To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1 acvr1ba*-induced endodermal cells ingress into the inner layer when transplanted to the animal pole. Related to Figure 1. Frames were acquired every 5 min for 195 min. Playback is 7 frames/s. Nodal signaling has dual roles in fate specification and directed migration during germ layer segregation in zebrafish Zairan Liu, Stephanie Woo, and Orion D. Weiner Development 2018. 145:None-None; doi: 10.1242/dev.163535 Download Original Video