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Immune response to transplantation

See 1.1 for some brief important definitions of what a graft is. Additional terms that need to be defined are;

Autograft
A graft taken from one place in the body and placed somewhere else on the body

Isograft
A graft taken from an individual and placed into a genetically identical individual. This is also termed an isogenic graft, a syngenic graft or a syngraft

Allograft
A graft taken from one individual and placed into another of the same species

Xenograft
A graft taken from one individual and placed into another of a different species

An antigen is a molecule that promotes an immune response. The antigens that are recognised as foreign on allografts are termed alloantigens. Those recognised as foreign on xenografts are termed xenoantigens



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Adrian P. Ireland