And human stem cells are these extraordinary but simple cells that can do two things: they can self-renew or make more of themselves, but they can also become specialized to make bone, liver or, crucially, nerve cells, maybe even the motor nerve cell or the myelin cell.
A humane matične stanice su iznimne ali jednostavne stanice  koje mogu dvije stvari: imaju sposobnost samoobnove i umnažanja, ali i mogu se sepecijalizirati u koštane, jetrene ili još bitnije živčane stanice, možda čak i motoneurone ili mijelinske stanice.