title: The ecological aspect of the study of the intestinal ultrastructure of nematodes.
mesh_terms: D000818:Animals; D001197:Ascaridia / Q000166:cytology; D002923:Cilia; D004064:Digestive System / Q000166:cytology*; D004463:Ecology; D008854:Microscopy, Electron; D008928:Mitochondria; D009024:Morphogenesis; D009348:Nematoda / Q000166:cytology*; D009940:Organoids