Penicillin VPenicillinsPenicillin GPenicillin AmidasePenicillin ResistancePharyngitisPenicillin G ProcaineTonsillitisPenicillin G BenzathinePenicillium chrysogenumStreptococcal InfectionsAnti-Bacterial AgentsCefuroximeCephalosporinsStreptococcus sanguisRheumatic FeverAdenoidsStreptococcus pyogenesAmidohydrolasesMicrobial Sensitivity TestsPenicillin-Binding ProteinsStreptococcus pneumoniaePenicillinase