Hidden contacts with penicillin.
D000900:Anti-Bacterial Agents; D004342:Drug Hypersensitivity; D006801:Humans; D006967:Hypersensitivity / Q000209:etiology*; D010406:Penicillins / Q000633:toxicity*
D000900:Anti-Bacterial Agents; D010406:Penicillins
ALLERGY/etiology; PENICILLIN/toxicology