Cerus (CERS)

A semi-monthly base salary of $10,156.25;

Continued participation in the Company’s Bonus Plan for Senior Management of Cerus Corporation, in the cash and stock allocations set forth in the Employment Letter, and in accordance with the terms, conditions and limitations of the plan, a copy of which was filed as Exhibit 10.53 to the Company’s Quarterly Report on Form 10-Q (No. 000-21937) on May 2, 2006;

Subject to approval of the Board of Directors, and so long as Dr. Corash remains an employee of the Company in good standing, an annual stock award at the end of each calendar year (the “Stock Award”). The number of shares of stock for the Stock Award will be determined pursuant to a formula set forth in the Employment Letter; and

The base salary and Stock Award program provided in the Employment Letter will not be modified without Dr. Corash’s consent for at least one (1) year from the Effective Date, conditioned on Dr. Corash’s continued at-will employment with the Company. The combined amount of Dr. Corash’s annual compensation, including his semi-monthly base salary and the Stock Award (but excluding any compensation provided under the Bonus Plan for Senior Management), is approximately $375,000.