Red light, green light: Simultaneous stop and go signals on stem...

Virtually all cells in a person's body have the same genes. But in each different type of cell - fat, nerve, muscle, liver, etc.

https://scopeblog.stanford.edu/2013/06/27/red-light-green-light-simultaneous-stop-and-go-signals-on-stem-cells-genes-may-enable-fast-activation-provide-aging-clock/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+stanford%2Fscope+%28SCOPE%29