To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Supplemental Movie 1 Time-lapse confocal microscopy of E3.5 Gata4H2B-GFP/+ embryo with GFP (green) overlaid on bright field (BF) and then GFP alone (grey). Scale bar = 50μm. Still images shown in Fig. 1F. A Gata4 nuclear GFP transcriptional reporter to study endoderm and cardiac development in the mouse Claire S. Simon, Lu Zhang, Tao Wu, Weibin Cai, Nestor Saiz, Sonja Nowotschin, Chen-Leng Cai, and Anna-Katerina Hadjantonakis Biology Open 2018. 7:None-None; doi: 10.1242/bio.036517 Download Original Video