What happens if a liver transplant is rejected?
Rejection is a normal reaction of the body to a foreign object. When a new liver is placed in a person’s body, the body sees the transplanted organ as a threat and tries to attack it. The immune system makes antibodies to try to kill the new organ, not realizing that the transplanted liver is beneficial

Why not use stem cells to repair the liver instead of risky surgery?
Details –  https://nbscience.com/nbs-stem-cells-clinic/