BacteriaAnti-Bacterial AgentsAntibiotic ProphylaxisMicrobial Sensitivity TestsDrug Resistance, BacterialDrug Resistance, MicrobialStreptomycesAntibiotics, AntineoplasticAminoglycosidesBacterial InfectionsGentamicinsDrug Utilizationbeta-LactamsPenicillinsEscherichia coliMagnetic Resonance SpectroscopyMolecular StructureFermentationErythromycinAmpicillinTetracyclineStaphylococcus aureusMacrolidesDrug Resistance, Multiple, BacterialCephalosporinsBacterial ProteinsGram-Positive BacteriaKanamycinAnti-Infective AgentsVancomycinChemistryPseudomonas aeruginosaStreptomycinStereoisomerismChemical PhenomenaCiprofloxacinGram-Negative BacteriaTropaeolaceaeCefazolinStaphylococcal InfectionsPenicillin GMolecular Sequence DataDrug PrescriptionsSurgical Wound InfectionLactamsMolecular ConformationClindamycinChloramphenicolModels, MolecularTobramycinDNA, BacterialNeomycinPenicillin ResistancePhysician's Practice PatternsLincomycinAzithromycinAmoxicillinNucleic Acid Conformationbeta-LactamasesPolymyxinsCulture MediaCross InfectionCephaloridineLeucomycinsOxytetracyclineStaphylococcusMicromonosporaTime FactorsCeftriaxoneThienamycins