Jon Duke, M.D., Regenstrief Institute and Indiana University School of Medicine (image) Indiana University School of Medicine Share Print E-Mail Caption Jon Duke, M.D. is a Regenstrief Institute investigator and an assistant professor of medicine at the Indiana University School of Medicine. Credit Regenstrief Institute Usage Restrictions Photo credit to Regenstrief Institute Share Print E-Mail 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.