Janko Nikolich (IMAGE) University of Arizona Health Sciences Caption Janko Nikolich, MD, PhD, is professor and head of the UArizona College of Medicine – Tucson’s Department of Immunobiology, director of the Aegis Consortium, co-director of the Arizona Center on Aging and member of the BIO5 Institute. Credit UArizona Health Sciences Usage Restrictions Credit UArizona Health Sciences 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.