Accumulation of T cells, neutrophils, and dendritic cells in the back skin is potentially reduced in the SOD3-transduced MSC group. (A) Representative histogram of expression of T cells, neutrophils, and dendritic cells. Open and filled histogram represents isotype controls and cells stained with specific indicated antibodies, respectively. Total cell counts and absolute number of T cells (B), neutrophils (Gr1+ cells) (C), and dendritic cells (CD11C+ cells) (D) in the skin. Data are represented as mean ± SD. #p < 0.05, ###p < 0.001 (control group vs. IMQ-treated group for all cases); *p < 0.05, **p < 0.01, ***p < 0.001 (IMQ-treated group vs. MSC-treated group for all cases); $p < 0.05 (day 6 vs. day 12).