Astrocytes (IMAGE) University of Gothenburg Caption Astrocytes are cells that control many of the nerve cells' functions in both the healthy and the diseased brain. Credit Photo: University of Gothenburg. Usage Restrictions For editorial use, no commercial use. 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.