Aleksandar Kostic, Joslin Diabetes Center (IMAGE) Joslin Diabetes Center Caption This is Aleksandar Kostic, Ph.D., Assistant Investigator at the Joslin Diabetes Center and member of the Harvard Medical School faculty. Credit Joslin Diabetes Center 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.