Transplants of skin from one person to another is limited by [[tissue rejection]] caused by the [[immune system]]. As with organ transplants, tests are done to find a donor who is "compatible" with the host. [[Identical twins]] make the perfect donors for each other because they are [[genetically]] identical. | Transplants of skin from one person to another is limited by [[tissue rejection]] caused by the [[immune system]]. As with organ transplants, tests are done to find a donor who is "compatible" with the host. [[Identical twins]] make the perfect donors for each other because they are [[genetically]] identical. |