MUKILTEO, Wash., Aug. 15, 2007 (PRIME NEWSWIRE) -- CombiMatrix Corporation announced today that its common stock began trading on the Nasdaq Capital Market at 9:30 a.m. Eastern Time, August 15, 2007, under the symbol “CBMXD.” Following an introductory period, CombiMatrix Corporation common stock will trade under the symbol “CBMX.”