539475.fig.002a
(a)
539475.fig.002b
(b)
Figure 2: Dose-response curves for the vasorelaxation effect of extracts from leaves (LE), stems (SE), and roots (RE) on PE-induced contractions in aortic rings of (a) SHR and (b) WKY rats. Values are shown as means ± S.E.M. with rats, * , ** compared with vehicle control, distilled water.