Yang Liu, Ph.D. (IMAGE) University of Pittsburgh Caption Yang Liu, Ph.D., associate professor of medicine and bioengineering at the University of Pittsburgh Credit UPMC Usage Restrictions For use with embargoed release License Original 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.