title: A catecholaminergic neuron connecting optic neuropiles of crayfish.
mesh_terms: D000320:Adrenergic Fibers / Q000033:anatomy & histology*; D000818:Animals; D003400:Astacoidea / Q000033:anatomy & histology*; D002395:Catecholamines / Q000378:metabolism; D006651:Histocytochemistry; D008856:Microscopy, Fluorescence; D014795:Visual Pathways / Q000166:cytology*
chemical_list: D002395:Catecholamines