Oropharyngeal ecology.
D000818:Animals; D001419:Bacteria / Q000254:growth & development* / Q000302:isolation & purification; D004463:Ecology; D006760:Hospitalization; D006801:Humans; D051379:Mice; D008875:Middle Aged; D009055:Mouth / Q000382:microbiology*; D010614:Pharynx / Q000382:microbiology*; D013291:Streptococcus / Q000302:isolation & purification