To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1. arnt1bcm2/+; arnt2bcm3/+ 50 hpf, head and heart Hemato-vascular specification requires arnt1 and arnt2 genes in zebrafish embryos Hailey E. Edwards, Mary Jane Elizalde, Jaclyn P. Souder, and Daniel A. Gorelick Development 2023. 150:None-None; doi: 10.1242/dev.200500 Download Original Video