Fig. 3.

TBI favors M2 macrophages and type H vessels infiltration through sympathetic nerve. a–d Representative IF staining images and quantitative analysis of M2 macrophages in the callus area in 4-month-old male mice. Scale bar: 200 μm. e–h Representative IF staining images and quantitative analysis of type H vessels in the callus area in 4-month-old male mice. Scale bar: 200 μm. All data are presented as means ± standard error of the mean (SEM). *P < 0.05, **P < 0.01, and ***P < 0.001, ns: not significant. Statistical significance was determined by two-way ANOVA