Figure 5.

(A) The fraction of time with significant variance analysis of cells at ∼1000 μm distance from the swarming front and, for comparison, (B) the fraction of time with significant variance analysis in phase 1, corresponding to Fig. 4C. (C) Overlay of whole-image-series temporal variance analysis (red) of cells in late phase 2 with phase-contrast images (gray) is shown. Movement in the z-dimension can be inferred from real-time microscopy and the overlapping of cells. Motion is restricted mainly to foci at the tips of cells, whereas motion of cells in phase 1 (D) is confined to the xy-dimension. To see this figure in color, go online.