Microbiological studies on a new broad-spectrum penicilin, "Penbritin".
D000667:Ampicillin; D001419:Bacteria / Q000494:pharmacology*; D010406:Penicillins / Q000494:pharmacology*
D010406:Penicillins; D000667:Ampicillin
BACTERIA/pharmacology; PENICILLIN/pharmacology