title: [The fine structural and histochemical observation of unmyelinated nerve fibers around the central retinal artery in the optic nerve].
mesh_terms: D000110:Acetylcholinesterase / Q000032:analysis; D001158:Arteries / Q000166:cytology; D006651:Histocytochemistry; D006801:Humans; D008854:Microscopy, Electron; D009413:Nerve Fibers, Myelinated; D009900:Optic Nerve / Q000098:blood supply*; D010275:Parasympathetic Nervous System / Q000166:cytology; D012171:Retinal Vessels / Q000166:cytology / Q000294:innervation*; D013564:Sympathetic Nervous System / Q000166:cytology
chemical_list: D000110:Acetylcholinesterase