Penicillin and the mouth flora.
D004917:Erythromycin / Q000627:therapeutic use; D006801:Humans; D009055:Mouth / Q000382:microbiology*; D010403:Penicillin Resistance; D010406:Penicillins / Q000627:therapeutic use*; D013291:Streptococcus / Q000187:drug effects; D014081:Tooth Extraction