New Class of Alzheimer's Drug (IMAGE) University of Pennsylvania School of Medicine Caption Microtubule (arrows) density in optic nerve of tau mice with EpoD treatment (right) is significantly higher compared to optic nerve in untreated (left) mice. Credit Bin Zhang, MD, PhD, University of Pennsylvania School of Medicine 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.