BioTime, Inc. is a biotechnology company focused on the emerging field of regenerative medicine. Its commercial strategy is focused on its line of research products, such as ACTCellerate cell lines and associated ESpan culture media, HyStem hydrogels, human embryonic stem (hES) cell lines, and royalties from Hextend. Its focus is to provide regenerative therapies for age-related degenerative diseases. In January 2011, the Company acquired the assets of Cell Targeting, Inc. (CTI). On March 21, 2011, the Company acquired Glycosan BioSystems, Inc. (Glycosan). In August 2011, four hES cell lines (ESI-035, ESI-049, ESI-051 and ESI-053) developed by its subsidiary ES Cell International (ESI) were approved by the National Institutes of Health (NIH) for inclusion in the NIH Human Embryonic Stem Cell Registry. In May 2012, the Company acquired XenneX, Inc., through a merger of XenneX into LifeMap Sciences. In September 2012, it formed a wholly owned subsidiary, BioTime Acquisition Corporation.