To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3. Zoom-in of blue region of time-lapse imaging of injured Tg(EF1α:mAg-hGem) zebrafish heart (related to Figure 2B′). Arrows indicate proliferative events. Each frame represents 45 minutes. Development ; doi: 10.1242/dev.199740 Download Original Video