Figure 3. Effects of 20 and 40 mg/kg nifedipine (N20 and N40) on the duration of reperfusion arrhythmias in isolated hearts of A, Wistar rats and B, Wistar audiogenic rats (WAR). Data are reported as means ± SEM for 6 rats per group. ^*P < 0.05 compared to control (WAR) (one-way ANOVA followed by the Newman-Keuls post-test).