Beta Amyloid Plaque (IMAGE) Salk Institute Caption Top: This is beta amyloid plaque as it appears in normally aging Alzheimer's mice. Bottom: This is tighter packed plaques in long-lived Alzheimer's mice protect against the disease. Credit Image: Courtesy of Dr. Ehud Cohen, Hebrew University–Hadassah Medical School Usage Restrictions Media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.