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Fig. 3. Time-lapse imaging of wild-type cells. (A,B) Selected
frames from time-lapse confocal movies are shown for a deep (A) and two
superficial (B) cells. Time elapsed (in minutes) from the first frame is
indicated in the upper right corner. mGFP-labeled embryos were imaged in the
hindbrain region, from a dorsal view, beginning at approximately 2-3 som and
extending through 6-7 som. Dotted red lines indicate the midline of the neural
keel/rod, white lines mark the edges of the neural keel/tube, arrows and
numbers indicate individual cells identified in multiple frames, asterisks in
A indicate two daughter cells derived from a recent cell division, and the box
in B' shows interdigitation of cells at the midline. Scale bar: 100
µm.