Brain Diseases' Spread Linked to Receptor (IMAGE) Washington University School of Medicine Caption An electron micrograph shows clumps of corrupted tau protein outside a nerve cell. Scientists have identified a receptor that lets these clumps into the cell, where the corruption can spread. Blocking this receptor with drugs may help treat Alzheimer's, Parkinson's and other disorders. Credit <i>PNAS</i> Usage Restrictions Please credit <i>PNAS</i>. 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.