AmpicillinPenicillinsPenicillin ResistanceNasopharyngeal DiseasesStreptococcus pneumoniaePenicillin GMicrobial Sensitivity TestsPneumococcal InfectionsPenicillin VAnti-Bacterial AgentsPenicillin-Binding ProteinsMuramoylpentapeptide CarboxypeptidaseAmpicillin ResistancePeptidyl TransferasesHexosyltransferasesPenicillin G ProcaineSerotypingPenicillin AmidasePenicillin G BenzathineSulbactamPenicillinaseDrug Resistance, MicrobialPivampicillinCephalosporinsDrug Resistance, Bacterialbeta-LactamasesCloxacillinGentamicinsChloramphenicolbeta-LactamsTetracyclineHaemophilus influenzaeEscherichia coliStreptococcal InfectionsCephaloridinePenicillanic AcidCarbenicillinNeisseria gonorrhoeaeDrug Resistance, Multiple, BacterialCeftriaxoneErythromycinAmoxicillinEnterococcus faecalisCefotaximeProbenecidTrimethoprimSulfamethoxazoleEnterobacteriaceaeGonorrheaCephalothinR FactorsCephalexinProteusStreptomycinStreptococcusLactamsSpectinomycinGram-Positive Bacterial InfectionsBacterial ProteinsCulture MediaAnti-Infective AgentsDrug HypersensitivityDNA, BacterialEndocarditis, BacterialBacteriaEnterococcus faeciumStaphylococcusKlebsiellaOxacillinCefuroximeVancomycinTrimethoprim-Sulfamethoxazole CombinationEnterococcusDrug Resistance, MultipleKanamycinCephalosporinaseClindamycinDrug ResistanceStaphylococcus aureusDrug Therapy, CombinationDrug SynergismAmoxicillin-Potassium Clavulanate CombinationConjugation, GeneticClavulanic AcidsDysentery, BacillaryCiprofloxacinAcremoniumTicarcillinCefamandolebeta-Lactam ResistanceFecesMutationPlasmidsSarcinaBacterial InfectionsEnterobacterDicloxacillinAminoglycosidesMezlocillinElectrophoresis, Gel, Pulsed-Field