What is a transplantation of liver ?
Answer:
Transplantation of the liver or most other organs is done by surgeons.
You have someone who have died and has agreed to donate their organs to assist others, then when another personality has a diseased liver or organ is is dying, the alien lived is transplanted; and gives the individual a second chance at go.
Liver transplantation is surgery to remove a diseased liver and replace it with a untried one.