CephalosporinsPenicillinsPenicillin GPenicillin VPenicillin ResistanceAnti-Bacterial AgentsMicrobial Sensitivity TestsPenicillin G ProcainePenicillin Amidasebeta-LactamasesCephalosporin ResistancePenicillin G BenzathineCephaloridinebeta-LactamsCefotaximeDrug Resistance, MicrobialPenicillinaseCeftriaxoneCephalexinCephalosporinaseBacteriaDrug Resistance, BacterialCephalothinAmpicillinCefiximePenicillin-Binding ProteinsAntibiotic ProphylaxisStreptococcus pneumoniaeEnterobacteriaceaebeta-Lactam ResistanceCefazolinCeftazidimeCefmenoximeEscherichia coliBacterial InfectionsMuramoylpentapeptide CarboxypeptidaseEnterobacterNeisseria gonorrhoeaeCloxacillinCeftizoximeGram-Negative BacteriaCephradineDrug Resistance, Multiple, BacterialLactamsPeptidyl TransferasesAztreonamAminoglycosidesCefotiamBacterial ProteinsGonorrheaCefoxitinHexosyltransferasesCefuroximeGentamicinsDrug UtilizationCefamandoleKlebsiellaErythromycinEnterobacteriaceae InfectionsPneumococcal InfectionsKlebsiella pneumoniaePenicillanic AcidCarbapenemsStreptococcal InfectionsStreptomycesStaphylococcus aureusGram-Positive BacteriaCephamycinsCefaclorCross InfectionProteusCefoperazoneAnti-Infective AgentsTetracyclineChemistryDNA, BacterialDrug HypersensitivityPseudomonas aeruginosaChemical PhenomenaMoxalactamClindamycinStaphylococcusCefadroxilClavulanic AcidCulture MediaImipenemThienamycinsKanamycinVancomycinKlebsiella InfectionsCarbenicillinGram-Negative Bacterial InfectionsChloramphenicolStreptomycinMacrolidesCefmetazolePharyngitisAcremoniumAmoxicillinStreptococcus