Movie 2

Wild-type embryo + Lifeact-GFP mRNA at 80% epiboly. Confocal time-lapse imaging of hypoblast/mesendodermal cells located 90° from the notochord and near the embryo equator as shown in Fig. 2A (15 min time-lapse/1 min imaging intervals). Anterior is to the top and dorsal to the right.