The effects of TCDD and rapamycin on the expression of oxidative stress-related factors. mRNA and protein expressions change in mouse skin tissue after treatment with vehicle control, IMQ, IMQ + TCDD, and IMQ + Rapa, or IMQ + TCDD + Rapa. (A–C) qPCR and (D) Western blot analyses of NOX2, NOX4, and Nrf2 expressions in mice treated with 5 different regimens (n = 5 per group). qPCR data represent the mean ± SD of three independent experiments (each performed in duplicate). Statistical differences were determined by one-way analysis of variance (ANOVA) with Dunnett’s post hoc test. * p < 0.05; ** p < 0.01; *** p < 0.001. Western blot normalization was based on GAPDH. Western blot data are representative of three independent experiments. Rapa: rapamycin; IMQ: imiquimod.