[Alloantigens directed by the SL-A region control the mixed lymphocyte reaction in swine]

Immunizations between a pig bearing a recombined SL-A haplotype and related animals revealed serological defined antigens under the MLR region control. These antigens seemed to be carried by all types of lymphocytes so far studied, but with large quantitative differences. The blood nonadherent on nylon fiber lymphocytes carried very few antigens and platelets none at all. The data are compatible with the assumption that these newly discovered antigens are equivalent to the mouse Ia antigens.