Movie 1.

Exemplary heart phenotypes of kcnh6a-inception editants 10 second movies of heart beat and heart morphology analysis at stage 35 of wildtype (WT, left) and kcnh6a-inception injected embryos. Representative phenotypes cover 2:1 atrioventricular block (middle) and reduced ventricular contractility (right). A, atrium; V, ventricle; movie plays at 10 frames per second (real time).