Different phenotypes of injured zebrafish heart. The stages of heart regeneration after amputation arranged by day, including (a) uncut, (b) 1 dpa, (c) 4 dpa, (d) 10 dpa, (e) 18 dpa, and (f) 30 dpa. The dashed line represents the line of amputation during surgery and is about 10–20% of the ventricular apex. Scar bar at the lower right corner indicates 100 uM in length

Acknowledgments
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