Spontaneous mutant with loss of beta-lactamase in Aerobacter cloacae.
D002511:Cephalosporins / Q000494:pharmacology; D004754:Enterobacter / Q000187:drug effects; D005827:Genetics, Microbial; D009154:Mutation; D010400:Penicillin G / Q000494:pharmacology; D010403:Penicillin Resistance; D010405:Penicillinase / Q000096:biosynthesis*
D002511:Cephalosporins; D010405:Penicillinase; D010400:Penicillin G