A brief excerpt from a YouTube talk by Robert Whitfield MD explaining that successful tissue transplants require connecting an artery (to bring blood in) and a vein (to drain blood), using an analogy of coffee stirrers; he notes Joseph Murray won a Nobel for transplanting a kidney between identical twins and that most subsequent transplants require immunosuppression.
What does that do? So that connects the blood vessels. So think of the coffee stirrers. One's artery, one's a vein. And when you do a transplant of tissue, you have to have an artery to take the blood flow in and a vein to bring it out. Otherwise it fails. And so the last surgeon to win a Nobel Prize was Joseph Murray. He showed that you could transplant a kidney in a Siamese twin. So that works because your immune system is identical in those two people. And then out of that, everything afterwards requires some level of immunosuppression.
