CephalosporinsCephalosporin Resistancebeta-LactamasesAnti-Bacterial AgentsMicrobial Sensitivity TestsCephaloridineCephalosporinaseCefotaximeCephalexinCefiximebeta-LactamsPenicillinsCeftriaxoneCephalothinCefmenoximebeta-Lactam ResistanceCefotiamEnterobacteriaceaeCeftazidimeBacteriaCeftizoximeCephradineEnterobacterCefazolinKlebsiella pneumoniaeDrug Resistance, MicrobialPenicillinaseAztreonamEnterobacteriaceae InfectionsCefoxitinGram-Negative BacteriaCefamandolePenicillin ResistanceCephamycinsDrug Resistance, BacterialKlebsiellaCefaclorCefoperazoneCarbapenemsCefmetazoleCefadroxilEscherichia coliKlebsiella InfectionsMoxalactamAmpicillinDrug Resistance, Multiple, BacterialIsoelectric FocusingEnterobacter cloacaeBacterial InfectionsPenicillin GCefotetanCephaloglycinCefuroximeClavulanic AcidCross InfectionCefatrizineLactamsStructure-Activity RelationshipPenicillanic AcidGonorrheaCloxacillinNeisseria gonorrhoeaeImipenemGram-Negative Bacterial InfectionsGram-Positive BacteriaCefsulodinEscherichia coli InfectionsPenicillin-Binding ProteinsMonobactamsChemistryDrug UtilizationChemical PhenomenaThienamycinsCitrobacterHydrolysisProteusBacterial ProteinsProteus vulgarisProteus mirabilisDNA, BacterialClavulanic AcidsCitrobacter freundiiPlasmidsPiperacillinPenicillin VPseudomonas aeruginosaAminoglycosidesProvidenciaConjugation, GeneticSalmonella paratyphi AKineticsMolecular Sequence DataStreptococcus pneumoniaeFluoroquinolonesElectrophoresis, Gel, Pulsed-FieldSalmonella InfectionsDrug StabilitySulbactamCephapirinSarcina