Penicilloylated protein contaminating 6-amino-penicillanic acid and benzylpenicillin.
D000667:Ampicillin / Q000009:adverse effects; D000818:Animals; D000917:Antibody Formation; D004342:Drug Hypersensitivity / Q000209:etiology*; D006168:Guinea Pigs; D007118:Immunoassay; D010400:Penicillin G / Q000009:adverse effects; D010406:Penicillins / Q000032:analysis*; D011506:Proteins / Q000032:analysis*
D010406:Penicillins; D011506:Proteins; D000667:Ampicillin; D010400:Penicillin G