Figure 4From: Sinoatrial node dysfunction induces cardiac arrhythmias in diabetic miceQuantification of RR fluctuations. A Mean RR interval during 3-min periods before and after isoprenaline injection. B Standard deviation of the same RR intervals. C Standard deviation of the differences between consecutive RR intervals. *, P < 0.05, Repeated-measures two-way ANOVA followed by post-hoc Bonferroni test.Back to article page