CDDO-EA reduces CCl4-induced fibrosis without altering CYP2E1 levels compared with CCl4 treatment. A, mRNA and protein expression expression of CYP2E1 was assessed at 30 weeks post CCl4 treatment versus CCl4 + CDDO-EA. Histogram depicts relative density units of protein expression. B, Acute effect of CCl4 was assessed with measurement of ALT, mRNA and protein expression expression of CYP2E1. Protein expression was assessed via Western blot analysis. Data are presented as mean ± SE (n = 10 per group). Each experiment was performed in duplicate. *P < .05, **P < .01, ***P < .001.