Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
The Board of Directors
Vical Incorporated:
We consent to the use of our report dated February 6, 2004, with respect to the statements of operations, stockholders’ equity, and cash flows of Vical Incorporated for the year ended December 31, 2003, incorporated by reference herein and to the reference of our firm under the heading “Experts” in the prospectus.
/s/ KPMG LLP
San Diego, California
January 12, 2007
