[measure of histocompatibility at the HLA locus: peripheral blood lymphocytes from two individuals are mixed together in tissue culture for several days; lymphocytes from incompatible individuals will stimulate each other to proliferate significantly (measured by tritiated thymidine uptake) whereas those from compatible individuals will not; in the one-way MLC test, the lymphocytes from one of the individuals are inactivated thereby allowing only the untreated remaining population of cells to proliferate in response to foreign histocompatibility antigens. ( CSP )]
UMLS (NCI) C0023509 Relation/PAR: histocompatibility typing