PenicillinsPenicillin GPenicillin VPenicillin ResistancePenicillin G ProcaineAnti-Bacterial AgentsPenicillin AmidasePenicillin G BenzathineMicrobial Sensitivity TestsBacteriaStreptococcus pneumoniaeMass SpectrometryPenicillin-Binding ProteinsCephalosporinsGram-Positive BacteriaPenicillinaseMuramoylpentapeptide CarboxypeptidaseAmpicillinAnti-Infective AgentsStaphylococcus aureusGram-Negative BacteriaPeptidyl TransferasesHexosyltransferasesEscherichia coliDrug Resistance, MicrobialStreptococcal InfectionsPneumococcal InfectionsNeisseria gonorrhoeaeErythromycinbeta-LactamsCloxacillinDrug Resistance, BacterialLactamsBacterial InfectionsAntimicrobial Cationic PeptidesStreptococcusCefotaximeBacterial ProteinsGentamicinsStaphylococcusCephaloridinebeta-LactamasesCeftriaxoneProteusBody Mass IndexSilverDrug HypersensitivityMolecular Sequence DataCephalothinGonorrheaAcremoniumPseudomonas aeruginosaCulture MediaSpectinomycinPlant ExtractsFluoroquinolonesAmino Acid SequenceSpectrometry, Mass, Electrospray IonizationStructure-Activity RelationshipCephalexinEnterococcus faecalisCarbenicillinTetracyclineTandem Mass SpectrometryEnterobacteriaceaePharyngitisMolecular StructureOxacillinPeptidoglycanDisk Diffusion Antimicrobial TestsStreptococcus pyogenesPenicillanic AcidMacrolidesAmoxicillinSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationPenicilliumColony Count, MicrobialQuinolonesVancomycinClindamycinStreptomycinEndocarditis, BacterialChloramphenicolChromatography, High Pressure LiquidCefuroximeMicrobial ViabilitySarcinaTonsillitisBacteriolysisDrug SynergismNeurosyphilisAmidohydrolasesCarrier ProteinsAminoglycosidesCephalosporinaseMethicillinDrug Resistance, Multiple, BacterialHoneyStreptococcus sanguisCiprofloxacin