DURHAM, NC--(Marketwire - December 18, 2007) - Aldagen, Inc., a biotechnology company advancing a pipeline of clinical-stage regenerative therapies, today announced that Laurence Keller, MD has been appointed as Chief Medical Officer (CMO). Dr. Keller is a board-certified pediatric cardiologist and brings to Aldagen significant experience in leading product development efforts for a broad range of indications.