Clavulanic AcidClavulanic AcidsLactamsbeta-LactamsCyclacillinAmoxicillin-Potassium Clavulanate CombinationAnti-Bacterial AgentsSuperinfectionTicarcillinAmoxicillinbeta-LactamasesSulbactamPenicillin ResistancePenicillanic AcidAminoglycosidesStreptomycesCephamycinsPenicillinsMicrobial Sensitivity TestsUreohydrolasesCephalosporinasebeta-Lactam ResistanceCyclizationCephalosporinsPenicillinaseDrug CombinationsIsoelectric FocusingRandomized Controlled Trials as TopicPiperacillinThienamycinsAmpicillinAztreonamalpha-MSHAza CompoundsDrug Therapy, CombinationHeterocyclic Compounds, 1-RingKlebsiella pneumoniaeCeftazidimeDicloxacillinPenicillin GAzlocillinMolecular Sequence DataInterleukin-1betaMuramic AcidsEnterobacteriaceaeBacterial ProteinsImipenemCarbenicillinKineticsPlasmidsOchrobactrum anthropiDrug Resistance, BacterialEscherichia coliKlebsiellaDrug SynergismCloxacillinMonobactamsPremedicationDrug Resistance, MicrobialBacteroides fragilisStereoisomerismGenes, BacterialBacterial InfectionsBacteriaMultigene FamilyAmpicillin Resistancebeta 2-MicroglobulinColorectal SurgeryCefoxitinCephalothinChromatography, High Pressure LiquidMolecular StructureCephalosporin ResistanceHydrolysisSulfadimethoxineThermotoga neapolitanaEnzyme InhibitorsCefuroximeAminationCleomeReceptors, MelanocortinProteusStructure-Activity RelationshipOtitis Media, SuppurativeCefotaximeBase SequenceKlebsiella oxytocaEnterobacter cloacaeSequence Analysis, DNAAmino Acid SequenceBacteroides Infections