Figure 7. (A) Effect of glybenclamide on lemakalim-induced vasorelaxation in endothelium-intact pulmonary arterial rings (n = 5). Lemakalim-induced vasorelaxation was attenuated (P < 0.05) by glybenclamide compared with the no-drug condition. (B) Effect of glybenclamide on lemakalim-induced vasorelaxation in endothelium-denuded pulmonary arterial rings (n = 5). Lemakalim-induced vasorelaxation was attenuated (P < 0.05) by glybenclamide compared with the no-drug condition.