Studies in penicillin hypersensitivity.  IV.  Antigenic properties of altered procaine penicillin.
D004342:Drug Hypersensitivity; D064420:Drug-Related Side Effects and Adverse Reactions; D006967:Hypersensitivity / Q000209:etiology*; D007154:Immune System Diseases; D010402:Penicillin G Procaine; D010406:Penicillins / Q000031:analogs & derivatives
D010406:Penicillins; D010402:Penicillin G Procaine
ALLERGY/etiology and pathogenesis; PENICILLIN/related compounds