Figure 3.

The effect of celery seed extract at 2 mg/ml on the Ca²⁺-induced (0.01-10 mM) contraction of rat aortic rings without endothelium pretreated with PE (10⁻⁶ M) (A) or KCl (6×10⁻² M) (B). Data are expressed as mean±SEM (n=8). **p<0.01, and ***p<0.001 compared to control