PenicillinsAnti-Bacterial AgentsPenicillin GPenicillin VPenicillin ResistancePenicillin G ProcaineBacteriaPenicillin AmidasePenicillin G BenzathineMicrobial Sensitivity TestsSubstance PStreptococcus pneumoniaePenicillin-Binding ProteinsPenicillinaseGram-Positive BacteriaGram-Negative BacteriaAmpicillinDrug Resistance, MicrobialCephalosporinsBacterial ProteinsMuramoylpentapeptide CarboxypeptidaseDrug Resistance, BacterialPeptidyl TransferasesAntibiotic ProphylaxisEscherichia coliStreptococcal InfectionsHexosyltransferasesPneumococcal InfectionsBacteria, Anaerobicbeta-LactamsNeisseria gonorrhoeaeErythromycinDNA, BacterialStreptococcusGentamicinsCloxacillinMolecular Sequence DataCulture MediaCeftriaxoneBacterial InfectionsStaphylococcus aureusTetracyclineCefotaximeDrug Hypersensitivitybeta-LactamasesCephaloridineGonorrheaStaphylococcusLactamsPharyngitisAcremoniumStreptomycesStreptomycinAminoglycosidesCephalothinClindamycinBacteria, AerobicRNA, Ribosomal, 16SAnti-Infective AgentsPeptidoglycanCarbenicillinEnterobacteriaceaeMacrolidesChloramphenicolProteusOxacillinGenes, BacterialEndocarditis, BacterialVancomycinAmoxicillinSequence Analysis, DNAPhylogenySubstance-Related DisordersDrug Resistance, Multiple, BacterialSpectinomycinFermentationPseudomonas aeruginosaPenicilliumTonsillitisCefuroximeEnterococcus faecalisColony Count, MicrobialPenicillanic AcidSerotypingStreptococcus pyogenesKanamycinGene Expression Regulation, BacterialAmino Acid SequenceDrug UtilizationMutationCell WallStaphylococcal InfectionsDNA, RibosomalTime FactorsNeurosyphilisWater MicrobiologyCephalexinMethicillinProbenecidViridans Streptococci