Neural stem cells (IMAGE) University of Zurich Caption Stem cells in the mouse hippocampus (in blue): With increasing age, their ability to form new neurons decreases as the amount of the nuclear protein lamin B1 (in red) drops. Credit Khadeesh bin Imtiaz, University of Zurich Usage Restrictions None License Licensed 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.