title: Influence of preganglionic stimulation of superior cervical ganglion on the ultrastructure of rat pineal gland.
mesh_terms: D000818:Animals; D001339:Autonomic Fibers, Preganglionic / Q000502:physiology*; D004558:Electric Stimulation; D008297:Male; D009333:Neck / Q000294:innervation; D010870:Pineal Gland / Q000648:ultrastructure*; D051381:Rats