Myeloid cells labeled in lysM-Cre mice are representative of the general macrophage population after SCI. A–T, We performed SCI on lysMtdTom→WT chimera mice and assessed the injury site using flow cytometry to determine whether macrophages labeled in lysMtdTom mice (CD11b+/tdTom+; B, red) were representative of the general macrophage population in the injury site (CD11b+/CD45hi; A, circled region). Except for a slight difference in Ly6C+ cells at 14 d after SCI, macrophages labeled in lysMtdTom (red bars) mice did not differ from the general macrophage population (gray bars) in the percentage of cells that expressed Ly6G, CD11c, CD86, CD206, or CD43 at both 7 and 14 d after SCI. *p < 0.05 using Student's unpaired t test. n = 5 biological replicates per group. Error bars indicate SEM.