(A) Representative images of sensory neuron axons at 48 hr post DMSO or vincristine treatments (5 nM). Scale bar, 100μm. (B) Axon degeneration post 48 hr DMSO or vincristine treatment (0.5, and 5 nM) was quantified. After vincristine treatment, significant axonal degeneration was observed in wild-type. This degeneration was delayed in SARM1 knockout axons. Kruskal-Wallis test, H=160.8 and p = 2.2 × 10−16, showed significant difference among groups (sample numbers are indicated on top of bars). Pairwise Wilcox comparison with Bonferroni adjusted p-value was used to calculate significant differences. *p < 5 × 10−4 denotes significant difference from the DMSO treated wild-type axons at a same dose.