Video 1. Duchenne Muscular Dystrophy (DMD) male arrhythmia patterns.

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Movie # i Control iPSC-CM monolayer showing slow and organized spontaneous activity. Movies # ii–v. DMD hemizygous Male 1 iPSC-CM monolayers are inducible of high-frequency reentry maintained by one (videos # ii and iii) or more (videos # iv and v) self-sustaining rotors mimicking ventricular tachycardia patterns with varying degrees of complexity. Lower tracings in each movie are single pixel recordings from sites indicated by the inset.