San Diego, CA., April 10, 2007 -- ACEA Biosciences, Inc., a San Diego-based developer of advanced microelectronic systems for cell based assays, announced today that it has been awarded a contract from the U. S. Environmental Protection Agency in support of the Agency’s ToxCast Program which is designed to identify toxic and potentially toxic environmental chemicals. In the contract award, which may run for up to 5 years, ACEA’s RT-CES® System will be used to analyze and classify as many as 10,000 specific chemicals in the ToxCast Chemical library. The specific dollar value of the award will depend on the actual number of compounds tested during the contract period.