247054.fig.003a
(a)
247054.fig.003b
(b)
Figure 3: Effect of Nigella sativa seed extract at 14 mg/mL on the Ca2+-induced (0.01–10 mM) contraction of rat aortic rings without endothelium pretreated with PE (  M) (a) or KCl (  M) (b). Data are expressed as mean ± S.E.M. ( ). , compared tocontrol.