Editing Organ transplantation (section)

=== Allograft and allotransplantation ===
{{Main|Allotransplantation}}

An allograft is a transplant of an organ or tissue between two genetically non-identical members of the same [[species]]. Most human tissue and organ transplants are allografts. Due to the genetic difference between the organ and the recipient, the recipient's [[immune system]] will identify the organ as foreign and attempt to destroy it, causing transplant rejection. The risk of transplant rejection can be estimated by measuring the [[Panel reactive antibody|panel-reactive antibody]] level.{{citation needed|date=November 2021}}

==== Isograft ====
An isograft is a subset of allograft in which organs or tissues are transplanted from a donor to a genetically identical recipient (such as an identical twin). Isografts are differentiated from other types of transplants because while they are anatomically identical to allografts, they do not trigger an [[immunology|immune response]].{{cn|date=March 2025}}