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CaMKII-depedent phosphorylation of Nav1.5 regulates atrial fibrillation inducibility. (A) Representative electrocardiograms (top panel), intracardiac atrial (middle) and ventricular (bottom) electrograms during controlled pacing and (B) incidence of pacing-induced atrial fibrillation from WT, Nav1.5-S571E (S571E), and Nav1.5-S571A (S571A) mice. *P<0.05 vs. WT; numbers of animals analyzed are provided in corresponding bars.
