Amyloid Plaques and Neurons in the Brain (IMAGE) Sanford Burnham Prebys Caption Amyloid plaques are found in the brains of people with Down syndrome and Alzheimer's disease. Credit Juan Gartner 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.