247054.fig.005
Figure 5: Effect of cumulative concentrations of Nigella sativa seed extract (2, 4, 6, 8, 10, and 14 mg/mL) on rat intact aortic rings contracted with PE (  M) (PE + E), after pretreatment with glibenclamide (  M) (PE + Gly) or tetraethylammonium chloride (5 mM) (PE + TEA). Data are expressed as mean ± S.E.M. ( ). , , and compared to PE + E; , , and compared to PE + TEA.