Brain Immune Cells, Called Microglia (IMAGE) American Institute of Physics Caption Brain immune cells, called microglia, play a critical role in protein clearance and can be a therapy target for neurodegenerative diseases. Credit Nanxia Zhao Usage Restrictions Journalists may use this image only with appropriate 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.