Figure 2.

LLLT partly repels the M1 predominated polarization state and induces a relative elevated M2 expression. (A) M2 cell (Arg1⁺CD11b⁺) numbers per mm² section compared between the two groups at different time points. (B) M1 cell (iNOS⁺ CD11b⁺) numbers per mm² section compared between the two groups at different time points. (C) M2/M1 ratio at each time point. (D) Each band of the target protein (Arg1 and iNOS) and internal control (GAPDH) according to western blot analysis. (E) Time course of relative band density of Arg1. (F) Time course of relative band density of iNOS. 1 dpi, 3 dpi, 7 dpi, and 14 dpi refer to 1, 3, 7, and 14 days post-injury, respectively. (For IF: 5 measurements per section and 2 sections per rat with 3 rats per group; for WB: n = 3 rats per group *P < 0.05; **P < 0.01, compared with control).