Enhanced behavioral recovery in double-heterozygous NgR1+/−PlexinA2+/− mice after pyramidotomy. A, Grid walk test at indicated days before or after PyX of WT (n = 9), NgR1+/− (n = 8), PlexinA2+/− (n = 7), and NgR1+/−PlexinA2+/− (n = 7) mice. Each marker shows percentage of missed steps from average of right (injured side) forelimb and hindlimb of each animal. Error bars represent SEM. n.s., not significant, **p < 0.01, one-way ANOVA followed by Tukey's multiple-comparisons test. B, C, The graphs show percentage of missed step on right limbs of grid walk test at indicated days for average of each genotype (n.s., not significant, *p < 0.05, ***p < 0.005, paired t test; B) and individual animal of each genotype (C).