Movie 6.

Dynamic activity patterns of knock-in reporter LfngT2A3xVenus before and during early somitogenesis. Related to Fig. S5. Venus fluorescence (cyan) is shown. The embryo was imaged from EB stage onwards from posterior side. The movie shows the embryo as MIP from three perspectives: posterior (top left), left side (top right), distal (bottom left). Note the strong autofluorescence of visceral endoderm at the beginning of the experiment which partially masks the pulse in the mesoderm layer below. Time is indicated in hr:min.