oh, I see, so I guess it's correct to say that this is the first "real" transplant and previous attempts were experiments. Also, apparently, transplants of hea

oh, I see, so I guess it's correct to say that this is the first "real" transplant and previous attempts were experiments. Also, apparently, transplants of heart valves from pigs have been around for a while, see this https://news.ycombinator.com/item?id=29883619 https://news.ycombinator.com/item?id=29883619