Dying Oligodendrocyte (IMAGE) Dartmouth College Caption A living-tissue model developed by Dartmouth researchers showed that a fatal trauma killed younger oligodendrocytes (blue) within 24 hours, while mature cells (yellow) took 45 days to die. Credit Robert Hill Usage Restrictions None 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.