title: Changes in the number of vesicles and the size of sympathetic nerve terminals following nerve stimulation.
mesh_terms: D000818:Animals; D002907:Chronaxy; D004558:Electric Stimulation; D008297:Male; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000502:physiology; D009431:Neural Conduction; D009638:Norepinephrine / Q000378:metabolism*; D051381:Rats; D013564:Sympathetic Nervous System / Q000502:physiology*; D014649:Vas Deferens / Q000294:innervation*
chemical_list: D009638:Norepinephrine