Penicillin G ProcaineProcainePenicillin GPenicillinsPenicillin G BenzathinePenicillin AmidasePenicillin ResistancePenicillin VAnti-Bacterial AgentsMicrobial Sensitivity TestsPenicillin-Binding ProteinsPenicillinaseStreptococcus pneumoniaeAmpicillinCephalosporinsMuramoylpentapeptide CarboxypeptidaseGonorrheaSpectinomycinStreptococcal InfectionsProbenecidPeptidyl TransferasesHexosyltransferases