Acetylcholinesterase activity of autonomic nerve fibers in ther dilatator area of the rat iris was located light- and electronmicroscopically by means of am, dified thiocholin technique. Some axons exhibit acetylcholinesterase activity, other ones are devoid of this enzyme. The enzyme is located in the axolemmal membrane of cholinergic nerve fibers. On the basis of these studies, the idea is refuted that adrenergic postganglionic axons also exert acetylcholinesterase activity.
ASJC Scopus subject areas