Wei Li, Ph.D. (IMAGE) University of Pittsburgh Caption Wei Li, Ph.D., of Pitt, demonstrates a step in the process of obtaining a potential drug against COVID-19. Credit UPMC 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.