title: Antibiotic-resistant streptococci in the mouths of children treated with penicillin.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D002511:Cephalosporins / Q000494:pharmacology; D002648:Child; D002675:Child, Preschool; D003428:Cross Infection; D006801:Humans; D009055:Mouth / Q000187:drug effects*; D010403:Penicillin Resistance; D010406:Penicillins / Q000627:therapeutic use*; D012463:Saliva / Q000382:microbiology*; D013291:Streptococcus / Q000187:drug effects* / Q000302:isolation & purification
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D000667:Ampicillin