Anti-Bacterial AgentsAntibiotic ProphylaxisMicrobial Sensitivity TestsDrug Resistance, BacterialDrug Resistance, MicrobialStreptomycesAntibiotics, AntineoplasticAminoglycosidesBacteriaBacterial InfectionsGentamicinsDrug Utilizationbeta-LactamsPenicillinsFermentationErythromycinEscherichia coliAmpicillinTetracyclineStaphylococcus aureusMacrolidesDrug Resistance, Multiple, BacterialCephalosporinsBacterial ProteinsGram-Positive BacteriaKanamycinAnti-Infective AgentsVancomycinPseudomonas aeruginosaStreptomycinCiprofloxacinGram-Negative BacteriaCefazolinStaphylococcal InfectionsPenicillin GDrug PrescriptionsSurgical Wound InfectionLactamsClindamycinChloramphenicolChemistryChemical PhenomenaTobramycinDNA, BacterialNeomycin