To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 4. Movie shows RNF20+/-2 cardiomyocytes not beating under bright-field microscopy. The H2Bub1-deposition complex is required for human and mouse cardiogenesis Syndi Barish, Kathryn Berg, Jeffrey Drozd, Isabella Berglund-Brown, Labeeqa Khizir, Lauren K. Wasson, Christine E. Seidman, Jonathan G. Seidman, Sidi Chen, and Martina Brueckner Development 2023. 150:None-None; doi: 10.1242/dev.201899 Download Original Video