Supplemental Video 3 related to Figure 2. Dynamics of ARX-2 in embryonic cells (related to Figure 2D) Fluorescence time-lapse movies of GFP::MIG-2 labeled membrane (green) and ARX-2 (ARX-2::TagRFP knock-in, red) in embryonic cells. Arrowhead, fusing membrane border. Frames were taken every 1 minute. The display rate is 5 frames per second.