Philip J. Barr, PhD, Founder and Chief Scientific Officer, is the former Director of Molecular Biology at Chiron Corporation. Prior to founding Arriva in 1997, Dr. Barr held several senior management and consultancy positions in the biotechnology industry. He co-edited the first book on yeast genetic engineering and has co-authored over 180 peer-reviewed articles and book chapters. Dr. Barr is an inventor on over 50 issued U.S. patents, and is an adjunct professor of Pharmaceutical Chemistry at the University of California, San Francisco.