Brain cell insulators are short-timers
Limited myelin production time may make it harder to repair nerve casings damaged by multiple sclerosis
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/06/ts_58062.jpg?fit=860%2C460&ssl=1)
SHORT-TIMER CELLS Cells called oligodendrocytes (shown in green) only spend five hours insulating nerve fibers (purple) with a waxy coating of myelin in the zebrafish central nervous system.
T. Czopka et al/Developmental Cell 2013