Dr. G. G. Newton.
D000900:Anti-Bacterial Agents / Q000266:history*; D001414:Bacitracin / Q000302:isolation & purification; D002511:Cephalosporins / Q000032:analysis; D004739:England; D049673:History, 20th Century
D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D001414:Bacitracin