title: Adrenergic innervation of pial arteries related to the circle of Willis in the cat.
mesh_terms: D000818:Animals; D002415:Cats; D002536:Cerebral Arteries / Q000294:innervation*; D002941:Circle of Willis; D008856:Microscopy, Fluorescence; D013564:Sympathetic Nervous System / Q000033:anatomy & histology*