CefamandoleMandelic AcidsCephalosporinsCephalothinCefazolinMicrobial Sensitivity TestsCefoxitinDisease SusceptibilityAnti-Bacterial AgentsCephapirinEnterobacteriaceaeCephalosporinaseDrug Resistance, MicrobialPenicillin ResistanceCefuroximeCefonicidAmpicillinCephaloridineBacteriaGenetic Predisposition to DiseaseMethicillinCarbenicillinCephamycinsSpecies SpecificityStaphylococcusCephalexinMoxalactamCefoperazonePremedicationStaphylococcus aureusEnterobacterGenotypeTobramycinCulture MediaHypoprothrombinemiasSequence Analysis, DNAProteusPenicillinsbeta-LactamasesPenicillinaseHalf-LifeCefotaximeEscherichia coliMice, Inbred StrainsHaemophilus influenzaeSarcinaVancomycinStaphylococcus epidermidisMutationTicarcillinPhenotypebeta-LactamsDrug Resistance, BacterialGentamicinsBacterial Typing TechniquesOxacillinCefaclorRNA, Ribosomal, 16SBacterial InfectionsTime FactorsStaphylococcal InfectionsLactamsGram-Negative Aerobic BacteriaChloramphenicolGenes, BacterialDNA, RibosomalKineticsCeftriaxoneVirulencePolymorphism, Single NucleotidePolymerase Chain Reaction