What I don't understand is why, with all the hoo-hah over the underperforming (even damaging) embryonic stem cells, articles like this that show miraculous advances possible with adult stem cells, that these articles are not "Breaking News" and do not have thousands of posts here on FR. This is INCREDIBLE news!
(Scratching head)
It would be neat to fix broken hearts in place. It would be almost as neat to be able to take them out, fix them (with patient on artificial heart), then put them back in.