
Investor or any of its Affiliates or Associates as a stockholder of the
Company, including, without limitation, any action which would impose
restrictions based upon the size of security holding, nationality of a
securityholder, the business in which a securityholder is engaged or other
considerations applicable to the Investor and not to stockholders generally,
(y) deny any benefit to the Investor or any of its Affiliates or Associates,
proportionately as a holder of any class of Voting Stock, that is made
available to other holders of any class of Voting Stock or (z) otherwise
materially adversely discriminate against the Investor, its Affiliates or its
Associates as stockholders of the Company.

         "Effectiveness of this Agreement" means the Effective Time (as
defined in the Merger Agreement).

         "Employee Benefits Committee" means the Employee Benefits Committee
of the Board of Directors described in Section 2.3(a)(iii) hereof.

         "Equity Security" means (i) any Common Stock or other Voting Stock,
(ii) any debt or equity securities of the Company convertible into or
exchangeable for Common Stock or other Voting Stock or (iii) any options,
rights or warrants (including the Warrants and any similar securities) issued
by the Company to acquire Common Stock or other Voting Stock.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder.

         "GAAP" means generally accepted accounting principles in effect in
the United States.

         "HLR" has the meaning set forth in the recitals of this Agreement.

         "Holdings" has the meaning set forth in the recitals of this
Agreement.

         "Indebtedness" of any Person means, without duplication, (i) all
obligations of such Person for borrowed money, (ii) all obligations of such
Person under conditional sale or other title retention agreements relating to
property or assets purchased by such Person, (iii) all obligations of such
Person issued or assumed as the deferred purchase price of property or
services, (iv) all Indebtedness of others secured by (or for which the holder
of such Indebtedness has an existing right, contingent or otherwise, to be
secured by) any lien on property owned or acquired by such Person, whether or
not the obligations secured thereby have been assumed, (v) all guarantees by
such Person of Indebtedness of others, (vi) all obligations of such Person in
respect to interest rate protection agreements, foreign currency exchange
agreements or other interest or exchange rate hedging arrangements, in each
case other than those entered into primarily as a hedge, and (vii) all capital
lease obligations of such Person.

         "Indemnified Party" has the meaning set forth in Section 6.10 hereof.

         "Indemnifying Party" has the meaning set forth in Section 6.10
hereof.

         "Independent Director" means a Director of the Company who is none of
(i) an officer, employee, Affiliate or Associate of the Company or an officer,
employee or director of any Affiliate or Associate of the Company, (ii) an
officer, employee, director, Affiliate or Associate of the Investor or (iii)
an Investor Director.

         "Initial Period" has the meaning set forth in Section 2.1(b) hereof.

         "Initial Synergy Plan" means the Strategic Plan applicable to the
initial two-year period following the Effectiveness of this Agreement.

         "Inspectors" has the meaning set forth in Section 6.6(h) hereof.

         "Investor" has the meaning set forth in the recitals of this
Agreement.

         "Investor Director" means a Director who has been designated for such
position by the Investor in accordance with Section 2.1(b) hereof.

         "Investor Group" means the Investor and its Affiliates (other than
the Company and its Subsidiaries).

         "Investor Group Interest" means the percentage of Total Voting Power,
determined on the basis of the number of shares of Voting Stock actually
outstanding, that is controlled, directly or indirectly, by the Investor and
its Affiliates (other than the Company and its Subsidiaries).

         "Maintenance Securities" has the meaning set forth in Section 3.1(a)
hereof.

         "Management Committee" means the Management Committee of the Company
as described in Section 2.4 hereof.

         "Market Purchase" means an acquisition of Equity Securities that is
within the definition of "Rule 10b-18 purchase" under Rule 10b-18(a)(3)
promulgated under the Exchange Act as in effect on the date hereof that
satisfies the conditions of Rule 10b-18(b).

         "Merger" has the meaning set forth in the recitals of this Agreement.

         "Merger Agreement" has the meaning set forth in the recitals of this
Agreement.

         "Nominating Committee" means the Nominating Committee of the Board of
Directors as described in Section 2.3(a)(ii) hereof.

         "Other Holders" means holders of Equity Securities other than any
member of the Investor Group.

         "Person" means an individual, a partnership, a joint venture, a
corporation, a trust, an incorporated or unincorporated organization, a
government or any department or agency thereof.

         "Piggyback Registration" has the meaning set forth in Section 6.4
hereof.

         "Public Offering" means an underwritten public offering of Equity
Securities pursuant to an effective Registration Statement under the
Securities Act.

         "RBL" has the meaning set forth in the recitals of this Agreement.

         "Records" has the meaning set forth in Section  6.6(h) hereof.

         "Registrable Securities" means Equity Securities (including any
Common Stock or other Voting Stock issuable upon any conversion or exercise of
any Equity Securities which are convertible securities) held by the Investor
Group which are Restricted Securities until (i) a registration statement
covering such securities has been declared effective by the SEC and such
securities have been disposed of pursuant to such effective registration
statement, (ii) such securities are sold under circumstances in which all of
the applicable conditions of Rule 144 (or any similar provisions then in
force) are met, or such securities may be sold pursuant to Rule 144(k) or
(iii) such securities are otherwise transferred, the Company has delivered a
new certificate or other evidence of ownership for such securities not bearing
a legend restricting transfer of such securities and such securities may be
resold without subsequent registration under the Securities Act.

         "Registration Expenses" means (i) all registration and filing fees,
(ii) fees and expenses of compliance with securities or blue sky laws
(including reasonable fees and disbursements of counsel in connection with
blue sky qualifications of the securities registered), (iii) printing
expenses, (iv) internal expenses of the Issuer (including, without limitation,
all salaries and expenses of its officers and employees performing legal or
accounting duties), (v) reasonable fees and disbursements of counsel for the
Company and customary fees and expenses for independent certified public
accountants retained by the Company (including the expenses of any comfort
letters or costs associated with the delivery by independent certified public
accountants of a comfort letter or comfort letters), (vi) the reasonable fees
and expenses of any special experts retained by the Company in connection with
such registration, (vii) reasonable fees and expenses of one counsel for the
Investor selected by the Investor, (viii) fees and expenses in connection with
any review of underwriting arrangements by the National Association of
Securities Dealers, Inc. including fees and expenses of any "qualified
independent underwriter" and (ix) fees and disbursements of underwriters
customarily paid by issuers or sellers of securities; but shall not include
any underwriting fees, discounts or commissions attributable to the sale of
Registrable Securities, or any out-of-pocket expenses (except as set forth
in clause (vii) above) of the Investor (or the agents who manage their
accounts) or any fees and expenses of underwriter's counsel.

         "Registration Statement" means a registration statement filed by the
Company with the SEC in accordance with the Securities Act.

         "Restricted Securities" means any Equity Securities which are
restricted securities within the meaning of Rule 144(a)(3) (or any successor
provision), promulgated under the Securities Act.

         "Roche Holder" has the meaning set forth in the recitals of this
Agreement.

         "Roche Warrants" has the meaning set forth in the recitals of this
Agreement.

         "Rule 144" and "Rule 144A" means Rule 144 and Rule 144A, as amended,
respectively (or any successor provisions), promulgated under the Securities
Act.

         "SEC" means the Securities and Exchange Commission.

         "Securities Act" means the Securities Act of 1933, as amended, and
the rules and regulations promulgated thereunder.

         "Sharing and Call Option Agreement" has the meaning set forth in the
recitals of this Agreement.

         "Special Majority Vote of the Board" means approval by a majority of
the entire Board of Directors, which majority includes a majority of all
Investor Directors and at least one Independent Director.

         "Strategic Plan" means the strategic plan of the Company and its
Subsidiaries which sets forth the strategic direction for the Company and its
Subsidiaries and their businesses (by strategic business units) for a period
of five fiscal years and which provides for, among other things: an analysis
of the business environment, business objectives and strategies, business
revenues, financial forecasts, capital plans, acquisition and divestiture
plans, if any, business segment analysis, and niche business plans.

         "Strategic Review" means a review and process that determines whether
the Strategic Plan is still valid, reviews progress to date, updates key
elements of the Strategic Plan, if deemed necessary, and proposes
modifications in objectives and strategies if deemed necessary.  Such process
shall include a review of (i) whether assumptions (including, as to market
factors, competition, regulation, patents, etc.) are still valid; (ii) whether
objectives are still realistic; (iii) whether strategies and programs are on
track; (iv) whether resource assessments are still valid; and (v) and updated
outlook (financial and nonfinancial) if material deviations are expected.

         "Subsidiary" has the same meaning as in Rule 12b-2 promulgated under
the Exchange Act, as in effect on the date hereof.

         A "Substantial Part" of any Person means, as of any date of
determination, more than 10% of the fair market value of the total assets of
such Person and its Subsidiaries as of the end of such Person's most recent
fiscal quarter ending prior to such date of determination.

         "13D Group" means any group of Persons formed for the purpose of
acquiring, holding, voting or disposing of Voting Stock which would be
required under Section 13(d) of the Exchange Act, and the rules and
regulations thereunder (as in effect, and based on legal interpretations
thereof existing, on the date hereof), to file a statement on Schedule 13D with
the SEC as a "person" within the meaning of Section 13(d)(3) of the Exchange
Act if such group beneficially owned Voting Stock representing more than 5% of
any class of Voting Stock then outstanding.

         "Total Voting Power" means the aggregate number of votes entitled to
be voted in an election of Directors of the Company by all of the outstanding
Voting Stock.

         "Voting Power" means the ability to vote or to control, directly or
indirectly, by proxy or otherwise, the voting of any Voting Stock in the
election of Directors.

         "Voting Stock" means securities having the right to vote generally in
any election of Directors of the Company.

         "Warrant Agreement" means the agreement between the Company and the
warrant agent designated therein pursuant to which, warrants, including the
Roche Warrants, are being issued as contemplated by the Merger Agreement.

         "Warrant Shares" means Common Stock issued upon exercise of the
Warrants.

         "Warrants" means the warrants issued pursuant to the Warrant
Agreement, including the Roche Warrants.

         All terms defined in this Agreement in the singular shall have a
comparable meaning when used in the plural, and vice versa.  For the purpose
of this Agreement, the phrases "to the knowledge of" or "known to" mean, with
respect to any Person, (i) known to any officer or senior manager of such
Person or any Subsidiary of such Person or (ii) could reasonably be expected
to be known to any such officer or senior manager.


                                   ARTICLE 2
                             CORPORATE GOVERNANCE

         SECTION 2.1.   Composition of the Board of Directors.  In
consideration of the Investor's interest in the Company following consummation
of the Merger, the composition of the Board of Directors shall be determined
as provided in this Article 2.  The composition of the Board of Directors and
the manner of selecting members thereof shall be as follows:

         (a) At and after the Effectiveness of this Agreement, the Board of
Directors shall be comprised of seven Directors.  The number of Directors
comprising the Board may be changed only with the approval of the Board in
accordance with Section 2.7.

         (b) Immediately upon the Effectiveness of this Agreement, the Company,
through its Board of Directors, shall cause to be duly appointed to its Board
three individuals designated prior to the Merger by the Investor to the
Company, which individuals shall include Mr. Jean-Luc Belingard, Mr. Thomas P.
Mac Mahon and Dr. James Powell (unless any such individual is unable to serve
in such capacity, in which event the Board shall duly elect as a Director one
or more substitute individuals designated by the Investor prior to the
Merger), provided that any individual so designated other than the
aforementioned Persons shall be reasonably acceptable to a majority of the
Independent Directors in office immediately prior to the Effectiveness of
this Agreement.  (Each individual designated by the Investor to be a
Director pursuant to the terms of this Agreement shall be referred to
herein as an "Investor Director" and all such Persons shall be referred to
herein as the "Investor Directors".)  For a period commencing at the
Effectiveness of this Agreement and ending at the first anniversary thereof
(the "Initial Period"), Mr.  James R.  Maher shall (unless he is unwilling
or unable to serve) be a Director and shall be elected by the Board of
Directors to serve as Chairman of the Board for such Initial Period.
During the Initial Period, Mr.  Mac Mahon shall be elected by the Board of
Directors to serve as Vice Chairman of the Board.  Following the Initial
Period (or at such earlier time as Mr.  Maher shall die, resign, retire or
be disqualified or removed from office), (i)  Mr.  Maher shall resign his
positions and not stand for reelection as a Director or as a member of any
committee of the Board or of the Management Committee (if he is then
serving on any such committee) and (ii)  Mr.  Mac Mahon shall be elected by
the Board of Directors to serve as the Chairman of the Board.  The position
of Vice Chairman will be eliminated after the Initial Period.  During the
Initial Period, the remaining three Directors shall be Independent
Directors and shall be Persons mutually acceptable to the Investor and a
majority of the members of the Board of Directors in office immediately
prior to the Effectiveness of this Agreement and may include one or more
Persons who were Independent Directors prior to the Effective Time, such
Persons to serve in each case until the expiration of the term of his
respective election (or any earlier termination, resignation or removal).

        (c) Except as otherwise provided in Section 2.1(b) with respect to the
Initial Period, at all times from and after the Effectiveness of this
Agreement, the Directors shall be nominated as follows (it being understood
that such nomination shall include any nomination of any incumbent Director
for reelection to the Board of Directors):

             (i)  the Investor shall have the right to designate three
      Investor Directors, each of whom shall be nominated for Director by the
      Nominating Committee; and

            (ii)  the Nominating Committee shall nominate the remaining
      Directors, each of whom (A) shall have an outstanding reputation for
      personal integrity and distinguished achievement in areas relevant to
      the Company (in applying the foregoing criteria the Nominating Committee
      shall be guided by the quality of the individuals currently serving as
      Directors of the Company) and (B) shall be an Independent Director.

The composition of the Board of Directors may be changed only with the
approval of the Board in accordance with Section 2.7.

         (d) If (i) at any time the Investor Group Interest is less than 30%
but at least 20%, the Investor shall have the right to designate for
nomination two Investor Directors and (ii) at any time the Investor Group
Interest shall be less than 20% but at least 10%, the Investor shall have the
right to designate for nomination one Investor Director.

         (e) If at any time when Mr. Mac Mahon (or any successor) shall be
serving as Chairman of the Board, he (or such successor) dies, resigns,
retires, is disqualified or is removed from office, such position shall be
filled by the Board in accordance with Section 2.7.

         (f) The Investor and the Nominating Committee, respectively, shall
have the right to designate any replacement for a Director designated for
nomination or nominated in accordance with this Section 2.1 by the Investor or
the Nominating Committee, respectively, upon the death, resignation,
retirement, disqualification or removal from office for other cause of such
Director.  Such replacement for any Independent Director shall also be an
Independent Director conforming to the standard set forth in Section
2.1(c)(ii).  The Board of Directors shall duly appoint as a Director each
Person so designated to fill a vacancy on the Board.

         (g) Without limiting the generality of 2.1(c) Section , in the event
that at any time after the Effectiveness of this Agreement the number of
Investor Directors on the Board of Directors differs from the number that
the Investor has the right (and desire) to designate, (i) if the number of
Investor Directors exceeds such number, the Investor shall promptly take
all appropriate action to cause to resign that number of the Investor
Directors as is required to make the remaining number of such Investor
Directors conform to the provisions of this Agreement or (ii) if the number
of Investor Directors otherwise is less than such number, the Board shall
take all necessary action to create sufficient vacancies on the Board to
permit the Investor to designate the full number of Investor Directors
which it is entitled (and desires) to designate pursuant to the provisions
of this Agreement (such action may include but need not be limited to
seeking the resignation or removal of Directors or, at the request of the
Investor and/or calling a special meeting of the shareholders of the
Company for the purpose of removing Directors to create such vacancies to
the extent permitted by applicable law).  Upon the creation of any vacancy
pursuant to the preceding sentence, the Investor shall designate the Person
to fill any such vacancy in accordance with the provisions of this
Agreement and the Board of Directors shall elect each Person so designated.

         SECTION 2.2.   Solicitation and Voting of Shares.  (a)  With respect
to each meeting of stockholders of the Company at which Directors are to be
elected, the Company shall use its best efforts to solicit from the
stockholders of the Company eligible to vote in the election of Directors
proxies in favor of the nominees selected in accordance with Section 2.1.

         (b) In any election of Directors or any meeting of the stockholders
of the Company called expressly for the removal of Directors, so long as the
Board of Directors includes (and will include after any such election or
removal) the number of Investor Directors (and the proportion of the entire
Board the Investor is entitled (and desires) to designate as nominees for
Investor Directors hereunder) contemplated by Section 2.1, the Investor
shall be, and shall use its best efforts to cause its Affiliates to be,
present for purposes of establishing a quorum, and shall vote all of their
shares of Voting Stock (i) in favor of any nominee or Director selected in
accordance with Section 2.1, (ii) in favor of removal of any Director as
contemplated by Section 2.1(g), and (iii) against the removal of any Director
designated in accordance with Section 2.1 other than (A) for cause and (B)
pursuant to Section 2.1(g).  In any other matter submitted to a vote of the
stockholders of the Company, the Investor Group may vote any or all of its
shares of Voting Stock and other Equity Securities in its sole discretion
unless such matter was approved by the Investor or a majority of the
Investor Directors in accordance with Section 2.7, in which case the
Investor shall, and shall use its best efforts to cause its Affiliates to,
vote all of their Voting Stock and any other Equity Securities in favor of
such matter.

        (c) The Investor agrees that it will, and will use its best efforts to
cause its Affiliates (other than the Company and its Subsidiaries) to, take
all action as a stockholder of the Company or as is otherwise reasonably
within its control, as necessary to effect the provisions of this Agreement.

         SECTION 2.3.   Committees of the Board of Directors.  (a)  Subject to
the general oversight and authority of the full Board of Directors, the Board
of Directors shall establish, empower, maintain and elect the members of the
following committees of the Board of Directors at all times while this
Agreement is in effect:

             (i)  an Audit Committee, comprised solely of Independent
      Directors;

            (ii)  a Nominating Committee which shall, subject to Section 2.1,
      be responsible for recommending the nomination of Directors and be
      comprised and conduct itself as follows:

                  (A) after the Effectiveness of this Agreement, the
         Nominating Committee shall be composed of two Independent Directors
         and one Investor Director;

                  (B) a majority of the Independent Directors shall designate
         the Independent Directors who shall serve on the Nominating Committee
         and a majority of the Investor Directors shall designate the Investor
         Director who shall serve on the Nominating Committee;

                  (C) a quorum of the Nominating Committee required for any
         action thereby shall require the attendance of all members thereof;
         and

                  (D) the Nominating Committee shall act by majority vote of
         the entire Nominating Committee;

           (iii)  an Employee Benefits Committee, responsible, among other
      things, for (A) recommending to the Board of Directors, for approval by
      a majority of the Board of Directors (subject to Section 2.7), (I) the
      adoption and amendment of all employee benefit plans and arrangements
      and (II) the engagement of, terms of any employment agreements and
      arrangements with and termination of employment of, all Persons who are
      or would be designated by the Company as "officers" for purposes of
      Section 16 of the Exchange Act (such Persons being referred to herein as
      "Section 16 Officers") and (B) granting under and administering the
      Company's stock option incentive plans with respect to the participation
      therein of Section 16 Officers, which committee shall be comprised
      solely of Investor Director(s) and Independent Directors (with
      Independent Directors constituting a majority), who constitute
      "disinterested persons" (as such term is defined in Rule 16b-3(c) under
      the Exchange Act), and the Chairman of which committee shall, subject to
      Section 2.1(b), be Mr.  Jean-Luc Belingard until his successor is
      duly elected; and

            (iv)  such other committees as the Board of Directors deems
      necessary or desirable to establish, empower and maintain, provided that
      such committees are approved by a Special Majority Vote of the Board and
      are established in compliance with the terms of this Agreement.

         (b) Except as otherwise provided in this Agreement or as agreed by a
majority of the Independent Directors and the Investor Directors, the number
of Investor Directors serving on each committee of the Board of Directors
shall be the same proportion of the total membership of such committee as the
number of Investor Directors is of the entire Board of Directors, with a
minimum of one member so long as the Investor is entitled hereunder to
designate one Investor  Director.  Any members of any committee which are
Investor Directors shall, in the event of any vacancy in such membership, be
replaced by a majority of the Investor Directors.

         (c) If the Investor Group Interest shall be less than 30% but more
than 20%, the number of Investor Directors serving on each committee of the
Board of Directors (other than the Audit Committee) shall be (x) two, if such
committee shall have five or more total members, or (y) one, in all other
cases.  If the Investor Group Interest shall be less than 20% but more than
10%, the number of Investor Directors serving on each committee of the Board
of Directors (other than the Audit Committee) shall be one.  Any members of
any committee which are Investor Directors shall, in the event of any vacancy
in such membership, be replaced by a majority of the Investor Directors.

         SECTION 2.4.   Management Committee.  (a)  Immediately after the
Effectiveness of this Agreement, the Company shall establish a Management
Committee,  which shall be comprised and conduct itself as follows:

             (i)  the Management Committee shall be comprised of (A) the
      President and Chief Executive Officer of the Company, who shall serve as
      the Chairman of the Management Committee, (B) the Chief Operating
      Officer of the Company, (C) the Chief Financial Officer of the Company,
      (D) the Chief Administrative Officer of the Company, (E) the General
      Counsel for the Company, (F) the Executive Vice President, Sales and
      Marketing of the Company, (G) the Executive Vice President, Human
      Resources of the Company, (H) the Chairman of the Board and (I) the Vice
      Chairman of the Board, if any, and may include other Board members or
      executive officers of the Company, in each case in accordance with
      Section 2.7; and

            (ii)  the Management Committee shall act by a consensus of the
      members thereof, provided that such consensus includes the approval of
      the Chairman of the Management Committee.

         (b) The Management Committee shall have the following
responsibilities, authority and duties, and such other responsibilities,
authority and duties as the Board (acting by Special Majority Vote of the
Board) may from time to time grant, subject to the other provisions of this
Agreement, the Certificate of Incorporation and the By-laws:

             (i)  review and approval of the Strategic Plan prior to
      consideration and approval by the Board in accordance with Section 2.7;

            (ii)  review and approval of the Annual Operating Plan and annual
      operating budget of the Company prior to consideration and approval of
      the Board in accordance with Section 2.7; and

           (iii)  overseeing the implementation of the Initial Synergy Plan,
      including the attainment of the synergy goals of such Plan and the
      integration of the businesses of RBL and its Subsidiaries (prior to the
      Merger) and the Company.

         (c) Meetings of the Management Committee shall be conducted at least
six times per year, or more often as determined by the Chairman of the
Management Committee, in his discretion.

         SECTION 2.5.   Notice for Board and Committee Meetings.  (a)  No
action by the Board of Directors or any committee of the Board of Directors
shall be valid unless taken at a meeting for which seven days prior notice has
been duly given or waived by the Directors or the members of such committee,
as the case may be.  Such notice shall include a description of the general
nature of the business to be transacted at the meeting, and no other business
may be transacted at such meeting unless all Directors or members of the
committee as the case may be, are present and consent to the consideration of
such other business.

         (b) In the case of committee meetings, any committee member unable to
participate in Person at any meeting shall be given the opportunity to
participate by telephone.

         (c) Each of the committees established by the Board of Directors
pursuant to Section 2.3 and the Management Committee established pursuant to
Section 2.4 shall establish and adopt such other rules and procedures for its
operation and governance (consistent with the terms of this Agreement and the
Company's Certificate of Incorporation and By-laws) as it shall determine
appropriate and may seek such consultation and advice as to matters within its
purview as it shall require.

         SECTION 2.6.   Vacancies on Board Committees and the Management
Committee.    In the event that any Investor Director or Independent Director
ceases to serve on any committee of the Board of Directors or on the
Management Committee, the majority of the Investor Directors and the majority
of the Independent Directors shall designate, respectively, a replacement
member.  If after a reasonable time, no successor to such Director is
designated in accordance with the terms hereof to serve on such committee, the
number of members of such committee may be reduced if such reduction does not
(and no such reduction is intended to) result in a change of the relative
authorities within such committee among the Investor Directors (taken as a
group) and the Independent Directors (taken as a group).

         SECTION 2.7.   Approval Required for Certain Actions.  (a)  So long
as the Investor Group Interest shall be 30% or more, no action by the Company
or any Subsidiary (including but not limited to any action by their respective
boards of directors or any committee thereof) shall be taken with respect to
any of the following matters without the approval of the Board which approval
shall be by a Special Majority Vote of the Board:

             (i)  the appointment of any of the Chairman of the Board, Chief
      Executive Officer, President, Secretary, Treasurer, General Counsel,
      Chief Financial Officer, Chief Operating Officer or Chief Administrative
      Officer or other executive officer in any similar capacity of the
      Company or any Subsidiary thereof (and the election of any directors to
      the board of directors of any such Subsidiary);

            (ii)  the approval of each Strategic Plan and each Annual
      Operating Plan developed subsequent to the Effectiveness of this
      Agreement and any material amendment to, modification of, or deviation
      from, the Initial Synergy Plan or any other Strategic Plan;

           (iii)  any merger or consolidation of the Company or any of its
      Subsidiaries with or into any Person other than the Company or any of
      its Subsidiaries;

            (iv)  any amendment to the Certificate of Incorporation or By-laws
      or any adoption of or amendment to the certificate of incorporation or
      by-laws of any Subsidiary of the Company;

             (v)  any acquisition of assets, business, operations or
      securities by the Company or any Subsidiary thereof by merger or
      otherwise (whether in one transaction or a series of related
      transactions) which assets, business, operations or securities would
      constitute a Substantial Part of the Company measured prior to such
      transaction;

            (vi)  any sale, asset exchange, lease, exchange, mortgage, pledge,
      transfer or other disposition by merger or otherwise by the Company or
      any of its Subsidiaries (in one transaction or a series of related
      transactions) of any Subsidiary of the Company or assets of the Company
      or any Subsidiary thereof which constitutes a Substantial Part of the
      Company;

           (vii)  the settling of any litigation, investigation or proceeding
      involving (A) any governmental authority or (B) any amount proposed to
      be paid in settlement is in excess of $5,000,000;

          (viii)  any material transaction between (x) the Company or any of
      its Subsidiaries, on the one hand, and (y) any stockholder or Affiliate
      of the Company (other than any Subsidiary of the Company and other than
      the Investor and its Affiliates), on the other hand (other than as
      specifically contemplated by the Sharing and Call Option Agreement);

            (ix)  the issuance of any security of the Company or any
      Subsidiaries of the Company (other than as specifically contemplated by
      the Merger Agreement or the Warrant Agreement or pursuant to the
      exercise of existing employee stock options);

             (x)  capital expenditures individually in excess of $1,000,000 or
      in the aggregate in excess of $50,000,000 per annum or which represent
      in the aggregate 110% or more of the total amount provided for in the
      Annual Operating Plan for such year;

            (xi)  a reclassification, combination, split, subdivision or
      redemption, purchase or other acquisition, directly or indirectly, of
      any debt or equity securities or other capital stock of the Company
      except as provided in the Merger Agreement and the Warrant Agreement;

           (xii)  any change in the size or composition of the Board of
      Directors or any committee thereof or of the Management Committee or the
      establishment of a new committee of the Board;

          (xiii)  any incurrence, assumption or issuance by the Company or any
      of its Subsidiaries of Indebtedness other than (x) Indebtedness existing
      immediately after the Effective Time) and any refinancings thereof and
      (y) other Indebtedness in an aggregate principal amount at any one time
      outstanding not to exceed $25,000,000;

           (xiv)  the declaration of any dividend or the making of any other
      distribution with respect to, or the redemption, repurchase or other
      acquisition of, any class of securities of the Company or any of its
      Subsidiaries, except as expressly otherwise provided in the Merger
      Agreement or the Warrant Agreement;

            (xv)  the proposal or entry into by the Company or any of its
      Subsidiaries of any Discriminatory Transaction;

           (xvi)  any relocation of the headquarters of the Company;

          (xvii)  the determination of compensation, benefits, perquisites and
      other incentives for executive officers (other than officers whose total
      compensation including employee stock options and similar incentives
      does not exceed $150,000 annually) and the approval or amendment of any
      plans or contracts in connection therewith;

         (xviii)  the adoption or implementation of any takeover defense
      measures, including the institution, amendment or redemption by the
      Company or any of its Subsidiaries of any stockholder rights plan or
      similar plan or device, or any change of control matters (including
      change of control provisions in agreements to which the Company or any
      Subsidiary thereof is a party);

           (xix)  any transaction involving or any action by the Company or
      any Subsidiary (A) leading to a circumstance in which any Person or 13D
      Group (other than the Investor and/or its Affiliates) shall beneficially
      own Equity Securities representing a percentage of Total Voting Power,
      or any equity interest in the Company greater than 15% or (B) requiring
      the approval of holders of a majority of the Voting Stock or Equity
      Securities;

            (xx)  any change in the fiscal year or the accounting or tax
      principles, or policies with respect to the financial statements,
      records or affairs of the Company or any Subsidiary, except as required
      by GAAP or by law; or

           (xxi)  the dissolution of the Company or any of its Subsidiaries
      thereof; the adoption of a plan of liquidation of the Company or any
      Subsidiaries; or any action by the Company or any of its Subsidiaries to
      commence any suit, case, proceeding or other action (A) under any
      existing or future law of any jurisdiction relating to bankruptcy,
      insolvency, reorganization or relief of debtors seeking to have an order
      for relief entered with respect to the Company or any of its
      Subsidiaries, or seeking to adjudicate the Company or any of its
      Subsidiaries a bankrupt or insolvent, or seeking reorganization,
      arrangement, adjustment, winding up, liquidation, dissolution,
      composition or other relief with respect to the Company or any of its
      Subsidiaries or (B) seeking appointment of a receiver, trustee,
      custodian or other similar official for the Company or any of its
      Subsidiaries thereof, or for all or any Substantial Part of the Company
      or any of its Subsidiaries thereof, or making a general assignment for
      the benefit of the creditors of the Company or any of its Subsidiaries
      thereof.

         SECTION 2.8.   Enforcement of this Agreement.  A majority of the
Independent Directors shall have full and complete authority on behalf of the
Company to enforce the terms of this Agreement.

         SECTION 2.9.   Certificate of Incorporation and By-laws.  The Company
and the Investor shall take or cause to be taken all lawful action necessary
to ensure at all times that the Company's Certificate of Incorporation and
By-laws are not at any time inconsistent with the provisions of this
Agreement.  Not later than the Effectiveness of this Agreement, the Board of
Directors shall amend the Company's By-laws to reflect the provisions of this
Article 2.  At the Investor's request the Board of Directors shall adopt (and
if necessary submit and recommend for approval by stockholders) such other
amendments to the Company's Certificate of Incorporation or By-laws as may be
reasonably necessary to implement the provisions of this Agreement.

         SECTION 2.10.  Governance of Company Subsidiaries.  The governance of
each Subsidiary of the Company shall be conducted in a manner consistent with
the governance of the Company as provided in this Agreement.  In particular, a
Subsidiary shall not take or agree to take any action which, if taken by the
Company would require approval of the Investor or a Special Majority Vote of
the Board pursuant to the terms of this Agreement, unless such action is first
approved by the Investor or a Special Majority Vote of the Board, as the case
may be.  The Board of Directors shall select the Persons who from time to time
shall be elected as the directors of the Company's Subsidiaries subject to
Section 2.7.

         SECTION 2.11.  Strategic Planning Process.  (a)  The parties have
cooperated in preparing the Initial Synergy Plan.  The President and Chief
Executive Officer of the Company shall, on an annual basis, cause to be
prepared and proposed to the Management Committee, a Strategic Plan covering a
five-year period beginning with the period 1997-2001.  Each year the Strategic
Plan shall be proposed to the Management Committee not later than May 1st.  In
connection with the preparation of each Strategic Plan, the President and
Chief Executive Officer shall confer on a reasonable basis with the
Management Committee and the Board of Directors.

         (b) From time to time, at the request of the President and Chief
Executive Officer, and at least once a year during the fourth and fifth fiscal
years of a Strategic Plan and prior to the budgeting process for the following
year, the President and Chief Executive Officer will hold a Strategic Review
with the Management Committee of the Company and, in light of such review, the
Management Committee of the Company may propose to the Board of Directors
revisions or updates to the Strategic Plan in light of changed circumstance.

         (c) Any proposed Strategic Plan or any revisions or updates to the
current Strategic Plan will require approval of the Board of Directors,
subject to Section 2.7.

         SECTION 2.12.  Operating Planning Processes.  The President and Chief
Executive Officer will be responsible for the preparation, on an annual basis,
of a proposed Annual Operating Plan for each fiscal year which shall be
consistent with the then applicable Initial Synergy Plan or Strategic Plan, as
the case may be, and shall be submitted to the Management Committee not later
than two months before the beginning of such fiscal year.  The financial and
operating performance goals in each Annual Operating Plan shall be determined
by reference to the applicable Strategic Plan, taking into account such
factors as the President and Chief Executive Officer determines are
appropriate.  Any proposed Annual Operating Plan will require approval of the
Board of Directors, subject to Section 2.7.

         SECTION 2.13.  Headquarters of the Company.  As of the Effective
Time, the headquarters of the Company shall be the location designated by the
Management Committee in accordance with Section 2.4(a).


                                   ARTICLE 3
                             ANTI-DILUTIVE RIGHTS

         SECTION 3.1.   Anti-dilutive Rights.  (a)  Except as provided in
Section 3.1(c) below, the Company shall not issue, sell or transfer any Equity
Securities to any Person unless the Investor is offered in writing the right
to purchase, at the same price and on the same terms proposed to be issued and
sold, an amount of such Equity Securities (the "Maintenance Securities") as is
necessary for the Investor Group to maintain the Investor Group Interest as it
existed immediately prior to such issuance (the "Anti-dilutive Rights").  The
Investor shall have the right, during the period specified in Section 3.1(b)
to accept the offer for any or all of the Maintenance Securities.

         (b) If the Investor does not deliver to the Company written notice of
acceptance of any offer made pursuant to Section 3.1(a) within 20 Business
Days after the Investor's receipt of such offer, the Investor shall be
deemed to have waived its right to purchase all or any part of its
Maintenance Securities as set forth in such offer but the Investor shall
retain its rights under this Article with respect to future offers.

         (c) The Anti-dilutive Rights set forth above shall not apply to (i)
the grant or exercise of options to purchase Common Stock or the issuance of
shares of Common Stock to employees of the Company or any of its Subsidiaries
(other than employees who are also employees of a stockholder, their
Affiliates or any subsidiary of a stockholder) or otherwise pursuant to a
stock option or similar plan in existence on the date hereof or otherwise
adopted by the Board of Directors hereafter, (ii) the issuance of Warrant
Shares, or of shares of Common Stock issuable upon exercise of any option,
warrant, convertible security or other rights to purchase or subscribe for
Common Stock which, in each case, had been issued in compliance with
Section 3.1(a) or Section 3.1(c)(i), (iii) securities issued pursuant to
any stock split, stock dividend or other similar stock recapitalization, or
(iv) shares of Common Stock issued pursuant to any Public Offering,
provided that the action referred to in clause (i), (iii) or (iv) of this
Section 3.1(c) as the case may be, shall have been approved (to the extent
required) in accordance with the provisions of this Agreement.

         (d) A closing for the purchase of Maintenance Securities pursuant to
this Section 3.1(d) shall occur on the later of (i) the date on which such
public or private issuance occurs and (ii) such date as may be agreed to by
the Investor and the Company, at a time and place specified by the Investor
in a notice provided to the Company at least ten (10) days prior to such
specified closing date.  In connection with such closing, the Company and
the Investor shall provide such customary closing certificates and opinions
as the Investor or the Company, as appropriate, shall reasonably request.


                                   ARTICLE 4
                 ACQUISITIONS OF ADDITIONAL EQUITY SECURITIES

         SECTION 4.1.   Limitation on Additional Acquisitions.  (a)  From the
Effectiveness of this Agreement until the first anniversary thereof, the
Investor shall not, and shall use its best efforts to cause each member of the
Investor Group not to, directly or indirectly, purchase or otherwise acquire
any Equity Securities of the Company if, after giving effect thereto, the
Investor Group Interest would exceed 49.99%.  Notwithstanding the foregoing,
the Investor Group or one or more members thereof may acquire, directly or
indirectly, by purchase or otherwise, Equity Securities resulting in the
Investor Group Interest exceeding such limitation in the event (i) any Person
or Group makes an Acquisition Proposal (as defined in the Merger Agreement);
(ii) Mafco or any Affiliate thereof shall after the Effective Time acquire
Equity Securities representing 1% or more of the Total Voting Power; (iii) any
Person or Group acquires beneficial ownership of Equity Securities
representing 5% or more of Total Voting Power (10% or more in the case of
beneficial ownership permitted to be reported on Schedule 13G under the
Exchange Act); or (iv) there shall have been a material adverse change in the
business, financial condition or operations of the Company for, or which would
reasonably be expected to continue for, a sustained period and the Investor
shall have determined in good faith that the acquisition of additional Equity
Securities is reasonably necessary to protect its investment in the Company.

         (b) From the first anniversary of the Effectiveness of this Agreement
until the third anniversary of the Effectiveness of this Agreement, the
Investor shall not and shall use its best efforts to cause each member of the
Investor Group not to, directly or indirectly, purchase or otherwise acquire,
or propose or offer to purchase or acquire, any Equity Securities of the
Company, whether by tender offer, Market Purchase, privately negotiated
purchase, merger or otherwise, except that the Investor Group may acquire
Equity Securities to the extent that after giving effect thereto, the Investor
Group Interest would not exceed 75%.

        (c) Anything to the contrary notwithstanding in Section 4.1(a) or (b),
the Investor Group may acquire Equity Securities, notwithstanding the fact
that, after giving effect thereto, the Investor Group Interest would exceed
75%, if the Investor Group (or a member or Affiliate thereof, as the case may
be) offers, prior to consummating such purchase, to purchase all outstanding
Equity Securities and holders of Equity Securities representing more than 50%
of the outstanding Equity Securities (excluding any Equity Securities held by
the Investor Group) accept such offer and the Investor Group ( or a member or
Affiliate thereof, as the case may be) consummates such purchase.


                                   ARTICLE 5
                        TRANSFERS OF EQUITY SECURITIES

         SECTION 5.1.   Transfers of Equity Securities.  The Investor agrees
not to sell or otherwise transfer any Equity Securities except pursuant to (x)
Section 9.5 hereof and (y) (i) a Public Offering in accordance with Article 6,
(ii) Rule 144 or Rule 144A, or (iii) any other transaction in compliance with
the Securities Act, state securities laws and other applicable laws.


                                   ARTICLE 6
                              REGISTRATION RIGHTS

         SECTION 6.1.   Demand Registration. (a)  From and after the
Effectiveness of this Agreement, the Investor may make a written request to
the Company for registration under the Securities Act of Registrable
Securities subject to the conditions set forth in Section 6.2 and
Section 6.3 hereof (a "Demand Registration").  Such request will specify
the number of shares of or warrants constituting Registrable Securities
proposed to be sold and will also specify the intended method of
disposition thereof.  Following the Investor's request, the Company will
use its best efforts to effect, as expeditiously as possible, the
registration under the Securities Act of the Registrable Securities which
the Company has been so requested to register by the Investor so as to
permit the disposition (in accordance with the intended methods thereof as
aforesaid) of such Registrable Securities.

         (b) If the Investor so elects, the offering of such Registrable
Securities pursuant to such Demand Registration shall be in the form of Public
Offering.  The Investor shall select the managing underwriters and any
additional investment bankers and managers to be used in connection with a
Demand Registration pursuant to a Public Offering, provided that such managing
underwriters shall be of national standing and any additional investment
bankers or managers must be reasonably satisfactory to the Company.

         SECTION 6.2.   Conditions to Demand Registrations.  The obligations
of the Company to take the actions contemplated by Section 6.1 with respect
to an offering of Registrable Securities shall be subject to the following
conditions:

         (a) the Registrable Securities requested to be registered shall
(unless reduced pursuant to Section 6.5) constitute at least 2% of the
equivalent outstanding Equity Securities or at least 5% of the Registrable
Securities at such time, whichever amount is smaller;

         (b) there shall not have been consummated more than one offering
pursuant to a Demand Registration within the preceding 12 month period;

         (c)(x) if the Investor Group Interest shall be less than 30% but more
than 20%, no more than three other Demand Registrations shall have been
effected after the date on which the Investor Group Interest was reduced to
less than 30%, (y) if the Investor Group Interest shall be less than 20% but
more than 10%, no more than two other Demand Registrations shall have been
effected after the date on which the Investor Group Interest was reduced to
less than 20% and (z) if the Investor Group Interest shall be less than 10%,
no more than one other Demand Registration shall have been effected after the
date on which the Investor Group Interest was reduced to less than 10%;

         (d) the Investor shall conform to all applicable requirements of the
Securities Act and the Exchange Act with respect to the offering and sale of
securities and shall advise each underwriter, broker or dealer through which
any of the Registrable Securities are offered that the Registrable Securities
are part of a distribution that is subject to the prospectus delivery
requirements of the Securities Act; and

         (e) the Investor shall use all reasonable efforts to effect as wide a
distribution of such Registrable Securities as is reasonably practicable, and
in no event shall any sale of Registrable Securities be made knowingly to any
Person who beneficially owns 5% or more of the Total Voting Power (including
such Person's Affiliates and any Person which to the knowledge of the Investor
is, or who, after giving effect to such sale, would be part of any 13D Group).

         SECTION 6.3.   Additional Conditions to Demand Offerings.
Notwithstanding the provisions of Sections 6.1 and 6.2, the Company's
obligations pursuant to Section 6.1 shall be suspended if (a) the fulfillment
of such obligations would require the Company to make a disclosure that
would, in the reasonable good faith judgment of the Company's Board of
Directors, be materially detrimental to the Company and premature, (b) the
Company has filed a Registration Statement with respect to Equity
Securities to be distributed in a Public Offering and it is advised by its
lead or managing underwriter that an offering by the Investor of the
Registrable Securities would materially adversely affect the distribution
of such Equity Securities or (c) the fulfillment of such obligations would
require the Company to prepare audited financial statements not required to
be prepared for the Company to comply with its obligations under the
Exchange Act as of any date not coincident with the last day of any fiscal
year of the Company.  Such obligations of the Company shall be reinstated
(x) in the case of clause (a) above, upon the making of such disclosure by
the Company (or, if earlier, when such disclosure would either no longer be
necessary for the fulfillment of such obligations or no longer be
detrimental), (y) in the case of clause (b) above, upon the conclusion of
any period during which the Company would not, pursuant to the terms of its
underwriting arrangements, be permitted to sell securities of the Company
for its own account and (z) in the case of clause (c) above, as soon as it
would no longer be necessary to prepare such financial statements to comply
with the Exchange Act.

         SECTION 6.4.   Piggyback Registration.  If the Company proposes to
file a Registration Statement under the Securities Act with respect to an
offering of any securities of the Company (a) for the Company's own account
(other than a Registration Statement on Form S-4 or S-8 (or any substitute
form that may be adopted by the SEC) or (b) the account of any Other Holder
(other than Mafco or any of its Affiliates), then the Company shall give
written notice of such proposed filing to the Investor as soon as practicable
(but in no event less than 20 Business Days before the anticipated filing
date), and such notice shall offer the Investor the opportunity to register
such number of shares of (or Warrants constituting) Registrable Securities as
the Investor may request on the same terms and conditions as those applicable
to the Securities of the Company or of the Other Holders in the offering (a
"Piggyback Registration").  Upon the written request of the Investor made
within ten days after the receipt of notice from the Company (which request
shall specify the amount and types of Registrable Securities intended to be
issued or disposed of), the Company will use its best efforts to effect the
registration under the Securities Act of all such Registrable Securities which
the Company has been so requested to register by such Investor, to the extent
requisite to permit the disposition of such Registrable Securities to be so
registered, provided that (i) if such registration involves a Public Offering,
the Investor must sell its Registrable Securities to the underwriters on the
same terms and conditions as apply to the Company and (ii) if, at any time
after giving written notice of its intention to register any securities of the
Company pursuant to this Section 6.4 and prior to the effective date of the
Registration Statement filed in connection with such registration, the Company
shall determine for any reason not to register such securities, the Company
shall give written notice to the Investor and, thereupon, shall be relieved of
its obligation to register any Registrable Securities in connection with such
registration (without prejudice, however, to rights of the Investor under
Section 6.1 hereof).  No registration effected under this Section 6.4 shall
relieve the Company of its obligations to effect any Demand Registration to
the extent required by Section 6.1 hereof.

         SECTION 6.5.   Reduction of Offering.  Notwithstanding anything
contained herein, if the managing underwriter of an offering described in
Section 6.1 or Section 6.4 delivers a written opinion to the Company
advising that (a) the size of the offering that the Investor, the Company
and any Other Holders intend to make or (b) the combination of securities
that the Investor, the Company and such Other Holders intend to include in
such offering are such that the success of the offering would be materially
and adversely affected, then (A) if the size of the offering is the basis
of such underwriter's opinion, the amount of Registrable Securities to be
offered for the account of the Investor shall be reduced to the extent
necessary to reduce the total amount of securities to be included in such
offering to the amount recommended by such managing underwriter, provided
that (x) in the case of a Demand Registration, the amount of Registrable
Securities to be offered for the account of the Investor shall be reduced
only after the amount of securities to be offered for the account of the
Company and such Other Holders has been reduced to zero, and (y) in the
case of a Piggyback Registration, if securities are being offered for the
account of Other Holders, then the proportion by which the amount of such
Registrable Securities intended to be offered for the account of the
Investor is reduced shall not exceed the proportion by which the amount of
such securities intended to be offered for the account of such Other
Holders is reduced; and (B) if the combination of securities to be offered
is the basis of such underwriter's opinion, (x) the Registrable Securities
to be included in such offering shall be reduced as described in clause (A)
above (subject to the proviso in clause (A)), and (y) in the case of a
Piggyback Registration, if the actions described in sub-clause (x) of this
clause (B) would, in the judgment of the managing underwriter, be
insufficient substantially to eliminate the adverse effect that inclusion
of the Registrable Securities requested to be included would have on such
offering, such Registrable Securities will be excluded from such offering.

         SECTION 6.6.   Filings; Registration Procedures.  Whenever the
Investor requests that any Registrable Securities be registered pursuant to
Section 6.1 hereof, the Company will use its reasonable efforts to effect the
registration of such Registrable Securities as promptly as is practicable, and
in connection with any such request:

         (a) The Company will as expeditiously as possible prepare and file
with the SEC a Registration Statement on any form for which the Company then
qualifies and which counsel for the Company shall deem appropriate and
available for the sale of the Registrable Securities to be registered
thereunder in accordance with the intended method of distribution thereof.  A
registration will not count as a Demand Registration until a Registration
Statement shall have become effective under the Securities Act and remained
effective for at least 270 days (or such shorter period in which all
Registrable Securities of the Investor included in such registration have
actually been sold thereunder), provided that, if after any Registration
Statement requested pursuant to Section 6.1 becomes effective, such
Registration Statement is interfered with by any stop order, injunction or
other order or requirement of the Commission or other governmental agency
or court solely due to the actions or omissions to act of the Company, such
registration shall not be considered a Demand Registration.

         (b) The Company will, if requested, prior to filing such Registration
Statement or any amendment or supplement thereto, furnish to the Investor and
each applicable managing underwriter, if any, copies thereof, and thereafter
furnish to the Investor and each such underwriter such number of copies of
such Registration Statement, amendment and supplement thereto (in each case
including all exhibits thereto and documents incorporated by reference
therein) and the prospectus included in such Registration Statement (including
each preliminary prospectus) as the Investor or each such underwriter may
reasonably request in order to facilitate the sale of the Registrable
Securities.

         (c) The Company will use all reasonable efforts to cause the
Registerable Securities to be registered with or approved by such other
governmental agencies or authorities as may be necessary by virtue of the
business and operations of the Company to enable the Investor to consummate
the disposition of such Registrable Securities.

         (d) After the filing of the Registration Statement, the Company will
(i) prepare and file with the SEC such amendments and post-effective
amendments to the registration statement as may be necessary to keep such
registration statement effective for a reasonable period not to exceed 270
days; cause the related prospectus to be supplemented by any required
prospectus supplement, and as so supplemented to be filed pursuant to Rule 424
under the Securities Act, and (ii) comply with the provisions of the
Securities Act with respect to the disposition of all securities covered by
such registration statement during the applicable period in accordance with
the intended methods of disposition by the sellers thereof set forth in such
registration statement or supplement to such prospectus and promptly notify the
Investor of any stop order issued or, to the Company's knowledge, threatened
to be issued by the SEC and take all reasonable actions required to prevent
the entry of such stop order or to remove it if entered.

         (e) The Company will endeavor to qualify the Registrable Securities
for offer and sale under such other securities or blue sky laws of such
jurisdictions in the United States as the Investor reasonably requests,
provided that the Company will not be required to (i) qualify generally to do
business in any jurisdiction where it would not otherwise be required to
qualify but for this Section 6.6(e), (ii) subject itself to taxation in any
such jurisdiction or (iii) consent to general service of process in any
such jurisdiction.

         (f) The Company will as promptly as is practicable notify the
Investor, at any time when a prospectus relating to the sale of the
Registrable Securities is required by law to be delivered in connection with
sales by an underwriter or dealer, of the occurrence of any event requiring
the preparation of a supplement or amendment to such prospectus so that, as
thereafter delivered to the purchasers of such Registrable Securities, such
prospectus will not contain an untrue statement of a material fact or omit to
state any material fact required to be stated therein or necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, and promptly make available to the Investor and to the
underwriters, if any such supplement or amendment.  The Investor agrees that,
upon receipt of any notice from the Company of the occurrence of any event of
the kind described in the preceding sentence, the Investor will forthwith
discontinue the offer and sale of Registrable Securities pursuant to the
Registration Statement covering such Registrable Securities until receipt by
the Investor and the underwriters, if any, of the copies of such supplemented
or amended prospectus and, if so directed by the Company, the Investor will
deliver to the Company all copies, other than permanent file copies then in
the Investor's possession, of the most recent prospectus covering such
Registrable Securities at the time of receipt of such notice.  In the event
the Company shall give such notice, the Company shall extend the period during
which such Registration Statement shall be maintained effective as provided in
Section 6.6(a) hereof by the number of days during the period from and
including the date of the giving of such notice to the date when the
Company shall make available to the Investor such supplemented or amended
prospectus.

         (g) The Company will enter into customary agreements (including an
underwriting agreement in customary form) and take such other actions as are
reasonably required in order to expedite or facilitate the sale of the
Registrable Securities covered by a Registration Statement in accordance
herewith.

         (h) The Company shall make available for inspection by the Investor,
any underwriter participating in any disposition pursuant to such
registration, and any attorney, accountant or other agent retained by the
Investor or any such underwriter (collectively, the "Inspectors"), all
financial and other records, pertinent corporate documents and properties of
the Company (collectively, the "Records") as shall be reasonably necessary to
enable them to exercise their due diligence responsibility, and cause the
officers, directors and employees of the Company to supply all information
reasonably requested by any such Inspector in connection with such
registration, provided that (i) records and information obtained hereunder
shall be used by such Persons only to exercise their due diligence
responsibility and (ii) records or information which the Company determines,
in good faith, to be confidential shall not be disclosed by the Inspectors
unless (x) the disclosure of such Records or information is necessary to avoid
or correct a misstatement or omission in the Registration Statement or (y) the
release of such Records or information is ordered pursuant to a subpoena or
other order from a court or governmental authority of competent jurisdiction.
The Investor shall use reasonable efforts, prior to any such disclosure, to
inform the Company that such disclosure is necessary to avoid or correct a
misstatement or omission in the Registration Statement.  The Investor further
agrees that it will, upon learning that disclosure of such Records or
information is sought in a court or governmental authority, give notice to the
Company and allow the Company, at the expense of the Company, to undertake
appropriate action to prevent disclosure of the Records or information deemed
confidential; the Investor agrees that information obtained by it as a result
of such inspections shall be deemed confidential and shall not be used by it
as the basis for any market transactions in the securities of the Company or
its Affiliates unless and until such information is made generally available
to the public.

         (i) The Company will furnish to the Investor and to each underwriter,
if any, a signed counterpart, addressed to the Investor or such underwriter,
if any, of (i) an opinion or opinions of counsel to the Company and (ii) a
comfort letter or comfort letters from the Company's independent public
accountants, each in customary form and covering such matters of the type
customarily covered by opinions or comfort letters, as the case may be, as the
Investor or the managing underwriter reasonably requests.

         (j) The Company will make generally available to its security holders,
as soon as reasonably practicable, an earnings statement covering a period of
12 months, beginning within three months after the effective date of the
Registration Statement, which earnings statement shall satisfy the provisions
of Section 11(a) of the Securities Act.

         (k) The Company will use its reasonable efforts to cause all such
Registrable Securities to be listed on each securities exchange on which
similar securities issued by the Company are then listed.

         (l) The Company may require the Investor promptly to furnish in
writing to the Company such information regarding the Investor, the plan of
distribution of the Registrable Securities and other information as the
Company may from time to time reasonably request or as may be legally required
in connection with such registration.

         SECTION 6.7.   Registration Expenses.  In connection with any Demand
Registration or any Piggyback Registration, the Company shall pay the
Registration Expenses.

         SECTION 6.8.   Indemnification by the Company.  The Company agrees to
indemnify, to the fullest extent permitted by law, the Investor and directors,
officers and controlling Persons of the Investor (within the meaning of either
Section 15 of the Securities Act or Section 20 of the Exchange Act) against
any and all losses, claims, damages, liabilities and expenses (including
attorneys' fees) caused by any untrue or alleged untrue statement of material
fact contained in any Registration Statement or prospectus (each as amended
and or supplemented, if the Company shall have furnished any amendments or
supplements thereto) or preliminary prospectus relating to the Registrable
Securities, or any omission or alleged omission to state therein a material
fact required to be stated therein or necessary to make the statements therein
(in the case of a prospectus, in the light of the circumstances under which
they were made) not misleading, provided that the Company shall not be
required to indemnify the Investor or the officers, directors or controlling
Persons of the Investor for any losses, claims, damages, liabilities or
expenses resulting from any such untrue statement or omission if such untrue
statement or omission is made in reliance on and conformity with any
information with respect to the Investor furnished to the Company by the
Investor expressly for use therein, and further provided that the foregoing
indemnity agreement with respect to any preliminary prospectus shall not inure
to the benefit of the Investor if a copy of the most current at the time of
the delivery of the Registrable Securities prospectus was not provided to
purchaser and such current prospectus would have cured the defect giving rise
to such loss, claim, damage or liability.  In connection with an underwritten
offering, the Company will indemnify any underwriter thereof, the officers and
directors of such underwriter, and each Person who controls such underwriter
(within the meaning of either Section 15 of the Securities Act or Section 20
of the Exchange Act) to the same extent as provided above with respect to the
indemnification of the Investor, provided that such underwriter agrees to
indemnify the Company to the same extent as provided below with respect to the
indemnification of the Company by the Investor.

         SECTION 6.9.   Indemnification by the Investor.  In connection with
any registration in which the Investor is participating, the Investor will
furnish to the Company in writing such information and affidavits with respect
to the Investor as the Company reasonably requests for use in connection with
any such registration, prospectus, or preliminary prospectus and agrees to
indemnify the Company, its directors, its officers who sign the Registration
Statement and each Person, if any, who controls the Company (within the
meaning of either Section 15 of the Securities Act or of Section 20 of the
Exchange Act) to the same extent as the foregoing indemnity from the Company
to the Investor, but only with respect to information relating to the Investor
furnished to the Company in writing by the Investor expressly for use in the
Registration Statement, the prospectus, any amendment or supplement thereto,
or any preliminary prospectus.

         SECTION 6.10.  Conduct of Indemnification Proceedings.  In case any
proceeding (including any governmental investigation) shall be instituted
involving any Person in respect of which indemnity may be sought pursuant to
Section 6.8 or Section 6.9, such Person (the "Indemnified Party") shall
promptly notify the Person against whom such indemnity may be sought (the
"Indemnifying Party") in writing and the Indemnifying Party, upon request
of the Indemnified Party, shall retain counsel reasonably satisfactory to
the Indemnified Party to represent the Indemnified Party and any others the
Indemnifying Party may designate in such proceeding and shall pay the fees
and disbursements of such counsel related to such proceeding.  In any such
proceeding, any Indemnified Party shall have the right to retain its own
counsel, but the fees and expenses of such counsel shall be at the expense
of such Indemnified Party unless (i) the Indemnifying Party and the
Indemnified Party shall have mutually agreed to the retention of such
counsel or (ii) the named parties to any such proceeding (including any
impleaded parties) include both the Indemnifying Party and the Indemnified
Party and the Indemnified Party shall have been advised by counsel that
representation of both parties by the same counsel would be inappropriate
due to actual or potential differing interests between them.  It is
understood that the Indemnifying Party shall not, in connection with any
proceeding or related proceedings in the same jurisdiction, be liable for
the fees and expenses of more than one separate firm (in addition to any
local counsel) at any time for all such Indemnified Parties, and that all
such fees and expenses shall be reimbursed as they are incurred.  In the
case of any such separate firm for the Indemnified Parties, such firm shall
be designated in writing by the Indemnified Parties.  The Indemnifying
Party shall not be liable for any settlement of any proceeding effected
without its written consent, but if settled with such consent or if there
be a final judgment for the plaintiff, the Indemnifying Party agrees to
indemnify the Indemnified Party from and against any loss or liability by
reason of such settlement or judgment.  Notwithstanding the foregoing
sentence, if at any time an Indemnified Party shall have requested an
Indemnifying Party to reimburse the Indemnified Party for fees and expenses
of counsel as contemplated by the third sentence of this Section 6.10, the
Indemnifying Party agrees that it shall be liable for any settlement of any
proceeding effected without its written consent if (A) such settlement is
entered into more than 30 days after receipt by such Indemnifying Party of
the aforesaid request and (B) such Indemnifying Party shall not have
reimbursed the Indemnified Party in accordance with such request or
reasonably objected in writing, on the basis of the standards set forth
herein, to the propriety of such reimbursement prior to the date of such
settlement.  No Indemnifying Party shall, without the prior written consent
of the Indemnified Party, effect any settlement of any pending or
threatened proceeding in respect of which any Indemnified Party is or could
have been a party and indemnity could have been sought hereunder by such
Indemnified Party, unless such settlement includes an unconditional release
of such Indemnified Party from all liability on claims that are the subject
matter of such proceeding.

         SECTION 6.11.  Contribution.  (a)  If the indemnification provided
for in this Article  from the Indemnifying Party is unavailable to an
Indemnified Party hereunder in respect of any losses, claims, damages,
liabilities or expenses referred to in this Article , then the Indemnifying
Party, in lieu of indemnifying such Indemnified Party, shall contribute to the
amount paid or payable by such Indemnified Party as a result of such losses,
claims, damages, liabilities or expenses (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company, the
Investor and the underwriters from the offering of the securities, or (ii) if
the allocation provided by clause (i) above is not permitted by applicable
law, in such proportion as is appropriate to reflect not only the relative
benefits referred to in clause (i) but also the relative fault of the Company,
the Investor and the underwriters in connection with the statements or
omissions that resulted in such losses, claims, damages or liabilities, as
well as any other relevant equitable considerations.  The relative benefits
received by the Company, the Investor and the underwriters shall be deemed to
be in the same respective proportions as the total proceeds from the offering
(net of underwriting discounts and commissions but before deducting expenses)
received by each of the Company and the Investor Group and the total
underwriting discounts and commissions received by the underwriters, in each
case as set forth in the table on the cover of the prospectus, bear to the
aggregate public offering price of the securities.  The relative fault of the
Company, the Investor and the underwriters shall be determined by reference
to, among other things, whether any action in question, including any untrue
or alleged untrue statement of a material fact or omission or alleged omission
to state a material fact, has been made by, or relates to information supplied
by, each such party and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such action.  The amount
paid or payable by a party as a result of the losses, claims, damages,
liabilities and expenses referred to above shall be deemed to include, subject
to the limitations set forth in Section 6.10, any legal or other fees or
expenses reasonably incurred by such party in connection with any
investigation or proceeding.

         (b) The parties hereto agree that it would not be just and equitable
if contribution pursuant to this Section 6.11 were determined by pro rata
allocation (even if the underwriters were treated as one entity for such
purpose or by any other method of allocation which does not take into account
the equitable considerations referred to in the immediately preceding
Section 6.11(a).  Notwithstanding the provisions of this Article , no
underwriter shall be required to contribute any amount in excess of the
amount by which the total price at which the Equity Securities underwritten
by it and distributed to the public were offered to the public exceeds the
amount of any damages which such underwriter has otherwise been required to
pay by reason of such untrue or alleged untrue statement or omission or
alleged omission, and the Investor shall not be required to contribute any
amount in excess of the amount by which the net proceeds of the offering
(before deducting expenses) received by the Investor Group exceeds the
amount of any damages which the Investor has otherwise been required to pay
by reason of such untrue or alleged untrue statement or omission or alleged
omission.  No Person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

         (c) If indemnification is available under this Article , the
Indemnifying Party shall indemnify each Indemnified Party to the full extent
provided in Sections 6.8 and 6.9 without regard to the relative fault of said
Indemnifying Party or Indemnified Party or any other equitable consideration
provided for in this Section 6.11.


                                   ARTICLE 7
                           FURNISHING OF INFORMATION

         SECTION 7.1.   Furnishing of Information.  (a)  The Company will
furnish or make available to the Investor any documents filed by the Company
pursuant to each of Section 13, 14 and 15(d) of the Exchange Act (or successor
provisions) and all annual, quarterly or other reports furnished to the
Company's public security holders and all such other information concerning
the Company and its Subsidiaries as the Investor may reasonably request.

         (b) From and after the Effectiveness of this Agreement, the Company
shall furnish to the Investor:

             (i)  within 60 days after the end of each fiscal year, its
      consolidated balance sheet and related statements of income and changes
      in financial position, showing the financial condition of the Company
      and its consolidated Subsidiaries as of the close of such fiscal year
      and the results of its operations and the operations of such Subsidiaries
      during such year, all audited by the Company's independent public
      accountants of recognized international standing and accompanied by an
      opinion of such accountants (which shall not be qualified in any
      material respect) to the effect that such consolidated financial
      statements fairly present the financial condition and results of
      operations of the Company on a consolidated basis in accordance with
      GAAP consistently applied; and

            (ii)  within 30 days after the end of each of the first three
      fiscal quarters of each fiscal year, its consolidated balance sheet and
      related statements of income and changes in financial position, showing
      the financial condition of the Company and its consolidated Subsidiaries
      as of the close of such fiscal quarter and the results of its operations
      and the operations of such Subsidiaries during such fiscal quarter and
      the then elapsed portion of the fiscal year, all certified by one of the
      senior financial officers as fairly presenting the financial condition
      and results of operations of the Company on a consolidated basis in
      accordance with GAAP consistently applied, subject to normal year-end
      audit adjustments.

         (c) At the request of the Investor, at such time as the Investor is
required to include the financial results of the Company in the Investor's
financial statements, the Company shall cooperate with and assist the Investor
in the translation of the financial statements referred to in Subsection (a)
above in order to conform such financial statements to international
accounting standards.

         (d) The Company shall deliver to the Investor, within a reasonable
period of time after receipt of a request from the Investor, the statement
required by Treasury Department Regulation Section 1.897-2(h)(1) (relating to
the Company's and each of its Subsidiaries' status as a United States Real
Property Holding Corporation) without regard to whether the Company's Equity
Securities are publicly traded at the time such statement is requested.


                                   ARTICLE 8
                                   COVENANTS

         SECTION 8.1.   Rule 144 and Rule 144A.  (a)  The Company covenants
that it will file the reports required to be filed by it under the Securities
Act and the Exchange Act and the rules and regulations adopted by the SEC
thereunder, and it will take such further action as the Investor may
reasonably request, all to the extent required from time to time to enable the
Investor to sell Shares without registration under the Securities Act within
the limitation of the exemptions provided by (i) Rule 144 under the Securities
Act, as such Rule may be amended from time to time, or (ii) any similar rule
or regulation hereafter adopted by the SEC.  Upon the request of the Investor,
the Company will deliver to the Investor a written statement as to whether it
has complied with such reporting requirements.

         (b) If the Investor desires to transfer any of its securities of the
Company pursuant to Rule 144A, the Company will promptly, upon request by the
Investor, use its best efforts to facilitate the consummation of such Rule
144A transaction in accordance with the requirements of such Rule and with
such request and shall take all necessary or appropriate actions in connection
therewith, including but not limited to (i) preparing of an offering
memorandum with respect to such transaction containing information customarily
included in connection with Rule 144A transactions of the type contemplated by
the request, (ii) taking the actions, to the extent requested by the Investor,
referred to in Section 6.6(e), (h) and (i) and (iii) conducting "road show"
presentations as reasonably requested by such Investor.  Notwithstanding the
previous sentence, if the Investor Group Interest shall be less than 30%, the
Company will only be required to facilitate the consummation of such Rule 144A
transaction as follows: (x) if the Investor Group Interest shall be less than
30% but more than 20%, no more than three other Rule 144A transactions shall
have been effected after the date on which the Investor Group Interest was
reduced to less than 30%, (y) if the Investor Group Interest shall be less
than 20% but more than 10%, no more than two other Rule 144A transactions
shall have been effected after the date on which the Investor Group Interest
was reduced to less than 20% and (z) if the Investor Group Interest shall be
less than 10%, no more than one other Rule 144A transaction shall have been
effected after the date on which the Investor Group Interest was reduced to
less than 10%.  The Company shall pay all expenses in connection with any Rule
144A transaction pursuant hereto to the same extent the Company would be
obligated to pay Registration Expenses in connection with a Demand or
Piggyback Registration pursuant to Section 6.7.

         SECTION 8.2.   No Inconsistent Agreements.  The Company is not bound
by any agreement and will not hereafter enter into any agreement, with respect
to its securities which conflicts or is inconsistent with the rights granted
to the Investor, the Investor Group or Investor Directors.


                                   ARTICLE 9
                                 MISCELLANEOUS

         SECTION 9.1.   Notices.  All notices, requests and other
communications to any party hereunder shall be in writing (including by
telecopy or similar writing) and shall be given:

         if to the Investor, to: HLR Holdings Inc.
                                 1403 Foulk Road
                                 Suite 102
                                 P.O. Box 8985
                                 Wilmington, Delaware 19899
                                 Attention: William D. Johnston
                                 Telecopy: (302) 571-1253

                                 Roche Holdings, Inc.
                                 c/o Peter Schiller
                                 Hoffstots Lane
                                 Sands Point, NY  11050
                                 Telecopy: (516) 944-9730

         if to the Roche Holder, to:Hoffmann-La Roche Inc.
                                 340 Kingsland Street
                                 Nutley, New Jersey 07110
                                 Attention:  General Counsel
                                 Telecopy: (201) 235-2800

         if to the Company, to:  National Health Laboratories Holdings Inc.
                                   (to be renamed Laboratory Corportion
                                   of America Holdings)
                                 358 South Main Street
                                 Burlington, North Carolina 27215
                                 Attention:  General Counsel

         in each case,
         with a copy to:         Davis Polk & Wardwell
                                 450 Lexington Avenue
                                 New York, New York  10017
                                 Attention:  Peter R. Douglas, Esq.
                                 Telecopy: (212) 450-4800


         if to Directors, to their respective business addresses with a copy
         to the Investor and to the Company,

or such other address or telecopy number as such party may hereafter specify
for the purpose by notice to each the other party hereto.  Each such notice,
request or other communication shall be effective (a) if given by telecopy,
when such telecopy is transmitted to the telecopy number specified in this
Section and the appropriate confirmation is received or (b) if given by any
other means, when delivered at the address specified in this Section.

         SECTION 9.2.   Amendments; Waivers.  (a)  Any provision of this
Agreement may be amended or waived if, and only if, such amendment or waiver
is in writing and signed, in the case of an amendment, by the Investor and the
Company, or in the case of a waiver, by the party against whom the waiver is
to be effective, provided that no such amendment or waiver by the Company
shall be effective without the approval of a majority of the Independent
Directors.

         (b) No failure or delay by any party in exercising any right, power or
privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege.  The rights and remedies
herein provided shall be cumulative and not exclusive of any rights or
remedies provided by law.

         SECTION 9.3.   Severability.  If any provision of this Agreement or
the application thereof to either party or set of circumstances shall, in any
jurisdiction and to any extent, be finally held invalid or unenforceable, such
term or provision shall only be ineffective as to such jurisdiction, and only
to the extent of such invalidity or unenforceability, without invalidating or
rendering unenforceable any other terms or provisions of this Agreement or
under any other circumstances, and the parties shall negotiate in good faith a
substitute provision which comes as close as possible to the invalidated or
unenforceable term or provision, and which puts each party in a position as
nearly comparable as possible to the position it would have been in but for
the finding of invalidity or unenforceability, while remaining valid and
enforceable.

         SECTION 9.4.   Entire Agreement.  The Merger Agreement, this
Agreement, and the agreements contemplated hereby and thereby constitute the
entire agreement among the parties hereto with respect to the subject matter
hereof and thereof and supersede all prior agreements and undertakings, both
written and oral, between the parties with respect to the subject matter
hereof.

         SECTION 9.5.   Successors and Assigns.  The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns, provided that no party may
assign, delegate or otherwise transfer all or any of its rights or obligations
under this Agreement without the consent of the other party hereto, except
that the Investor may assign, delegate or otherwise transfer all or any of its
rights or obligations under this Agreement to any other member of the Investor
Group without the consent of the Company, provided that such member agrees in
writing to be bound by the provisions hereof.  The Investor shall cause any
Person who shall have acquired 30% of the Total Voting Power from the Investor
to agree in writing to assume the obligations of the Investor hereunder and to
be bound by the provisions hereof whereupon such Person shall become entitled
to all of the rights and benefits accruing to the Investor hereunder.

         SECTION 9.6.   Parties in Interest.  This Agreement shall be binding
upon and inure solely to the benefit of each party hereto and each Person who
becomes a party hereto or bound by the terms of this Agreement, and nothing in
this Agreement, express or implied, is intended to or shall confer upon any
other Person, other than the parties hereto and their respective permitted
successors and assigns, any right, benefit or remedy of any nature or kind
whatsoever under or by reason of this Agreement.

         SECTION 9.7.   Counterparts; Effectiveness.  This Agreement may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument.  This Agreement shall become effective upon the Effectiveness of
this Agreement.

         SECTION 9.8.   Governing Law.  This Agreement shall be governed by,
and construed in accordance with, the laws of the State of Delaware applicable
to contracts executed and to be fully performed in that State.  All actions
and proceedings arising out of or relating to this Agreement shall be brought
by the parties and heard and determined only in a Delaware state court or a
federal court sitting in that State and the parties hereto consent to
jurisdiction before and waive any objections of venue to the Delaware Chancery
Court.

         SECTION 9.9.   Specific Performance.  The Company and the Investor
each acknowledge and agree that the Investor's and the Company's respective
remedies at law for a breach or threatened breach of any of the provisions of
this Agreement would be inadequate and, in recognition of that fact, each
agrees that, in the event of a breach or threatened breach by the Company or
the Investor of the provisions of this Agreement, in addition to any remedies
at law, the Investor and the Company, respectively, without posting any bond
shall be entitled to obtain equitable relief in the form of specific
performance, a temporary restraining order, a temporary or permanent
injunction or any other equitable remedy which may then be available.

         SECTION 9.10.  Termination.  Except as provided below, the provisions
of this Agreement shall terminate if the Investor Group Interest shall be less
than 30%, provided, however, that (x) the provisions of Sections 2.1(a),
2.1(d), 2.1(f)  (insofar as it relates to the replacement of an Investor
Director), 2.1(g), 2.2, 2.3(b), 2.3(c), 2.6 (insofar as it relates to the
replacement of an Investor Director) and 2.9 (insofar as the first sentence
thereof) shall not terminate unless the Investor Group Interest shall be
less than 10%, (y) the provisions of Articles 6 and 8 shall not terminate
until such time as the Investor Group does not own any Registrable
Securities (except for Section 6.4, which shall terminate if the Investor
Group Interest shall be less than 20%) and (z)  Article 7 shall not
terminate unless the Investor Group Interest shall be less than 20%.
Article 1 and Article 9 shall not terminate unless as set forth above all
other provisions of this Agreement shall have terminated.  In the event
that the Investor Group Interest shall be greater than 50%, then the
provisions of Article 2 shall terminate but shall be reinstated, at the
request of the Investor, if the Investor Group Interest shall later be 50%
or lower.

         SECTION 9.11.  Waiver of Jury Trial.  Each of the parties hereto
hereby irrevocably waives all right to trial by jury in any action, proceeding
or counterclaim (whether based on contract, tort or otherwise) arising out of
or relating to this Agreement or the actions of any of them in the
negotiation, administration, performance and enforcement thereof.


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and
year first above written.



                                       HLR HOLDINGS INC.

                                       By: /s/ Bradford T. Smith
                                          ------------------------------
                                          Name:  Bradford T. Smith
                                          Title: Assistant Secretary



                                       ROCHE HOLDINGS, INC.

                                       By: /s/ Henri B. Meier
                                          ------------------------------
                                          Name:  Henri B. Meier
                                          Title: Vice President & Treasurer



                                       HOFFMANN-LA ROCHE INC.

                                       By: /s/ Thomas P. MacMahon
                                          ------------------------------
                                          Name:  Thomas P. MacMahon
                                          Title: Senior Vice President



                                       NATIONAL HEALTH LABORATORIES HOLDINGS
                                       INC.

                                       By: /s/ James R. Maher
                                          ------------------------------
                                          Name:  James R. Maher
                                          Title: President & Chief Executive
                                                 Officer
                                                        Exhibit 4
                                                              CONFORMED COPY


                       SHARING AND CALL OPTION AGREEMENT

                                  dated as of

                               December 13, 1994

                                     among

                              HLR Holdings Inc.,


                              Mafco Holdings Inc.

                                      and

                       National Health Care Group, Inc.


                               TABLE OF CONTENTS

                                                                      Page
                                                                      ----

                                   ARTICLE 1
                                  DEFINITIONS

           1.1.  Certain Definitions......................................  1
           1.2.  Expenses.................................................  2


                                   ARTICLE 2
                               SHARING PAYMENTS

           2.1.  Sharing Payments to HLR..................................  2


                                   ARTICLE 3
                  VOTING OF STOCKHOLDER SHARES FOR THE MERGER

           3.1.  No Sale of Stockholder Shares Prior to Effective Time....  3
           3.2.  Voting of Stockholder Shares.............................  3


                                   ARTICLE 4
                                  CALL RIGHTS

           4.1.  Call Right with Respect to Stockholder Shares............  3
           4.2.  Closing with Respect to Exercise of Call Right...........  4


                                   ARTICLE 5
                 REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER

           5.1.  Valid Title..............................................  4
           5.2.  Authority; Binding Effect................................  4
           5.3.  Governmental Authorization...............................  5
           5.4.  Non-Contravention........................................  5


                                   ARTICLE 6
                     REPRESENTATIONS AND WARRANTIES OF HLR

           6.1.  Corporate Power and Authority............................  5
           6.2.  Acquisition for HLR's Account............................  5


                                   ARTICLE 7
                           COVENANTS OF STOCKHOLDER

           7.1.  No Solicitation; No Shopping.............................  6
           7.2.  Further Action...........................................  6


                                   ARTICLE 8
                                 MISCELLANEOUS

           8.1.  Registration Provisions..................................  6
           8.2.  Additional Agreements....................................  6
           8.3.  Specific Performance.....................................  7
           8.4.  Notices..................................................  7
           8.5.  Amendments; Termination..................................  7
           8.6.  Successors and Assigns...................................  7
           8.7.  Governing Law............................................  8
           8.8.  Counterparts; Effectiveness..............................  8





                       SHARING AND CALL OPTION AGREEMENT



         SHARING AND CALL OPTION AGREEMENT, dated as of December 13, 1994
among HLR Holdings Inc., a Delaware corporation ("HLR") and parent of Roche
Biomedical Laboratories, Inc., a New Jersey corporation ("RBL"), Mafco
Holdings Inc., a Delaware corporation ("Mafco"), and National Health Care
Group, Inc., a Delaware corporation (the "Stockholder") and an indirect
wholly-owned subsidiary of Mafco and, solely with respect to Section 8.1
hereof, National Health Laboratories Holdings Inc., a Delaware corporation
(the "Company").

         WHEREAS, HLR, RBL, the Company and Hoffmann-La Roche Inc., a New
Jersey Corporation propose to enter into an Agreement and Plan of Merger of
even date herewith (the "Merger Agreement") providing for the merger of RBL
into and with the Company as the surviving corporation (the "Merger"); and

         WHEREAS, Stockholder owns approximately 23.8%of the issued and
outstanding shares of the Company's common stock, $.01 par value, per share
(the "Common Stock"); and

         WHEREAS, in connection with entering into the Merger Agreement, HLR,
Mafco and Stockholder desire to enter into this Agreement setting forth
certain rights and obligations of the parties with respect to Stockholder's
investment in the Company;

         NOW, THEREFORE, in consideration of the premises and the
representations, warranties and agreements herein contained, the parties agree
as follows:


                                   ARTICLE 1
                                  DEFINITIONS

         SECTION 1.1.   Certain Definitions.  Capitalized terms used and not
defined herein have the meanings assigned to them in the Merger Agreement.
The following terms, as used herein, have the following meanings:

         "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under common control
with such Person, provided that no stockholder of the Company shall be deemed
an Affiliate of any other stockholder solely by reason of any investment in
the Company.  For the purpose of this definition, the term "control"
(including with correlative meanings, the terms "controlling", "controlled by"
and "under common control with"), as used with respect to any Person, shall
mean the possession, directly or indirectly, of the power to direct or cause
the direction of the management and policies of such Person, whether through
the ownership of voting securities or by contract or otherwise.

         "Board" means the board of directors of the Company.

         "Business Day" means any day except a Saturday, Sunday or other day
on which commercial banking institutions in New York City are authorized by
law or executive order to close.

         "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended.

         "NASD" means the National Association of Securities Dealers, Inc.

         "NASDAQ" means the NASD Automated Quotation System.

         "NASDAQ/NMS" means the NASDAQ-National Market System.

         "Person" means an individual, corporation, partnership, association,
trust or other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

         "Securities Act" means the Securities Act of 1933, as amended, and
the rules and regulations thereunder.

         SECTION 1.2.   Expenses.  All costs and expenses incurred in
connection with this Agreement shall be paid by the party incurring such cost
or expense.


                                   ARTICLE 2
                               SHARING PAYMENTS

         SECTION 2.1.   Sharing Payments to HLR.  (a)  In the event that a
termination fee shall have become payable by the Company to HLR pursuant to
Section 11.4(b) of the Merger Agreement and Stockholder sells, transfers,
assigns or otherwise disposes of (including by conversion or exchange in a
merger, exchange offer or the like) (any such action being a "transfer") any
of the Stockholder Shares (as defined in Section 2.1(d), Stockholder and
Mafco, jointly and severally, agree to pay to HLR an amount in cash (a
"Sharing Payment") equal to the product of (i) the number of Stockholder
Shares transferred by Stockholder or any of the controlled Affiliates of
Mafco and (ii) 50% of the excess, if any, of (A) the per share cash
consideration or the per share fair market value, as the case may be, of
any non-cash consideration received by Stockholder and each such controlled
Affiliate as a result of such transfer over (B) $20.00 (as adjusted to give
effect to any stock dividend, stock split, recapitalization, combination or
exchange of shares, merger, consolidation, reorganization or other similar
change or transaction by the Company).

         (b) For purposes of this Section 2.1, the fair market value of any
non-cash consideration:

            (i)   consisting of securities listed on a national securities
      exchange or traded on the NASDAQ/NMS shall be equal to the average
      closing price per share of such security as reported on such exchange or
      NASDAQ/NMS for the five trading days before the date of disposition by
      Stockholder; and

           (ii)   consisting of consideration which is other than cash or
      securities of the type specified in clause (i) of this Section 2.1,
      shall be determined by a nationally recognized independent investment
      banking firm (which firm shall be mutually agreed upon by the
      parties) within 10 Business Days of the selection of such investment
      banking firm; provided, however, that if the parties are unable to
      agree within two Business Days after the date of disposition as to
      the investment banking firm, then Morgan Stanley & Co.  Incorporated
      and CS First Boston Corporation shall jointly name a third investment
      banking firm; provided further, that the fees and expenses of such
      investment banking firm shall be borne equally by HLR, on the one
      hand, and Stockholder, on the other hand.  The determination of the
      investment banking firm shall be binding upon the parties.

         (c) Any Sharing Payment required to be made pursuant to this Section
2.1 shall be made two Business Days after the later of (i) the fifth trading day
after settlement of any disposition of any securities referred to in
subsection (b)(i) above for cash or (ii) the date on which the investment
banking firm delivers to the parties its determination of the per share value
of any non-cash consideration referred to in subsection (b)(ii) above received
pursuant to any disposition, as applicable.

         (d) The term "Stockholder Shares" as used herein means (i) 20,176,729
shares of Common Stock which are all of the voting securities of the Company
presently beneficially owned or owned of record by Stockholder, Mafco and
their respective controlled Affiliates and (ii) any additional shares of
Common Stock or rights to acquire voting securities of the Company acquired by
Stockholder, Mafco or any of their respective controlled Affiliates (whether
by purchase or otherwise) from and after the date of this Agreement.


                                   ARTICLE 3
                  VOTING OF STOCKHOLDER SHARES FOR THE MERGER

         SECTION 3.1.   No Sale of Stockholder Shares Prior to Effective Time.
Stockholder shall not transfer any Stockholder Shares prior to the Effective
Time except if a termination fee shall have become payable by the Company to
HLR pursuant to Section 11.4(b) of the Merger Agreement.

         SECTION 3.2.   Voting of Stockholder Shares.  Stockholder shall be,
and Stockholder and Mafco shall cause their controlled Affiliates which hold
Common Stock to be, present in person or by proxy at the NHL Stockholder
Meeting for the purpose of voting on the adoption of the Merger Agreement, and
Stockholder and Mafco shall cause all of the Stockholder Shares to be voted in
favor of the Merger and adoption of the Merger Agreement.


                                   ARTICLE 4
                                  CALL RIGHTS

         SECTION 4.1.   Call Right with Respect to Stockholder Shares.  (a)
At any time after the third anniversary of the date on which the Effective
Time occurs, HLR or an Affiliate of HLR (or if such purchase is not permitted
pursuant to applicable law or by any material agreement to which HLR or such
Affiliate is bound, a third party nominated by HLR) (any such party being a
"Purchaser") may exercise the right (the "Call Right"), which right may only
be exercised once, to purchase all, but not less than all, the shares of Common
Stock then owned by Stockholder, Mafco or any of their controlled Affiliates.
If Purchaser intends to exercise the Call Right, then, not less than 20
Business Days prior to the exercise thereof, Purchaser shall so notify
Stockholder of such intention to exercise the Call Right, specifying in such
notice (the "Call Notice") the date of such exercise (the "Exercise Date").

         (b) On the Call Closing Date (as defined in Section 4.2), Purchaser
shall pay a price per share for the shares to be purchased as specified in the
Call Notice, equal to 102% of the average closing price per share of such
security as reported on the principal national securities exchange on which
such shares are listed, or if not so listed, as reported on NASDAQ/NMS, for
the 30 trading days before the Exercise Date.

         SECTION 4.2.   Closing with Respect to Exercise of Call Right.  The
closing (the "Call Closing") of the call transaction shall take place at such
place as may be agreed upon by the parties and on such date as may be set
forth in a written notice from Purchaser to Stockholder (the "Call Closing
Date"), but in no event more than 5 Business Days after the later of (i) the
Exercise Date, and (ii) expiration of any applicable HSR Act waiting period or
the satisfaction of any required regulatory approval.  At the Call Closing,
Stockholder, Mafco, or any of their controlled Affiliates, as the case may be,
will convey good, marketable and valid title to the shares being purchased
free and clear of any and all claims, liens, charges, encumbrances and
security interests.  The parties agree to take all actions as may be
reasonably required to effect the Call Closing as promptly as practicable.

         SECTION 4.3.   No Sale After Call Notice.   From and after the
receipt of a Call Notice, neither Stockholder, Mafco nor any of their
controlled Affiliates shall transfer any shares of Common Stock that are owned
by Stockholder, Mafco or any such controlled Affiliate except during any
period expiring 15 Business Days prior to the Exercise Date.


                                   ARTICLE 5
                 REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER

         Stockholder and Mafco, jointly and severally, represent and warrant
to HLR that:

         SECTION 5.1.   Valid Title.  Stockholder is the sole, true, lawful
and beneficial and record owner of the Stockholder Shares with no restrictions
on Stockholder's voting rights or rights of disposition pertaining thereto
other than those arising pursuant to bona fide pledge arrangements.  None of
the Stockholder Shares is subject to any voting trust or other agreement
(other than this Agreement) or arrangement with respect to the voting of such
Stockholder Shares other than those arising from bona fide pledge
arrangements.

         SECTION 5.2.   Authority; Binding Effect.  Stockholder and Mafco have
all requisite power and authority to enter into this Agreement and to
consummate the transactions contemplated hereby.  The execution, delivery and
performance by Stockholder and Mafco of this Agreement and the consummation by
Stockholder and Mafco of the transactions contemplated hereby have been duly
authorized by all necessary corporate action by Stockholder and Mafco.  This
Agreement has been duly executed and delivered by Stockholder and Mafco and
constitutes a valid and binding agreement of Stockholder and Mafco.

         SECTION 5.3.   Governmental Authorization.  The execution, delivery
and performance by Stockholder and Mafco of this Agreement and the
consummation by Stockholder and Mafco of the transactions contemplated hereby
require no action by, or filing with, any governmental body, agency, official
or authority, other than compliance with any applicable requirements of the
HSR Act.

         SECTION 5.4.   Non-Contravention.  The execution, delivery and
performance of this Agreement by Stockholder and Mafco do not, and the
consummation by Stockholder and Mafco of the transactions contemplated hereby
do not and will not, (i) contravene or conflict with the certificate of
incorporation or the bylaws of Stockholder and Mafco, (ii) assuming compliance
with the HSR Act, contravene or conflict with or constitute a violation of any
provision of any law, regulation, judgment, injunction, order or decree
binding upon or applicable to Stockholder and Mafco, (iii) constitute a
default under or give rise to a right of termination, cancellation or
acceleration of any right or obligation of Stockholder and Mafco or to a loss
of any benefit to which Stockholder and Mafco are entitled under any provision
of any agreement, contract or other instrument binding upon Stockholder or
Mafco or any license, franchise, permit or other similar authorization held by
Stockholder or Mafco or (iv) result in the creation or imposition of any lien
on any asset of Stockholder or Mafco.  Notwithstanding anything to the
contrary in this Section 5.4, it is understood that the Stockholder Shares are
subject to bona fide pledge arrangements, but that Stockholder and Mafco will
take all actions necessary to enable Stockholder to comply with Section 3.2
and Article 4 hereof.


                                   ARTICLE 6
                     REPRESENTATIONS AND WARRANTIES OF HLR

         HLR represents and warrants to Stockholder:

         SECTION 6.1.   Corporate Power and Authority.  HLR has all requisite
corporate power and authority to enter into this Agreement and to perform its
obligations hereunder.  The execution, delivery and performance by HLR of this
Agreement and the consummation by HLR of the transactions contemplated hereby
have been duly authorized by all necessary action, if any, of HLR.  This
Agreement has been duly executed and delivered by HLR and constitutes a valid
and binding agreement of HLR.

         SECTION 6.2.   Acquisition for HLR's Account.  Any shares of Common
Stock to be acquired pursuant to the Call Rights set forth in Article  will be
acquired by HLR for its own account and not with a view to the public
distribution thereof and will not be transferred except in compliance with the
Securities Act.  If required by applicable law, in the written opinion of
outside legal counsel to the Company (which opinion shall be) satisfactory to
HLR, any shares of Common Stock transferred hereunder may bear a legend
providing that such shares of Common Stock may only be sold or otherwise
disposed of in accordance with such Act.


                                   ARTICLE 7
                           COVENANTS OF STOCKHOLDER

         SECTION 7.1.   No Solicitation; No Shopping.  Stockholder and Mafco
shall comply with, and be bound by, the restrictions set forth in Section
5.4(a) of the Merger Agreement as if such restrictions were fully set forth in
this Agreement.

         SECTION 7.2.   Further Action.  Stockholder and Mafco will take all
actions necessary to enable each of them and their Affiliates to comply with
Section 3.2 and Article 4 hereof.


                                   ARTICLE 8
                                 MISCELLANEOUS

         SECTION 8.1.   Registration Provisions.  The Company shall use its
best efforts to cause the Registration Statement (as defined in the Merger
Agreement) to include a resale prospectus that would permit Stockholder (or
any pledgee of the Merger Shares under a bona fide pledge arrangement with
Stockholder) to sell shares of Common Stock received by Stockholder in the
Merger (the "Merger Shares") without restriction and, after the filing of the
Registration Statement, shall use its best efforts to prepare and file with
the SEC such amendments and post-effective amendments to the Registration
Statement as may be necessary to keep such Registration Statement continuously
effective for a period ending on the third anniversary of the date hereof and
during such period shall use its best efforts to cause the resale prospectus
to be supplemented by any required prospectus supplement.  In addition, the
registration procedures set forth in Sections 6.6 through 6.11 as set forth in
the form of the Stockholder Agreement between HLR Holdings Inc. and the
Company attached as an Exhibit to the Merger Agreement (the "Stockholder
Agreement") (including, without limitation, the provisions with respect to
filings, blue sky qualification, amendments, due diligence, indemnification
and contribution) for the benefit of Investor (as defined therein) shall be
deemed incorporated herein, as applicable, for the benefit of Stockholder as
if fully set forth in this place (with all references to the "Investor"
therein being deemed to be references to Stockholder or the pledgee of any
Merger Shares referred to above, as the case may be) and in connection with
the registration referred to above, the Company shall pay the applicable
Registration Expenses (as defined in the Stockholder Agreement).

         SECTION 8.2.   Additional Agreements.  Subject to the terms and
conditions of this Agreement, each of the parties hereto agrees to use all
reasonable efforts to take, or cause to be taken, all action and to do, or
cause to be done, all things necessary, proper or advisable under applicable
laws and regulations and which may be required under any agreements,
contracts, commitments, instruments, understandings, arrangements or
restrictions of any kind to which such party is a party or by which such party
is governed or bound, to enable HLR to exercise and enjoy all the benefits and
rights associated with the Call Option and the Sharing Payment and otherwise
to consummate and make effective the transactions contemplated by this
Agreement, to obtain all necessary waivers, consents and approvals and effect
all necessary registrations and filings, including, but not limited to,
filings under the HSR Act, responses to requests for additional information
related to such filings, and submission of information requested by
governmental authorities, and to rectify any event or circumstances which
could impede consummation of the transactions contemplated hereby.

         SECTION 8.3.   Specific Performance.  (a)  The parties hereto agree
that HLR would be irreparably damaged if for any reason Stockholder, Mafco or
their Affiliates, as the case may be, failed to sell the shares of Common
Stock upon exercise of the Call Option, or to perform any of its other
obligations under this Agreement, and that HLR would not have an adequate
remedy at law for money damages in such event.  Accordingly, HLR shall be
entitled to specific performance and injunctive and other equitable relief to
enforce the performance of this Agreement by Stockholder and Mafco.  This
provision is without prejudice to any other rights that HLR may have against
Stockholder or Mafco for any failure to perform their respective obligations
under this Agreement.

         (b)  The parties hereto also agree that Stockholder would be
irreparably damaged if for any reason the Company failed to perform in full
its obligations as set forth in Section 8.1 hereof, and that Stockholder would
not have any adequate remedy at law or for money damages in such event.
Accordingly, Stockholder shall be entitled to specific performance and
injunctive and other equitable relief to enforce the performance of this
Agreement by the Company.  This provision is without prejudice to any other
rights that Stockholder may have against the Company for any failure to
perform its obligations under this Agreement.

         SECTION 8.4.   Notices.  All notices, requests, claims, demands and
other communications hereunder shall be deemed to have been duly given when
delivered in Person, by cable, telegram or telex, or by registered or
certified mail (postage prepaid, return receipt requested) to such party at
its address set forth on the signature page hereto.

         SECTION 8.5.   Amendments; Termination.  This Agreement may not be
modified, amended, altered or supplemented, except upon the execution and
delivery of a written agreement executed by the parties hereto.  This
Agreement shall terminate upon the earliest to occur of (i) the date on which
Stockholder, Mafco and their Affiliates own no shares of Common Stock except
with respect to the obligation to make any Sharing Payment which has become
due as a result of any transfer of shares of Common Stock (provided that such
shares have not been transferred in violation of this Agreement) or (ii) the
effective date of any termination of the Merger Agreement pursuant to Section
10.1(a), (b), (c), (e), or (g) thereof.  Article  of this Agreement shall
terminate when Stockholder, Mafco and their respective controlled Affiliates
shall own no shares of Common Stock that are subject to the registration
requirements of the Securities Act.  Article of this Agreement shall
terminate 180 days after the effective date of any termination of the
Merger Agreement pursuant to Section 10.1(d) or (f) thereof except with
respect to the obligation to make any Sharing Payment which has become due
as a result of any transfer of shares of Common Stock.

         SECTION 8.6.   Successors and Assigns.  The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns; provided that no party may
assign, delegate or otherwise transfer any of its rights or obligations under
this Agreement without the consent of the other parties hereto, except that
HLR may assign its rights and obligations hereunder to any Affiliate of HLR or
pursuant to Article 4 to a third party.  Any Affiliate of Stockholder or Mafco
who acquires shares of Common Stock shall become a party to and be bound by
this Agreement.

         SECTION 8.7.   Governing Law.  This Agreement shall be construed in
accordance with and governed by the law of Delaware without giving effect to
the principles of conflicts of laws thereof.

         SECTION 8.8.   Counterparts; Effectiveness.  This Agreement may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument.  This Agreement shall become effective when each party hereto
shall have received counterparts hereof signed by all of the other parties
hereto.


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed as of the day and year first above written.




                                    HLR HOLDINGS INC.

                                    /s/ Bradford T. Smith
                                   ------------------------------
1403 Foulk Road, Suite 102          Name: Bradford T. Smith
P.O. Box 8985                       Title:Assistant Secretary
Wilmington, DE 19899



                                    MAFCO HOLDINGS INC.

                                    /s/ Joram Salig
                                    ------------------------------
35 East 62nd Street                 Name: Joram Salig
New York, NY 10021                  Title: Vice President



                                    NATIONAL HEALTH CARE GROUP, INC.

                                    /s/ Howard F. Gordon
                                    ------------------------------
Cypress Financial Center            Name: Howard F. Gordon
5900 North Andrews Avenue           Title:Vice President
Suite 700A
Ft. Lauderdale, FL 33309

                                    NATIONAL HEALTH LABORATORIES
                                    HOLDINGS INC.

                                    /s/ James R. Maher
                                    ------------------------------
4225 Executive Square               Name:  James R. Maher
Suite 800                           Title: President and Chief
La Jolla, CA 92037                         Executive Officer


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