Warrant(s)

Warrant(s). The Class E Warrant and the Class F Warrant, substantially in the form attached hereto as Exhibit C and Exhibit D, respectively.

Warrant(s). Means (i) the Warrants to Purchase Stock dated June 7, 2007, December 8, 2008 and February 8, 2010, issued by the Company to Silicon Valley Bank, (ii) the Warrant issued to Comerica Bank dated February 6, 2008 and (iii) the Warrant issued to Venture Lending & Leasing IV, LLC dated December 7, 2006.

Warrant(s). The warrants to purchase Common Stock issued by the Company on the Closing Date, including any warrant(s) issued in replacement of any original warrant

Warrant(s). The warrants to purchase shares of Common Stock issued to the Investors pursuant to the Note and Warrant Purchase Agreement, the form of which is attached to the Note and Warrant Purchase Agreement as Exhibit B.

Warrant(s). Those warrants to purchase shares of Common Stock of the Company expiring five years from the Effective Date

Warrant(s). Means the Warrants issued pursuant to the Purchase Agreement. The Placement Agent and/or its designees also received placement agent warrants as compensation for services rendered in connection with the transactions set forth in the Purchase Agreement, which warrants shall also constitute Warrants for all purposes hereunder

Warrant(s). Collectively the Series B Warrants, Series D Warrants and Series E Warrants

Warrant(s). Means the warrants to purchase an aggregate of 723,627 shares of Common Stock granted to the Original Investors prior to the date of the First Amended and Restated Registration Rights Agreement.

Warrant(s). Warrants to purchase Common Stock of the Company at a price of $0.125 per share, in the form attached hereto as Exhibit D

Warrant(s). Shall have the meaning set forth in the Background section