Artist Rendering, Amyloid Plaques (IMAGE) University of California - San Diego Caption In this artist's rendering, amyloid plaques are interspersed among neurons. These aggregates of misfolded proteins disrupt and kill brain cells, and are a hallmark of Alzheimer's disease. Credit National Institute of Aging Usage Restrictions Use photo credit 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.