Donor Perspectives on Kidney Transplantation

Two kidneys that are perfectly matched from a donor perspective. They're the same age they have been exposed to the exact same environment, the same medical conditions. If sometimes one kidney was accepted because doctors thought it was usable, and the other kidney was rejected, that might suggest that the kidney that was rejected was actually usable. But sumet was still sceptical. How often could this possibly be happening, as mentors were supposed to encourage our junior faculty? So i said, ok, let's try it. I don't expect to fihd anything, but let's look.