title: Immunity and hypersensitivity.
mesh_terms: D000818:Animals; D001500:BCG Vaccine / Q000276:immunology*; D006168:Guinea Pigs; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D008222:Lymphokines / Q000276:immunology; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D001500:BCG Vaccine; D008222:Lymphokines