CephalosporinsProteus vulgarisMicrobial Sensitivity Testsbeta-LactamasesAnti-Bacterial AgentsBacteriaCephalosporin ResistanceCephaloridineCephalosporinaseCefotaximeCephalexinCefiximebeta-LactamsPenicillinsCeftriaxoneCephalothinCefmenoximebeta-Lactam ResistanceCefotiamEnterobacteriaceaeCeftazidimeCeftizoximeCephradineEnterobacterCefazolinKlebsiella pneumoniaeDrug Resistance, MicrobialPenicillinaseAztreonamEnterobacteriaceae InfectionsCefoxitinGram-Negative BacteriaCefamandolePenicillin ResistanceCephamycinsDrug Resistance, BacterialKlebsiellaCefaclorCefoperazoneCarbapenemsCefmetazoleCefadroxilKlebsiella InfectionsMoxalactamAmpicillinEscherichia coliDrug Resistance, Multiple, BacterialIsoelectric FocusingEnterobacter cloacaeCefotetanPenicillin GBacterial InfectionsCephaloglycinCefuroximeClavulanic AcidCross InfectionCefatrizineLactamsPenicillanic AcidCloxacillinGonorrheaStructure-Activity RelationshipNeisseria gonorrhoeaeImipenemCefsulodinGram-Positive BacteriaGram-Negative Bacterial InfectionsPenicillin-Binding ProteinsMonobactamsEscherichia coli InfectionsDrug UtilizationChemistryChemical PhenomenaCitrobacterThienamycinsHydrolysisProteusProteus mirabilisClavulanic AcidsCitrobacter freundiiBacterial ProteinsPenicillin VPiperacillinProvidenciaAminoglycosidesPseudomonas aeruginosaDNA, BacterialPlasmidsConjugation, GeneticSalmonella paratyphi AStreptococcus pneumoniaeFluoroquinolonesDrug StabilitySulbactamCephapirinKineticsElectrophoresis, Gel, Pulsed-FieldSarcinaMuramoylpentapeptide CarboxypeptidaseSalmonella Infections