(I - K) Representative frames (upper) and quantification (lower) of F-actin enrichment at the QR.ap periphery in WT (I) and mig-2S139A/E mutant animals (J  K). The trace starts from the rear of the QR.ap and moves along the cell periphery to the leading edge (L) and back to the rear (R). F-actin was labeled with GFP::Moesin ABD; the plasma membrane and histone were marked with mCherry fluorescence. Green lines, F-actin fluorescence intensity; red lines, plasma membrane fluorescence intensity; dotted lines, cell periphery. Double-headed arrows indicate the F-actin enrichment region, in which the fluorescence intensity is 2-fold higher than the background. Scale bars, 5 μm. (L) Quantification of F-actin enrichment ratio in WT and mig-2 mutants. Error bars indicate SD. N = 28 - 68. **, P  0.01; ***, P  0.001 by Student's t-tests. 