CefoxitinDrug Resistance, MicrobialMicrobial Sensitivity TestsDrug ResistanceDrug Resistance, BacterialAnti-Bacterial AgentsBacteroides fragilisCephalosporinsCephamycinsCefotetanCephalothinDrug Resistance, NeoplasmCefmetazolebeta-LactamasesMoxalactamDrug Resistance, MultipleDrug Resistance, Multiple, BacterialCephalosporinaseDisease ResistanceCefamandolebeta-LactamsVascular ResistanceBacteria, AnaerobicDrug Resistance, ViralOxacillinEnterobacteriaceaeBacteroidesPenicillin ResistanceCefotaximebeta-Lactam ResistanceClindamycinBacterial ProteinsBacteroides InfectionsCefoperazoneMethicillin ResistanceImipenemCephalosporin ResistanceCeftizoximeProbenecidBacterial InfectionsLactamsKlebsiella pneumoniaeEnterobacterEscherichia coliBacteriaMutationTetracycline ResistanceKlebsiellaPenicillinsProteusMetronidazolePremedicationPenicillin-Binding ProteinsPlant DiseasesStaphylococcus aureusStaphylococcusMolecular Sequence DataDNA, BacterialDisk Diffusion Antimicrobial TestsConjugation, GeneticDrug Resistance, FungalPlasmidsAirway ResistanceFusobacteriumAmpicillinPenicillinaseTicarcillinPenicillanic AcidCefazolinEnterobacteriaceae InfectionsPiperacillinAnti-Infective AgentsClavulanic AcidsGenes, BacterialThienamycinsResistance TrainingClavulanic AcidFormularies, HospitalSulbactamCefuroximeFluoroquinolonesProteus vulgarisAztreonamHospital Bed Capacity, 500 and overPhenotypeR FactorsCulture MediaMuramoylpentapeptide Carboxypeptidase