Exhibit 10.1
     COMDISCO

                                                          MASTER LEASE AGREEMENT
     A TECHNOLOGY SERVICES COMPANY



MASTER LEASE AGREEMENT dated as of OCTOBER 25, 1999 by and between COMDISCO
LABORATORY AND SCIENTIFIC GROUP, A DIVISION OF COMDISCO HEALTHCARE GROUP, INC.
("Lessor") and MYRIAD GENETICS. INC. ("Lessee").

IN CONSIDERATION of the mutual agreements described below, the parties agree as
follows (all capitalized terms are defined in Section 14.12:

1. Property Leased.

     Lessor leases to Lessee all of the Equipment described on each Schedule. In
the event of a conflict, the terms of a Schedule prevail over this Master Lease.

2. Term.

     On the Commencement Date Lessee will be deemed to accept the Equipment,
will be bound to its rental obligations for each item of Equipment and the term
of a Schedule will begin and continue through the Initial Term and thereafter
until terminated by either party upon prior written notice received during the
Notice Period. No termination may be effective prior to the expiration of the
Initial Term.

3. Rent and Payment.

     Rent is due and payable in advance, in immediately available funds, on the
first day of each Rent Interval to the payee and at the location specified in
Lessor's invoice. Interim Rent is due and payable when invoiced. If any payment
is not made when due, Lessee will pay interest at the Overdue Rate.

4. Selection and Warranty and Disclaimer of Warranties.

     4.1 Selection. Lessee acknowledges that it has selected the Equipment and
disclaims any reliance upon statements made by the Lessor.

     4.2 Warranty and Disclaimer of Warranties. Lessor warrants to Lessee that,
so long as Lessee is not in default, Lessor will not disturb Lessee's quiet and
peaceful possession, and unrestricted use of the Equipment. To the extent
permitted by the manufacturer, Lessor assigns to Lessee during the term of the
Schedule any manufacturer's warranties for the Equipment. LESSOR MAKES NO OTHER
WARRANTY, EXPRESS OR IMPLIED AS TO ANY MATTER WHATSOEVER, INCLUDING, WITHOUT
LIMITATION, THE MERCHANTABILITY OF THE EQUIPMENT OR ITS FITNESS FOR A PARTICULAR
PURPOSE, OR ITS COMPLIANCE WITH GOVERNMENTAL REGULATIONS. Lessor is not
responsible for any liability, claim, loss, damage or expense of any kind
(including strict liability in tort) caused by the Equipment except for any loss
or damage caused by the negligent acts of Lessor. In no event is Lessor
responsible for special, incidental or consequential damages.

5. Title and Assignment.

     5.1 Title. Lessee holds the Equipment subject and subordinate to the rights
of the Owner, Lessor, any Assignee and any Secured Party. Lessee authorizes
Lessor, as Lessee's agent, to prepare, execute and file in Lessee's name
precautionary Uniform Commercial Code financing statements showing the interest
of the Owner, Lessor, and any Assignee or Secured Party in the Equipment and to
insert serial numbers in Schedules as appropriate. Except as provided in
Sections 5.2 and 7.2, Lessee will, at its expense, keep the Equipment free and
clear from any liens or encumbrances of any kind (except any caused by Lessor)
and will indemnify and hold Lessor, Owner, any Assignee and Secured Party
harmless from and against any loss caused by Lessee's failure to do so.


  5.2 Relocation or Sublease. Upon prior written notice, Lessee may relocate the
Equipment to any location within the continental United States provided (i) the
Equipment will not be used by an entity exempt from federal income tax, (ii) all
additional costs (including any administrative fees, additional taxes and
insurance coverage) are reconciled and promptly paid by Lessee. Lessee may
sublease the Equipment upon the reasonable consent of the Lessor and the Secured
Party and provided Lessee meets the requirements under (i) and (ii) above. No
relocation or sublease will relieve Lessee from any of its obligations under
this Master Lease and the applicable Schedule.

  5.3 Assignment by Lessor. The terms and conditions of each Schedule have been
fixed by Lessor in order to permit Lessor to sell and/or assign or transfer its
interest or grant a security interest in each Schedule and/or the Equipment to a
Secured Party or Assignee. In that event the term Lessor will mean the Assignee
and any Secured Party. However, any assignment, sale, or other transfer by
Lessor will not relieve Lessor of its obligations to Lessee and will not
materially change Lessee's duties or materially increase the burdens or risks
imposed on Lessee. The Lessee consents to and will acknowledge such assignments
in a written notice given to Lessee. Lessee also agrees that:

  (a) The Secured Party will be entitled to exercise all of Lessor's rights, but
      will not be obligated to perform any of the obligations of Lessor. The
      Secured Party will not disturb Lessee's quiet and peaceful possession and
      unrestricted use of the Equipment so long as Lessee is not in default and
      the Secured Party continues to receive all Rent payable under the
      Schedule;

  (b) Lessee will pay all Rent and all other amounts payable to the Secured
      Party, despite any defense or claim which it has against Lessor. Lessee
      reserves its right to have recourse directly against Lessor for any
      defense or claim; and

  (c) Subject to and without impairment of Lessee's leasehold rights in the
      Equipment, Lessee holds the Equipment for the Secured Party to the extent
      of the Secured Party's rights in that Equipment.

6. Net Lease and Taxes and Fees.

  6.1 Net Lease. Each Schedule constitutes a net lease. Lessee's obligation to
pay Rent and all other amounts is absolute and unconditional and is not subject
to any abatement, reduction, set-off, defense, counterclaim, interruption,
deferment or recoupment for any reason whatsoever.

  6.2 Taxes and Fees. Lessee will pay when due or reimburse Lessor for all
taxes, fees or any other charges (together with any related interest or
penalties not arising from the negligence of Lessor) accrued for or arising
during the term of each Schedule against Lessor, Lessee or the Equipment by any
govemmental authority (except only Federal, state and local taxes on the capital
or the net income of Lessor). Lessor will file all personal property tax retums
for the Equipment and pay all property taxes due. Lessee will reimburse Lessor
for property taxes within thirty (30) days of receipt of an invoice.

7. Care, Use and Maintenance, Attachments and Reconfigurations, and
   Inspection by Lessor.

  7.1 Care, Use and Maintenance. Lessee will operate the Equipment in accordance
with all laws and regulations and maintain the Equipment in good operating order
and appearance, protect the Equipment from deterioration, other than normal wear
and tear, and will not use the Equipment for any purpose other than that for
which it was designed. If commercially available, Lessee will maintain in force
a standard maintenance contract with the manufacturer of the Equipment and upon
request will provide Lessor with a complete copy of that contract. With Lessor's
prior written consent, Lessee may have the Equipment maintained by a party other
than the manufacturer. Lessee agrees to pay any costs necessary for the
manufacturer to bring the Equipment to then current release, revision and
engineering change levels, and to re-certify the Equipment as eligible for
manufacturer's maintenance at the expiration of the lease term. The lease term
will continue upon the same terms and conditions until recertification has been
obtained.

  7.2 Attachments and Reconfigurations. Upon Lessor's prior written consent,
Lessee may reconfigure and install Attachments on the Equipment. In the event of
such a Reconfiguration or Attachment, Lessee shall, upon return of the
Equipment, at its expense, restore the Equipment to the original configuration
specified on the Schedule in accordance with the manufacturer's specifications
and in the same operating order, repair and appearance as when installed (normal
wear and tear excluded). Altematively, with Lessors prior written consent which
will not be unreasonably withheld, Lessee may retum the Equipment with any
Attachment or upgrade.


  7.3 Inspection by Lessor. Upon request, Lessee, during reasonable business
hours and subject to Lessee's security requirements, will make the Equipment and
its related log and maintenance records, instruction manuals, published
statements of capabilities and technical specifications and certification,
qualification and calibration reports available to Lessor for inspection.

8.   Representations and Warranties of Lessee.

  Lessee represents and warrants that for the Master Lease and each Schedule:

  (a) The execution, delivery and performance of the Lessee have been duly
      authorized by all necessary corporate action;

  (b) The individual executing was duly authorized to do so;

  (c) The Master Lease and each Schedule constitute legal, valid and binding
      agreements of the Lessee enforceable in accordance with their terms;

  (d) The Equipment is personal property and when subjected to use by the
      Lessee will not be or become fixtures under applicable   law; and

  (e) The Equipment will be for laboratory use only and will not be used in a
      clinical environment on patients.

9.   Delivery and Return of Equipment.

  Lessee assumes the full expense of transportation of the Equipment to its
initial location, installation, deinstallation, and return to a location within
the continental United States (including without limitation the expense of in-
transit insurance) all pursuant to Lessor's instructions and manufacturer's
specifications. Regarding deinstallation, Lessee will assure that the Equipment
is deinstalled by the manufacturer in accordance with the manufacturer's
recommended procedures and decontaminated for transport in accordance with any
Environmental Law, and retumed with a Verification of Decontamination in the
same operating order, repair, condition and appearance as when originally
installed (less normal wear and tear and depreciation) meeting all original
equipment manufacturer's specifications for continued manufacturer's
maintenance, and accompanied by all associated documents, manuals (including,
but not limited to, those listed in Section 7.3), spare parts and accessories
and maintenance records for the duration of the Schedule. In connection with
deinstallation, Lessee will assure that any Contaminant removed from the
Equipment will be removed and transported by a licensed waste removal
transporter.

10.  Labeling.

  Upon request, Lessee will mark the Equipment indicating Lessors interest.
Lessee will keep all Equipment free from any other marking or labeling which
might be interpreted as a claim of ownership.

11.  Indemnity.

Lessee will indemnify and hold Lessor, its parent company, any Assignee and any
Secured Party harmless from and against any and all claims, costs, expenses,
damages and liabilities, including reasonable attomeys' fees, arising out of the
ownership (for strict liability in tort only), selection, possession, leasing,
operation, control, use, maintenance, delivery, return or other disposition of
the Equipment. However, Lessee is not responsible to a party indemnified
hereunder for any claims, costs, expenses, damages and liabilities occasioned by
the negligent acts of such indemnified party. Lessee agrees to carry death,
bodily injury and property damage liability insurance during the term of the
Master Lease in amounts and against risks customarily insured against by the
Lessee on similar equipment owned by it. Any amounts received by Lessor under
that insurance will be credited against Lessee's obligations under this Section.

12.  Risk of Loss.

  Effective upon delivery and until the Equipment is retumed, Lessee relieves
Lessor of responsibility for all risks of physical damage to or loss or
destruction of the Equipment. Lessee will carry casualty insurance for each item
of Equipment in an amount


not less than the Casualty Value. All policies for such insurance will name the
Lessor and any Secured Party as additional insured and as loss payee, and will
provide for at least thirty (30) days prior written notice to the Lessor of
cancellation or expiration. The Lessee will fumish appropriate evidence of such
insurance. Lessee shall promptly repair any damaged item of Equipment unless
such Equipment has suffered a Casualty Loss. Within fifteen (15) days of a
Casualty Loss, Lessee will provide written notice of that loss to Lessor and
Lessee will, at Lessors option, either (a) replace the item of Equipment with
Like Equipment and marketable title to the Like Equipment will automatically
vest in Lessor or (b) pay the Casualty Value and after that payment and the
payment of all other amounts due and owing, Lessee's obligation to pay further
Rent for the item of Equipment will cease.

13.  Default, Remedies and Mitigation.

  13.1 Default. The occurrence of any one or more of the following Events of
       Default constitutes a default under a Schedule:

  (a)  Lessee's failure to pay Rent or other amounts payable by Lessee when due
       if that failure continues for ten (10) days after written notice; or

  (b)  Lessee's failure to perform any other term or condition of the Schedule
       or the material inaccuracy of any representation or warranty made by the
       Lessee in the Schedule or in any document or certificate furnished to the
       Lessor hereunder if that failure or inaccuracy continues for fifteen (15)
       days after written notice; or

  (c)  An assignment by Lessee for the benefit of its creditors, the failure by
       Lessee to pay its debts when due, the insolvency of Lessee, the filing by
       Lessee or the filing against Lessee of any petition under any bankruptcy
       or insolvency law or for the appointment of a trustee or other officer
       with similar powers, the adjudication of Lessee as insolvent, the
       liquidation of Lessee, or the taking of any action for the purpose of the
       foregoing; or

  (d)  The occurrence of an Event of Default under any Schedule or other
       agreement between Lessee and Lessor or its Assignee or Secured Party.

  13.2 Remedies. Upon the occurrence of any of the above Events of Default,
       Lessor, at its option, may:

(a)  enforce Lessee's performance of the provisions of the applicable Schedule
     by appropriate court action in law or in equity;

(b)  recover from Lessee any damages and or expenses, including Default Costs;

(c)  with notice and demand, recover all sums due and accelerate and recover the
     present value of the remaining payment stream of all Rent due under the
     defaulted Schedule (discounted at the same rate of interest at which such
     defaulted Schedule was discounted with a Secured Party plus any prepayment
     fees charged to Lessor by the Secured Party or, if there is no Secured
     Party, then discounted at 6%) together with all Rent and other amounts
     currently due as liquidated damages and not as a penalty;

(d)  with notice and process of law and in compliance with Lessee's security
     requirements, Lessor may enter on Lessee's premises to remove and repossess
     the Equipment without being liable to Lessee for damages due to the
     repossession, except those resulting from Lessors, its assignees', agents'
     or representatives' negligence; and

(e) pursue any other remedy permitted by law or equity.

  The above remedies, in Lessor's discretion and to the extent permitted by law,
are cumulative and may be exercised successively or concurrently.

  13.3 Mitigation. Upon return of the Equipment pursuant to the terms of Section
13.2, Lessor will use its best efforts in accordance with its normal business
procedures (and without obligation to give any priority to such Equipment) to
mitigate Lessors damages as described below. EXCEPT AS SET FORTH IN THIS
SECTION, LESSEE HEREBY WAIVES ANY RIGHTS NOW OR HEREAFTER CONFERRED BY STATUTE
OR OTHERWISE WHICH MAY REQUIRE LESSOR TO MITIGATE ITS DAMAGES OR MODIFY ANY OF
LESSOR'S RIGHTS OR REMEDIES STATED HEREIN. Lessor may sell, lease or otherwise
dispose of all or any part of the Equipment at a public or private sale for cash
or credit with the privilege of purchasing


the Equipment. The proceeds from any sale, lease or other disposition of the
Equipment are defined as either:

     (a)  if sold or otherwise disposed of, the cash proceeds less the Fair
          Market Value of the Equipment at the expiration of the Initial Term
          less the Default Costs; or

     (b)  if leased, the present value (discounted at three points over the
          prime rate as referenced in the Wall Street Journal at the time of the
          mitigation) of the rentals for a term not to exceed the Initial Term,
          less the Default Costs.

     Any proceeds will be applied against liquidated damages and any other sums
due to Lessor from Lessee. However, Lessee is liable to Lessor for, and Lessor
may recover, the amount by which the proceeds are less than the liquidated
damages and other sums due to Lessor from Lessee.

14.  Additional Provisions.

     14.1 Entire Agreement. This Master Lease and associated Schedules
supersede all other oral or written agreements or understandings between the
parties concerning the Equipment including, for example, purchase orders. ANY
AMENDMENT OF THIS MASTER LEASE OR A SCHEDULE, MAY ONLY BE ACCOMPLISHED BY A
WRITING SIGNED BY THE PARTY AGAINST WHOM THE AMENDMENT IS SOUGHT TO BE ENFORCED.

     14.2 No Waiver. No action taken by Lessor or Lessee shall be deemed to
constitute a waiver of compliance with any representation, warranty or covenant
contained in this Master Lease or a Schedule. The waiver by Lessor or Lessee of
a breach of any provision of this Master Lease or a Schedule will not operate or
be construed as a waiver of any subsequent breach.

     14.3 Binding Nature. Each Schedule is binding upon, and inures to the
benefit of Lessor and its assigns. LESSEE MAY NOT ASSIGN ITS RIGHTS OR
OBLIGATIONS.

     14.4 Survival of Obligations. All agreements, obligations including, but
not limited to those arising under Section 6.2, representations and warranties
contained in this Master Lease, any Schedule or in any document delivered in
connection with those agreements are for the benefit of Lessor and any Assignee
or Secured Party and survive the execution, delivery, expiration or termination
of this Master Lease.

     14.5 Notices. Any notice, request or other communication to either party
by the other will be given in writing and deemed received upon the eariier of
actual receipt or three days after mailing if mailed postage prepaid by regular
or airmail to Lessor (to the attention of "Lease Administrator") or Lessee, at
the address set out in the Schedule or, one day after it is sent by courier or
facsimile transmission if receipt is verified by the receiving party.

     14.6 Applicable Law. THIS MASTER LEASE HAS BEEN, AND EACH SCHEDULE WILL
HAVE BEEN MADE, EXECUTED AND DELIVERED IN THE STATE OF ILLINOIS AND WILL BE
GOVERNED AND CONSTRUED FOR ALL PURPOSES IN ACCORDANCE WITH THE LAWS OF THE STATE
OF ILLINOIS WITHOUT GIVING EFFECT TO CONFLICT OF LAW PROVISIONS. NO RIGHTS OR
REMEDIES REFERRED TO IN ARTICLE 2A OF THE UNIFORM COMMERCIAL CODE WILL BE
CONFERRED ON LESSEE UNLESS EXPRESSLY GRANTED IN THIS MASTER LEASE OR A SCHEDULE.

     14.7 Severability. If any one or more of the provisions of this Master
Lease or any Schedule is for any reason held invalid, illegal or unenforceable,
the remaining provisions of this Master Lease and any such Schedule will be
unimpaired, and the invalid, illegal or unenforceable provision replaced by a
mutually acceptable valid, legal and enforceable provision that is closest to
the original intention of the parties.

     14.8 Counterparts. This Master Lease and any Schedule may be executed in
any number of counterparts, each of which will be deemed an original, but all
such counterparts together constitute one and the same instrument, If Lessor
grants a security interest in all or any part of a Schedule, the Equipment or
sums payable thereunder, only that counterpart Schedule marked "Secured Party's
Original" can transfer Lessor's rights and all other counterparts will be marked
"Duplicate".

     14.9 Licensed Products. Lessee shall obtain no title to Licensed Products
which will at all times remain the property of the



owner of the Licensed Products. A license from the owner may be required and it
is Lessee's responsibility to obtain any required license before the use of the
Licensed Products. Lessee agrees to treat the Licensed Products as confidential
information of the owner, to observe all copyright restrictions, and not to
reproduce or sell the Licensed Products.

     14.10 Additional Documents. Lessee will, upon execution of this Master
Lease and as may be requested thereafter, provide Lessor with a secretary's
certificate of incumbency and authority and any other documents reasonably
requested by Lessor. Upon the execution of each Schedule with an aggregate Rent
in excess of $2,000,000, Lessee will provide Lessor with an opinion from
Lessee's counsel regarding the representations and warranties in Section 8.
Lessee will fumish, upon request, audited financial statements for the most
recent period.

     14.11 Electronic Communications. Each of the parties may communicate
with the other by electronic means under mutually agreeable terms.

     14.12 Definitions.
     Assignee - means an entity to whom Lessor has sold or assigned its rights
as owner and Lessor of Equipment.

     Attachment - means any accessory, equipment or device and the installation
thereof that does not impair the original function or use of the Equipment and
is capable of being removed without causing material damage to the Equipment and
is not an accession to the Equipment.

     Casualty Loss - means the irreparable loss or destruction of Equipment.

     Casualty Value - means the amount equal to the present value of the
aggregate Rent remaining for the balance of the current term, plus the present
value of the Fair Market Value (determined as of the expiration of the current
term) of Like Equipment computed using an interest rate equal to the rate for
Treasury Securities having a comparable term to the current term. However, if a
Casualty Value Table is attached to the relevant Schedule its terms will
control.

     Commencement Certificate - means the Lessor provided certificate which must
be signed by Lessee within ten days of the Commencement Date as requested by
Lessor.

     Commencement Date - is defined in each Schedule.

     Contaminant - means those substances which are regulated by or form the
basis of liability under any Environmental Law, including without limitation,
asbestos, polychlorinated biphenyls ("PCB"), and radioactive substances, or
other material or substance which has in the past or could in the future
constitute a health, safety or environmental hazard to any person, property or
natural resources.

     Default Costs - means reasonable attorney's fees and remarketing costs
resulting from a Lessee default or Lessor's enforcement of its remedies.

     Environmental Law - means any federal, foreign, state or local law, rule or
regulation pertaining to the protection of the environment, including, but not
limited to, the Comprehensive Environmental Response, Compensation and Liability
Act ("CERCLA") (42 U.S.C. Section 9601 et seq.), the Federal Water Pollution
Control Act (33 U.S.C. 1251 et seq.), the Resource Conservation and Recovery Act
(42 U.S.C. 6901 et seq.), the Clean Air Act (42 U.S.C. 7401 et seq.), the Toxic
Substances Control Act (15 O.S.C. 2601 et seq.), the Federal Insecticide,
Fungicide and Rodenticide Act (7 U.S.C. 1361 et seq.), and the Occupational
Safety and Health Act (10 U.S.C. 651 et seq.), as these laws have been amended
or supplemented, and any analogous foreign, state or local statutes, and the
regulations promulgated pursuant thereto.

     Equipment - means the property described on a Schedule and any replacement
for that property required or permitted by this Master Lease or a Schedule but
not including any Attachment.

     Event of Default - means the events described in Subsection 13.1.

     Fair Market Value - means the aggregate amount which would be obtainable in
an arms-length transaction between an informed



and willing buyer/user purchasing the Equipment in place for its originally
intended use and an informed and willing seller under no compulsion to sell.

     Initial Term - means the period of time beginning on the first day of the
first full Rent Interval following the Commencement Date for all items of
Equipment and continuing for the number of Rent Intervals indicated on a
Schedule.

     Installation Date - means the day on which the Equipment is installed and
qualified for a commercially available manufacturer's standard maintenance
contract or warranty coverage, if available.

     Interim Rent - means the pro-rata portion of Rent due for the period from
the Commencement Date through but not including the first day of the first full
Rent Interval included in the Initial Term.

     Licensed Products - means any software or other licensed products attached
to the Equipment.

     Like Equipment - means replacement Equipment which is lien free and of the
same model, type, configuration and manufacture as Equipment.

     Notice Period - means the time period descnbed in a Schedule during which
Lessee may give Lessor notice of the termination of the term of that Schedule.

     Overdue Rate - means the lesser of 18% per year or the maximum rate
permitted by the law of the state where the Equipment is located.

     Owner - means the owner of Equipment.

     Reconfiguration - means any change to Equipment that would upgrade or
downgrade the performance capabilities of the Equipment in any way.

     Rent - means the rent, including Interim Rent, Lessee will pay for each
item of Equipment expressed in a Schedule either as a specific amount or an
amount equal to the amount which Lessor pays for an item of Equipment multiplied
by a lease rate factor plus all other amounts due to Lessor under this Master
Lease or a Schedule.

     Rent Interval - means a full calendar month or quarter as indicated on a
Schedule.

     Schedule - means an Equipment Schedule which incorporates all of the terms
and conditions of this Master Lease and, for purposes of Section 14.8, its
associated Commencement Certificate(s).

     Secured Party - means an entity to whom Lessor has granted a security
interest in a Schedule and related Equipment for the purpose of securing a loan.

     Verification of Decontamination - means a letter from the party performing
the decontamination, stating that it is properiy licensed to perform the
decontamination and that an actual decontamination and disposal of Contaminants
was completed in accordance with the manufacturer's specifications and
procedures and all applicable governmental rules and regulations including but
not limited to all Environmental Laws.

IN WITNESS WHEREOF, the parties hereto have executed this Master Lease on or as
of th eday and year first above written.

MYRIAD GENETICS, INC                   COMDISCO LABORATORY AND SCIENTIFIC GROUP
as lesee                               A DIVISION OF COMDISCO HEALTHCARE GROUP,
                                       INC. As Lessor


By:     /s/ Jay M. Moyes               By:       /s/ Doug Berman
   ---------------------------            -----------------------------
Title:      C.F.O.                     Title:        Credit Manager
       -----------------------               --------------------------