Photo from Aged Chimpanzee Brain (IMAGE) Kent State University Caption Kent State University researchers analyzed the brains of aged chimpanzees to show pathology similar to the human Alzheimer's disease brain. This image shows tau-positive neuron (black) in proximity to amyloid deposits within blood vessels (red) in an aged chimpanzee brain. Credit Kent State University Usage Restrictions Please give photo credit to Kent State University 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.