CefamandoleCephalosporinsMandelic AcidsCephalothinMonobactamsMicrobial Sensitivity TestsCefazolinCefoxitinAnti-Bacterial Agentsbeta-LactamasesCephalosporinaseEnterobacteriaceaeCephapirinbeta-LactamsCefoperazoneCefuroximeDrug Resistance, MicrobialEnterobacterCeftazidimeTobramycinBacteriaPenicillin ResistanceAmpicillinCefonicidPseudomonas aeruginosaCephaloridineCefotaximeHalf-LifeMethicillinPseudomonas InfectionsCarbenicillinEscherichia coliCephamycinsMoxalactamCephalexinPremedicationTicarcillinEnterobacteriaceae InfectionsPenicillinsSpecies SpecificityGentamicinsPenicillinaseHypoprothrombinemiasStaphylococcusGram-Negative Aerobic Bacteriabeta-Lactam ResistanceBacterial InfectionsKineticsVancomycinCulture MediaGram-Negative BacteriaProteusSequence Analysis, DNAKlebsiella pneumoniaeLactamsSarcinaStaphylococcus aureusAminoglycosidesAmikacinImipenemBileInjections, IntramuscularGenes, BacterialStaphylococcus epidermidisDNA, BacterialAzlocillinRNA, Ribosomal, 16SHaemophilus influenzaeCefaclorPlasmidsKlebsiella InfectionsIsoelectric FocusingClavulanic AcidsEscherichia coli InfectionsPiperacillinMice, Inbred StrainsRabbits