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DNA binding actitiy of STAT3 in ear or back skin. DNA binding actitiy of STAT3 in ear skin (a) and back skin (z) were measured by EMSA, and densities of EMSA bands were quantified (b, d) following the procedure described in Materials and methods. Data shown are mean ± SD (n = 2). *P < 0.05, significant difference compared to the control group. #P < 0.05, significantly different compared to UVB exposed group
