title: I-J: a rogue's riddle.
mesh_terms: D000818:Animals; D000939:Epitopes / Q000235:genetics*; D005796:Genes; D006183:H-2 Antigens / Q000235:genetics; D051379:Mice; D008815:Mice, Inbred Strains; D010641:Phenotype; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D000939:Epitopes; D006183:H-2 Antigens