title: Catecholamine-depleting effect of black widow spider venom in iris nerve fibres.
mesh_terms: D000109:Acetylcholine / Q000378:metabolism; D000818:Animals; D007498:Iris / Q000294:innervation*; D008856:Microscopy, Fluorescence; D018377:Neurotransmitter Agents / Q000378:metabolism*; D051381:Rats; D013112:Spiders; D013564:Sympathetic Nervous System / Q000187:drug effects*; D009435:Synaptic Transmission / Q000187:drug effects; D014688:Venoms / Q000494:pharmacology*
chemical_list: D018377:Neurotransmitter Agents; D014688:Venoms; D000109:Acetylcholine