title: An ultrastructural examination of the mesoglea of Hydra.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000166:cytology* / Q000502:physiology; D006025:Glycosaminoglycans; D006651:Histocytochemistry; D008854:Microscopy, Electron; D011506:Proteins
chemical_list: D006025:Glycosaminoglycans; D011506:Proteins