Astrocytes (image) Society for Neuroscience Share Print E-Mail Caption Astrocytes (pictured in green) help to support blood vessels (red) that act as the blood‑brain barrier ‑ a network that keeps potentially harmful chemicals and toxins out of the brain. This image shows the close interaction between the cells in the human brain. Credit Reprinted with permission: Eugenin, et al. The Journal of Neuroscience 2011. Usage Restrictions Usage Restrictions: For reporters, free use with appropriate credit line. All others, please contact The Journal of Neuroscience. Share Print E-Mail 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.