Histocompatibility Testing

**Definition:** Identification of the major histocompatibility antigens of transplant DONORS and potential recipients, usually by serological tests. Donor and recipient pairs should be of identical ABO blood group, and in addition should be matched as closely as possible for HISTOCOMPATIBILITY ANTIGENS in order to minimize the likelihood of allograft rejection. (King, Dictionary of Genetics, 4th ed)

**Tree numbers:** - E01.370.225.812.385 - E05.200.812.385 - E05.478.594.385

**Synonyms:** - Tissue Typing - Crossmatching, Tissue