MonobactamsInjectionsAnti-Bacterial Agentsbeta-LactamasesCeftazidimeMicrobial Sensitivity Testsbeta-LactamsCephalosporinsInjections, IntramuscularPseudomonas aeruginosaPseudomonas InfectionsInjections, Intravenousbeta-Lactam ResistanceCefoperazoneGram-Negative BacteriaKlebsiella pneumoniaeEnterobacterAmikacinInjections, IntralesionalInjections, SubcutaneousInjections, Intra-ArticularAzlocillinEnterobacteriaceaeImipenemEnterobacteriaceae InfectionsCephalosporinaseTobramycinPiperacillinIsoelectric FocusingDrug Resistance, MicrobialSkin Diseases, BacterialCefotaximeKlebsiella InfectionsClavulanic AcidInjections, IntraperitonealCarbapenemsThienamycinsKlebsiellaAzabicyclo CompoundsCitrobacterEscherichia coliInjections, IntradermalInjections, EpiduralInjections, IntraventricularAmdinocillinKineticsHalf-LifeSerratia marcescensGentamicinsInjections, Intra-ArterialCephalosporin ResistanceCefoxitinSerratia InfectionsRabbitsIntravitreal InjectionsDrug Therapy, CombinationInjections, SpinalEnterobacter cloacaeBacterial InfectionsTime FactorsDrug Resistance, Multiple, BacterialDrug Resistance, BacterialTicarcillinInjections, JetCystic FibrosisCefuroximeInjections, IntraocularProteus vulgarisPenicillinsBacteriaGram-Negative Aerobic BacteriaVancomycinGram-Positive BacteriaChromatography, High Pressure LiquidPlasmidsClavulanic AcidsAcinetobacterKanamycinDose-Response Relationship, DrugAminoglycosidesConjugation, GeneticProteus mirabilisRats, Sprague-DawleyFlow Injection AnalysisLactamsMolecular Sequence DataMicroinjectionsMacaca fascicularisBileDrug SynergismHydrolysisGram-Negative Bacterial InfectionsSalmonella paratyphi ADNA, BacterialFecesPenicillanic AcidTissue DistributionMuramoylpentapeptide CarboxypeptidaseCiprofloxacinPenicillin-Binding Proteins