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A graft transferred from an animal of one species to one of another species. Compare: allograft, autograft, isograft.
xenograft/xeno·graft/ (zen´o-graft) a graft of tissue transplanted between animals of different species; it may be concordant, occurring between closely related species, in which the recipient lacks natural antibodies specific for the transplanted tissue, or discordant, occurring between members of distantly related species, in which the recipient has natural antibodies specific for the transplanted tissue.
Etymology: Gk, xenos + graphion, stylus
tissue from another species used as a temporary graft in certain cases, as in treating a severely burned patient when sufficient tissue from the patient or from a tissue bank is not available. It is quickly rejected but provides a cover for the burn for the first few days, reducing fluid loss from the open wound. Also called heterograft. Compare allograft, autograft, isograft. See also graft.
xenograftA tissue graft taken from an animal of a different species from the host. Xenografts include pig heart valves and pig kidneys. Catgut, made from sheep intestine, is not a graft as it is intended to be absorbed. Also known as heterograft. From Greek xenos , a stranger or guest.
Tissue that is transplanted from one species to another (e.g., pigs to humans).
Mentioned in: Skin Grafting
a graft of tissue or organ transplanted between animals of different species; a heterograft.