PITTSBURGH--(BUSINESS WIRE)--Cellumen, Inc., a discovery toxicology company, today announced that industry veteran and former Pfizer executive Dr. Jack A. Reynolds has joined Cellumen’s board of directors. With more than 30 years of experience in the pharmaceutical industry, Dr. Reynolds is founder and Principal at JAReynolds & Associates, which is focused on defining new paradigms for improving safety testing and decision making in the pharmaceutical industry.