title: Morphology of the eyespot and description of two pigment granules in the esophageal muscle of a marine nematode, Oncolaimus vesicarius.
mesh_terms: D000818:Animals; D002462:Cell Membrane; D003594:Cytoplasmic Granules; D003896:Desmosomes; D004947:Esophagus / Q000166:cytology; D008722:Methods; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009132:Muscles / Q000166:cytology*; D009210:Myofibrils; D009348:Nematoda / Q000166:cytology* / Q000254:growth & development; D010786:Photoreceptor Cells; D010860:Pigments, Biological; D012519:Sarcoplasmic Reticulum
chemical_list: D010860:Pigments, Biological