title: Ia antigens in wild populations of rats.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D005796:Genes; D008040:Genetic Linkage; D006649:Histocompatibility Antigens / Q000235:genetics; D007959:Lymphocyte Culture Test, Mixed; D008285:Major Histocompatibility Complex; D011110:Polymorphism, Genetic; D051381:Rats / Q000276:immunology*; D011919:Rats, Inbred Strains / Q000276:immunology*
chemical_list: D006649:Histocompatibility Antigens