Movie S2

acvr1ba*-induced endodermal cells and sox32 MO induced ectodermal cells segregate into two separate layers. sox32 MO-injected donor cells (red) remain on the outer layer of the embryo, while acvr1ba*-injected donor cells (green) migrate into the inner layer of the embryo. Related to Figure 1. Frames were acquired every 3 min for 288 min. Playback is 7 frames/s.