Collaboration Agreements and Government Contract

9 Months Ended

Sep. 30, 2011

Collaboration Agreements and Government Contract

Collaboration Agreements and Government Contract

3.             Collaboration Agreements and Government Contract

We are a party to several material collaborative agreements and other contracts as fully described in Note 2 of our Annual Report on Form 10-K for the year ended December 31, 2010 (“Annual Report”).  There have not been any material changes to any of these agreements during 2011 that require disclosure.  The accounting policies related to each of these contracts, including material impact on our financial statements, is included above under the “Revenue Recognition” section of Note 2, Significant Accounting Policies.