To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Supplemental Movie 2 Time-lapse confocal microscopy of a control (KSOM) cultured E4.0 Gata4H2B-GFP/+ embryo with GFP (green) overlaid on bright field (BF) and then GFP alone (grey). Scale bar = 20μm. Still images and quantification shown in Supplemental Fig. 2. 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