Bacterial overgrowth.
D001431:Bacteriological Techniques; D003470:Culture Media; D006801:Humans; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology / Q000627:therapeutic use*; D010614:Pharynx / Q000382:microbiology*; D013291:Streptococcus / Q000187:drug effects / Q000254:growth & development*
D003470:Culture Media; D010406:Penicillins