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Operating Lease

6 Months Ended

Jun. 30, 2011

8. Operating Lease

The Company leases its South San Francisco, California, facilities under a non-cancelable operating lease. Future minimum lease payments under this lease, exclusive of executory costs, at June 30, 2011, were as follows:

(in thousands)	Minimum Lease Commitments
Years ending December 31:
Remainder of 2011	$	2,229
2012	5,429
2013	5,029
2014	4,859
2015	5,005
Thereafter	23,962
Total	$	46,513

- Definition

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

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