[AMERICAN EXECUTIVE CENTERS LETTERHEAD]
LEASE AND SERVICE AGREEMENT
This Lease is made on November 27, 2001, between American Executive Centers, Inc. (“AEC”) a Pennsylvania corporation,
and Duska Scientific Co., a corporation (corporation/partnership/sole proprietorship) (“Tenant”) in consideration of the
performance of the covenants contained herein and intending to be legally bound, the parties hereto agree as follows:
1. Leased Premises : A floor plan of AEC’s leased premises at Two Bala Plaza is attached as Exhibit A. Subject to the terms
and conditions set forth in this Agreement, AEC agrees to Lease and Tenant agrees to rent:
(a) On an exclusive basis, office number 71.
(b) On a non-exclusive (shared) basis, all other common areas designated on the floor plan.
(c) On a non-exclusive basis, the services described in Exhibits B-1 and B-2.
2. Use : The leased premises may be used by the Tenant as an officer for general business use and no other purpose.
Tenant acknowledges that AEC leases the premises pursuant to a lease with its landlord and that this lease is subject and
subordinate thereto. Tenant will be provided with sixty days’ written notice regarding any changes in AEC’s lease status with
its landlord. A copy of said lease is available at landlord’s office for inspection and copying by Tenant. Tenant agrees to
comply with all rules and regulations established for the building from time to time and to observe all terms and conditions of
said Lease applicable to the premises. The Tenant will not offer any service to other Tenants of AEC which AEC offers. AEC
reserves the right by written notice to the Tenant to add or change any rule or regulation at any time when in AEC’s judgment it
is necessary for the best interests of its Tenants or to comply with AEC’s lease in the building. AEC has the right to modify the
non-exclusive areas of the leased premises. The Tenant will not alter any lock on any door, nor make any alterations to the