Brp accumulates in stathmin mutant nerves. A, Images of α-Brp immunostaining in nerve segments from WT (+/+), the stathmin mutant (stai^B200/stai ^B200), and the stathmin mutant with rescue expression of tub::stai (stai^B200/stai ^B200; tub::stai/tub::stai). Scale bar, 10 μm. B, Histogram showing the quantification of the average intensity of Brp per nerve segment in the three genotypes. WT, n = 14; stathmin mutant n = 14; stathmin mutant with rescue, n = 13. *p ≪ 0.001 versus wild type and rescue.