a graft of tissue or an organ taken from an individual of the same species as the recipient but with different hereditary factors; homograft
See allograft in American Heritage Dictionary 4
(ălˈə-grăftˌ)
noun
A graft of tissue obtained from a donor of the same species as, but with a different genetic make-up from, the recipient, as a tissue transplant between two humans. Also called homograft.