Figure 1. Dose-response curves of the effects of close arterial administration of ATP and α,β-methylene-ATP.
Values are means ±s.e.m. for 7-8 experiments of the peak change in these variables induced by either ATP (^) or α,β-methylene-ATP (▴). Abbreviations: MNA, mesenteric afferent nerve activity; JP, intrajejunal pressure; BP, blood pressure; HR, heart rate.