PALO ALTO, Calif., Feb. 16, 2010 (GLOBE NEWSWIRE) -- StemCells, Inc. (Nasdaq:STEM - News) announced today the launch of GS2-M™, a new cell culture medium that enables the derivation and long-term maintenance of true (germline competent) mouse induced pluripotent stem (iPS) cells. GS2-M, the latest addition to the Company’s growing SC Proven® line of specialty cell culture products, has been shown to increase the efficiency of reprogramming ‘pre-iPS’ cells to derive fully pluripotent stem cells, and to maintain mouse iPS cells in a definitive pluripotent state in long-term culture.1,2