Figure 2. SC induces M2 macrophage. The expression level of (A) IL-1β, (B) TNF-α, (C) TGF-β, and (D) IL-10 was detected by ELISA assay. Immunofluorescence determined the expression level of M1 marker (E) and M2 marker (F). Scale bars = 50 μm. (G) The protein expression level of iNOS was determined by Western blotting. *P < 0.05; **P < 0.01.