Figure 6.
Microtubule polymerization features show no difference between wild-type extending and retracting growth cones. Spontaneously extending and retracting wild-type growth cones were stratified according to growth cone area, and the microtubule growth parameters presented in Figure 3 were compared between them. Only growth cones smaller than 20 μm2 were included. Median values and 95% confidence intervals are shown for comet number (A), comet density (B), microtubule growth rate (C), microtubule growth duration (D), comet distance from growth cone front (E), and comet distance from growth cone midline (F). No significant differences were found between extending and retracting growth cones of the same growth cone size category. **p < 0.01, ***p < 0.001, n.s., non-significant; according to Wilcoxon rank-sum test.