Video 2. Live imaging of cephalic furrow formation along the lateral side of a representative Drosophila embryo (gastrulation stage 6), after water (control, left panel) or Colcemid injection (right panel).

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Membranes are labeled in green (EGFP-CaaX) and nuclei are labeled in magenta (H2Av-mRFP1 [71]). Scale bar is 10 μm.