Brain Stem Cells (image) Johannes Gutenberg Universitaet Mainz Share Print E-Mail Caption Neural stem cells (red) interact with their niche glial cells (green) to remain in quiescence. Credit photo/©: AG Berger Usage Restrictions This image may only be used in connection with the press release "Brain stem cell quiescence needs to be actively maintained in Drosophila," issued by Johannes Gutenberg University Mainz on April 20, 2016. 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.