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Fig. S2
Morphological Differences between Cortical and Primordial Cardiomyocytes
(A) An image of a 6 wpf cmlc2:CreER; priZm ventricular surface, from an animal that had been labeled with 4-HT at 2 dpf. This imaged area is not covered with cortical muscle. The cardiomyocytes have limited sarcomeric structure.
(B) An image of a 10 wpf cmlc2:CreER; priZm ventricular surface, in which cyan colored cortical myocytes (arrows) are positioned on top of the primordial layer. Cortical myocytes are rod-shaped with clearer sarcomeric organization. Scale bars = 100 μm.
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