To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2. Brightfield lateral view of a 72 hpf Tg(cryaa:DsRed,-5.1myl7:CreER); tnnt2a-/- zebrafish after tamoxifen treatment starting at 32 hpf. The rescued tnnt2a mutant displays a beating heart and some blood flow (related to Supplemental Fig. 4). A β-catenin chromobody-based probe highlights endothelial maturation during vascular morphogenesis in vivo Sébastien Gauvrit, Shengnan Zhao, Ulrich Rothbauer, and Didier Y. R. Stainier Development 2024. 151:None-None; doi: 10.1242/dev.202122 Download Original Video