Mark J. Zylka, Ph.D. (IMAGE) University of North Carolina Health Care Caption Mark J. Zylka, Ph.D., assistant professor of cell & molecular physiology, University of North Carolina at Chapel Hill School of Medicine. Credit Randall Elmo/UNC Medical Center News Office 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.