title: The fine structure of the planarian Polycelis tenuis Iijima. II. The intestine and gastrodermal phagocytosis.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism; D000818:Animals; D004064:Digestive System / Q000166:cytology / Q000201:enzymology*; D006651:Histocytochemistry; D008854:Microscopy, Electron; D010544:Peroxidases / Q000378:metabolism; D010587:Phagocytosis; D014419:Turbellaria / Q000166:cytology / Q000201:enzymology*
chemical_list: D010544:Peroxidases; D000135:Acid Phosphatase