Lab Grows Heart Muscle From Skin

The stem cells - those universally capable cells, your body uses as a matter of course for repair - come in two distinct and mutually exclusive flavor:

1,. Embryonic: can do anything. Lack the control to do the right thing, but "any" thing. Today most experiments end up in uncontrolled proliferation = e.g. cancer.

2,. Adult: Takes time to learn, how to coax to do most of the things, but, at least it will not trip you up to unlimited proliferation (in plain language= cancer). Advantage is, that it is obviously is SELF, as in yourself. Repair is permanent, with no immune suppression needed.

Would you care to know, what I prefer? That is the $64thousand question for you.