(c) Total locomotor activity was assessed as the average number of beam crossings per 30-min bin per fly. Htt93Qex1-expressing flies (n = 29) have reduced locomotor activity compared to controls (***P 0.001; n = 30 (WT (w118)); n = 32 (mGpx1)), which is restored by mGpx1 (**P 0.01; n = 32). Comparisons were performed by Kruskal-Wallis one-way ANOVA. 