Microscopy images of human brain sections (IMAGE) Wyss Center for Bio and Neuroengineering Caption Microscopy images of human brain sections showing the amyloid precursor protein (APP) in brown evenly distributed in a healthy control brain (A and B) and abnormally clustered in a brain with Alzheimer's disease (C and D). In control brains, APP is mainly found in the cell bodies of neurons (A, B) but in Alzheimer's disease patients, APP is mainly aggregated outside the cell bodies (C, D). Credit © Gael Barthet Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.