title: Ultrastructure of pineal nerve endings after preganglionic stimulation of rat superior cervical ganglion.
mesh_terms: D000818:Animals; D002572:Cervical Plexus; D004558:Electric Stimulation; D008297:Male; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000648:ultrastructure*; D010870:Pineal Gland / Q000648:ultrastructure*; D051381:Rats