Administration, OralAnti-Bacterial AgentsAntibiotic ProphylaxisMicrobial Sensitivity TestsDrug Resistance, BacterialDrug Resistance, MicrobialAntibiotics, AntineoplasticStreptomycesAminoglycosidesDrug Administration ScheduleInjections, IntravenousTime FactorsBacterial InfectionsBacteriaDose-Response Relationship, DrugGentamicinsUnited States Food and Drug AdministrationDrug Administration RoutesDrug Utilizationbeta-LactamsPenicillinsRats, Sprague-DawleyErythromycinEscherichia coliAmpicillinCephalosporinsFermentationTetracyclineAnti-Infective AgentsStaphylococcus aureusMacrolidesDrug Resistance, Multiple, BacterialRats, WistarTreatment OutcomeDisease Models, AnimalAdministration, IntranasalKanamycinBacterial ProteinsVancomycinCiprofloxacinInjections, IntraperitonealGram-Positive BacteriaPseudomonas aeruginosaStreptomycinCefazolinDrug Therapy, CombinationGram-Negative BacteriaStaphylococcal InfectionsAdministration, TopicalDrug PrescriptionsSurgical Wound InfectionInjections, SubcutaneousPenicillin GInfusions, IntravenousTobramycinDrug InteractionsLactamsClindamycinMice, Inbred C57BLLiverBiological AvailabilityChemistryHalf-LifeInjections, IntramuscularChemical PhenomenaChloramphenicolNeomycinAdministration, IntravenousAdministration, RectalAzithromycinDNA, BacterialChromatography, High Pressure LiquidPhysician's Practice PatternsArea Under CurvePenicillin ResistanceMolecular StructureAmoxicillinDrug SynergismOxytetracyclineDouble-Blind MethodLincomycinProspective StudiesCeftriaxoneAcute DiseaseMice, Inbred BALB CCross InfectionCulture MediaPolymyxinsDogsCephaloridineThienamycinsbeta-LactamasesFecesLeucomycinsMolecular Sequence DataMagnetic Resonance SpectroscopyInfusions, ParenteralStaphylococcusPseudomonas InfectionsBacteremia