Organ transplantation is a medical procedure that involves transferring an organ from one person to another. This can be done to replace a damaged or failing organ, such as the heart, kidney, or liver. Donor organs can come from living donors or deceased individuals who have consented to donate their organs. The process begins with matching the donor organ to the recipient to reduce the risk of rejection. Once a match is found, the surgery is performed to implant the organ. After transplantation, patients typically require lifelong medication to help their bodies accept the new organ and prevent rejection.