Movie 4.

Y-27632 treatment does not inhibit ectoderm divisions. Mesectoderm (centre) and ectoderm (top and bottom) cells in embryos expressing myosin:GFP (green) and Gap43:mCherry (magenta), and injected, 1 hour after the onset of mesectoderm divisions, with 50% DMSO (left) or 20 mM Y-27632 (right). Anterior, left. Images were acquired every 30 seconds.