DANVERS, Mass.--(BUSINESS WIRE)--June 6, 2006--Cell Signaling Technology, Inc. (CST), announced today that it has entered into a new partnership agreement with Bio-Rad Laboratories, Inc. (AMEX: BIO - News and BIOb - News), a multinational manufacturer and distributor of life science research products and clinical diagnostics. Under the new agreement, CST will develop antibodies for kinase activation and protein phosphorylation assays that will be commercialized in Bio-Rad’s multiplex bead-based assays for the Bio-Plex® suspension array system.