Figure 8From: Potassium channel openers and prostacyclin play a crucial role in mediating the vasorelaxant activity of Gynura procumbens Concentration-relaxation curves for F1 in the isolated rat aortic rings. The F1-induced relaxation was studied on endothelium-intact, endothelium-denuded aortic rings and endothelium-intact aortic rings preincubated with L-NAME or ODQ or methylene blue or indomethacin. Values are mean ± S.E.M (n = 6).Back to article page