Zellen (IMAGE) University of Bonn Caption Bei gesunden Mäusen schmiegt sich das isolierende Myelin (schwarz) als kompakte Schicht eng um die Nervenfasern, die Axone. Credit © AG Prof. Kürten/Universität Bonn Usage Restrictions Please use this image only in connection with the press release. 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.