Yang Xie, UT Southwestern Medical Center (IMAGE) UT Southwestern Medical Center Caption This is Dr. Yang Xie, Associate Professor of Clinical Science at UT Southwestern. Credit UT Southwestern Medical Center Usage Restrictions with source credit 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.