Antibiotics issue; introduction.
D000900:Anti-Bacterial Agents; D000904:Antibiotics, Antitubercular; D003879:Dermatologic Agents; D010406:Penicillins / Q000266:history*
D000900:Anti-Bacterial Agents; D000904:Antibiotics, Antitubercular; D003879:Dermatologic Agents; D010406:Penicillins
PENICILLIN/history