title: Mechanisms of resistance to cephalosporins in ampicillin-resistant Escherichia coli.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D002506:Cephalexin / Q000494:pharmacology; D002509:Cephaloridine / Q000494:pharmacology; D002511:Cephalosporins / Q000494:pharmacology*; D002512:Cephalothin / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects* / Q000201:enzymology; D008826:Microbial Sensitivity Tests; D010403:Penicillin Resistance; D010405:Penicillinase / Q000032:analysis; D013440:Sulfides / Q000494:pharmacology; D013777:Tetrazoles / Q000494:pharmacology; D013830:Thiadiazoles / Q000494:pharmacology
chemical_list: D002511:Cephalosporins; D013440:Sulfides; D013777:Tetrazoles; D013830:Thiadiazoles; D000667:Ampicillin; D010405:Penicillinase; D002509:Cephaloridine; D002506:Cephalexin; D002512:Cephalothin