Pfizer Branches Out with Stem Cell Therapy Investment

With each passing day, old-line drug company Pfizer (PFE), the name behind cholesterol-lowering drug Lipitor and erectile-dysfunction treatment Viagra, is acting increasingly like a young biotech firm. The latest development? New York-based Pfizer is licensing a new stem cell therapy for inflammatory bowel disease biotech firm Athersys (ATHX), the Cleveland, Ohio-based company said.