Microscope image (IMAGE) Universitatsklinikum Bonn Caption In the microscope image, astrocytes are stained green and immune cells are stained red. The basement membranes of the vessels are seen in white. Credit University of Münster / University Hospital Bonn (UKB) Usage Restrictions The reprint in connection with the news is free of charge, the indicated author of the picture must be named. License Original 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.