english: And there's lots and lots of stem  cell trials going on worldwide, and they use many different types of cells, but one common theme that seems to be coming out is that actually, very often, those cells will die once you've implanted them.
non_english: Radi se mnogo testova s matičnim ćelijama širom sveta koji koriste mnogo različitih vrsta ćelija, ali zajedničko za sve njih je da, u stvari, vrlo često ove ćelije odumiru kada ih ugradite.