Cerus Corporation announces the following Webcast:

WHAT: Third Quarter Financial Results Conference Call 
WHEN: October 31, 2002 @ 4:30 p.m. EST WHERE:http://www.firstcallevents.com/service/ajwz367347493gf12.html 
HOW: Live over the Internet -- Simply log on to the web at the address above. CONTACT: Lisa Luttinger Corporate Communications 925-288-6036 lisa_luttinger@cerus.com Fax: 925-288-0192 

If you are unable to participate during the live webcast, the call will be archived at http://www.cerus.com/.

About Cerus Corporation

Cerus Corporation is building on its leading position in the biopharmaceutical industry by developing medical systems and therapeutics to provide safer and more effective options to patients. The company is developing products based on its proprietary Helinx(R) technology for controlling biological replication. Cerus' most advanced programs are focused on systems to enhance the safety of the world's blood supply. The INTERCEPT Blood System, based on the company's Helinx technology, is designed to inactivate viruses, bacteria, other pathogens and white blood cells. In collaboration with its partner, Baxter International, the company has received a CE Mark for the INTERCEPT Blood System for platelets, and has begun the regulatory submission process in the United States. The companies are preparing to begin the U.S. regulatory submission process for the INTERCEPT Blood System for plasma, which will be followed by a CE Mark application for this product. The INTERCEPT Red Blood Cell is in Phase III clinical trial stage. The Concord, California-based company also is pursuing therapeutic applications of Helinx technology to treat and prevent serious diseases.

(Minimum Requirements to listen to broadcast: The Windows Media Player software, downloadable free from http://www.microsoft.com/windows/windowsmedia/EN/default.asp and at least a 28.8 kbps connection to the Internet. If you experience problems listening to the broadcast, send an email to webcastsupport@tfprn.com.)

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CONTACT: Lisa Luttinger, Corporate Communications of Cerus Corporation, +1-925-288-6036, or fax, +1-925-288-0192, or lisa_luttinger@cerus.com

Web site: http://www.cerus.com/