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Figure 2: Bar diagram showing the effect of nifedipine (1 μM) or Ca[2]+ free EGTA solution on in vitro lead acetate (10 mM) - induced contraction on isolated rat portal vein. Data presented are mean ± SEM of five animals. *P<0.05 vs lead alone

Figure 2: Bar diagram showing the effect of nifedipine (1 μM) or Ca<sup>[2]</sup>+ free EGTA solution on in vitro lead acetate (10 mM) - induced contraction on isolated rat portal vein. Data presented are mean ± SEM of five animals. *<i>P</i><0.05 vs lead alone