BioVision offers several fluorescent proteins including the Enhanced green, red, yellow, blue, cyan, and Cherry fluorescence protein (EGFP, RFP, YFP, BFP, CFP, mCherry), These bright fluorescent proteins are useful in various cell biology applications. Besides the fluorescent proteins, the company also offers polyclonal antibodies against these proteins as well as quantification kits. BioVision, Inc., 650-428-0236, www.biovision.com