Paul Lieberman, The Wistar Institute (IMAGE) The Wistar Institute Caption Paul Lieberman, Ph.D., is professor and program leader of the Gene Expression and Regulation program, director of the Center for Chemical Biology and Translational Medicine, and the Hilary Koprowski, M.D., Endowed Professor at The Wistar Institute. Credit The Wistar Institute Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.