Kathryn A. O'Donnell, UTSW (IMAGE) UT Southwestern Medical Center Caption Kathryn A. O'Donnell, Ph.D. Credit UTSW 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.