PALO ALTO, Calif.--(BUSINESS WIRE)--StemCells, Inc. (NASDAQ:STEM) announced today that it has closed the acquisition of substantially all of the operating assets and liabilities of Stem Cell Sciences Plc (SCS) for 2,650,000 shares of StemCells common stock and approximately $700,000 in cash. The shareholders of SCS approved the transaction at an extraordinary general meeting on Friday, March 27, 2009, with approximately 99% of the votes cast voting in favor of the transaction.