title: Extraneuronal catecholamine in the iris of the rat: a consequence of nonsynaptic neurotransmission?
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D006651:Histocytochemistry; D007498:Iris / Q000187:drug effects / Q000294:innervation / Q000378:metabolism*; D008297:Male; D008856:Microscopy, Fluorescence; D009638:Norepinephrine / Q000378:metabolism* / Q000494:pharmacology; D051381:Rats; D013564:Sympathetic Nervous System / Q000502:physiology*; D009435:Synaptic Transmission
chemical_list: D009638:Norepinephrine