Desplats Cell Metabolism (IMAGE) University of California - San Diego Caption This confocal microscopy image shows amyloid plaques (blue and red) in the brain of a mouse. The accumulation of amyloid plaques is the most well-documented biochemical hallmark of Alzheimer’s disease. Credit UC San Diego Health Sciences Usage Restrictions Use photo credit License Original 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.