PALO ALTO, Calif., Jan. 19, 2011 (GLOBE NEWSWIRE) -- StemCells, Inc. (Nasdaq:STEM) announced today the launch of STEM24™ and STEM133™, two new antibody reagents that have utility for the isolation and detection of a range of different human cell types. These antibodies are the latest additions to the Company’s SC Proven® portfolio of innovative research products.