Doctors just blurred the line between species with a radical transplant. Could this be the key to immortality?

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WASHINGTON (AP) — Surgeons have transplanted a pig's heart into a dying man in a bid to prolong his life – only the second patient to ever undergo such an experimental feat. Two days later, the man ...

A genetically modified pig lung was transplanted into a brain-dead man and functioned for nine days, according to a newly ...

For the first time, surgeons have transplanted a kidney from a genetically modified pig into a living person, doctors in Boston said Thursday. Richard Slayman, 62, of Weymouth, Mass., who is suffering ...