title: Study of the biphasic response of the dog's iris to nerve stimulation.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000494:pharmacology*; D004285:Dogs; D005730:Ganglionic Blockers / Q000494:pharmacology*; D006145:Guanethidine / Q000494:pharmacology; D006584:Hexamethonium Compounds / Q000494:pharmacology*; D007498:Iris / Q000294:innervation*; D009538:Nicotine / Q000494:pharmacology*; D010275:Parasympathetic Nervous System / Q000502:physiology*; D010643:Phenoxybenzamine / Q000494:pharmacology; D011680:Pupil / Q000187:drug effects*; D012110:Reserpine / Q000494:pharmacology; D013564:Sympathetic Nervous System / Q000502:physiology*
chemical_list: D001713:Biphenyl Compounds; D005730:Ganglionic Blockers; D006584:Hexamethonium Compounds; D010643:Phenoxybenzamine; D009538:Nicotine; D001285:Atropine; D012110:Reserpine; D006145:Guanethidine