title: [Drug hypersensitivity (3). Immune response to penicillin impurity in aminobenzylpenicillin-sensitized animals].
mesh_terms: D000667:Ampicillin / Q000276:immunology*; D000818:Animals; D000917:Antibody Formation; D004340:Drug Contamination; D004342:Drug Hypersensitivity / Q000276:immunology*; D051381:Rats
chemical_list: D000667:Ampicillin