title: Observations on trichodinids endocommensal in fishes.
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000145:classification* / Q000166:cytology; D004064:Digestive System / Q000382:microbiology; D005399:Fishes / Q000382:microbiology*; D014551:Urinary Tract / Q000382:microbiology