“…However, in our previous study (Fukushi & Wakui, 1986a) nicotinic receptor antagonists, such as d-tubocurarine, did not reduce the after-response. This suggests little involvement of a cholinergic-noradrenergic mechanism in this tissue, because the cholinergic-noradrenergic mechanism in other tissues (rabbit heart; Lindmar, Loffelholz & Muscholl, 1968;pulmonary artery;Su & Bevan, 1970;guinea-pig heart;Westfall & Brasted, 1972;rat brain slices;Westfall, 1974) including the longitudinal smooth muscle of the guinea-pig vas deferens (Wakui & Fukushi, 1986a;Fukushi & Wakui, 1986b, 1987 is known to work through nicotinic acetylcholine receptors at the noradrenergic nerve terminals.…”