Figure 5. Increase of the mobile fraction of β-cat-GFP in the mesoderm during invagination.

(a) Image sequence of mesodermal cells expressing β-cat -GFP during a FRAP experiment. The red circle shows the region of photobleaching. Time in seconds is given relative to bleaching. (b) Corresponding kymograph of d in rainbow LUT and black and white with indicated ROI for value calculation. (c) Relative intensity after photobleaching of β-cat-GFP in the mesoderm at three different stages during early Drosophila embryonic development, just before and during invagination. Time in seconds is given relative to bleaching. (d) Mobile fraction in %. Mann-Whitney test p-values are p=0.011 and p=0.006 for early stage 6 (N = 12) and mid stage 6 (N = 13) compared to stage 5 (N = 7).

Figure 5—figure supplement 1. Synthetic view of the findings (box) integrated in the current knowledge.