title: Letter: Brain and thymus antigens.
mesh_terms: D000818:Animals; D001921:Brain / Q000276:immunology*; D000939:Epitopes; D006801:Humans; D006969:Hypersensitivity, Immediate; D007519:Isoantigens; D008214:Lymphocytes / Q000187:drug effects; D051379:Mice; D009103:Multiple Sclerosis / Q000276:immunology; D009494:Neurosyphilis / Q000276:immunology; D011817:Rabbits; D013949:Thymus Extracts / Q000494:pharmacology; D013950:Thymus Gland / Q000276:immunology*
chemical_list: D000939:Epitopes; D007519:Isoantigens; D013949:Thymus Extracts