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An organ transplant is the moving of an organ from one body to another, or from a donor site on the patient's own body, for the purpose of replacing the recipient's damaged or absent organ.
All of them, that's why they're in the organ system in the first place,except for the appendix
Eye for an eye, tooth for a tooth. It's from the bible. It means revenge.
Eye Transplantation is the technique of replcing eyes of one Person to Another person.