title: ESBL-producing organisms and cephalosporins.
authors.forename: P
authors.initials: P
authors.lastname: Derby
authors.forename: J
authors.initials: J
authors.lastname: Berens
mesh_terms: D018550:Cephalosporin Resistance; D006090:Gram-Negative Bacteria / Q000201:enzymology*; D006801:Humans; D008826:Microbial Sensitivity Tests; D001618:beta-Lactamases / Q000096:biosynthesis* / Q000502:physiology
chemical_list: D001618:beta-Lactamases