In theory, if a single mutation popped up that caused immature neurons to undergo just one extra cycle of cell division, that could double the final size of the cortex. (newscientist.com)
In the next few months, surgeons in the Chinese city of Zhengzhou will carefully drill through the skulls of people with Parkinson's disease and inject 4 million immature neurons derived from human embryonic stem cells into their brains. (scientificamerican.com)
Intriguingly, all seven play a role in cell division, the process by which immature neurons multiply in the fetal brain, before migrating to their final location. (newscientist.com)