title: Morphological and histochemical studies on the secretory glands of starfish tube feet.
mesh_terms: D000818:Animals; D004447:Echinodermata / Q000033:anatomy & histology*; D006025:Glycosaminoglycans / Q000378:metabolism*; D006651:Histocytochemistry; D008853:Microscopy; D008854:Microscopy, Electron; D009093:Mucus / Q000378:metabolism*
chemical_list: D006025:Glycosaminoglycans