Images of Drug-Treated Alzheimer's Tissue (IMAGE) Columbia University Irving Medical Center Caption Rolipram activates the brain's garbage disposal system, eliminating excess Tau proteins (glowing red dots) associated with neurodegenerative diseases such as Alzheimer's. Credit Laboratory of Karen Duff/Columbia University Medical 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.