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. 2023 Nov 14;133(12):1040–1055. doi: 10.1161/CIRCRESAHA.123.323571

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© 2023 The Authors.

Circulation Research is published on behalf of the American Heart Association, Inc., by Wolters Kluwer Health, Inc. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial-NoDerivs License, which permits use, distribution, and reproduction in any medium, provided that the original work is properly cited, the use is noncommercial, and no modifications or adaptations are made.

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Figure 7. — ECG characteristics for wild-type (WT) and CaMKIIδ (Ca²⁺/calmodulin kinase II delta)-C273S mice. Representative electrocardiograms from a WT (A) and CaMKIIδ-C273S (B) mouse under anesthetic and mean data for waveform amplitudes and durations (C through K). N=13 to 17 per group. ECG traces for some of the CaMKIIδ-C273S mice showed spontaneous arrhythmic events (L). These events led to variability in total heart rate (HR) (M) and acute periods of bradycardia (N).