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Ventral view of an embryo expressing GAP43::mCherry (magenta; membrane) and sqh::GFP (green; myosin). MCP::mCherry and Snail::MS2 (not shown) were used to mark the mesoderm boundary. The embryo is illuminated repeatedly in the area marked by a red ellipse in frame 1. During the laser illumination experiment, images were captured every 2 s. The last three frames are single confocal sections from a 3D stack taken at intervals of 38 s (Fig. 5). Frame rate: 20 frames per second.
