TGF-β1 and cytokines serum levels in CHC patients before and after treatment with PFD. Quantitative analysis of cytokines was determined before and after PFD treatment. (A) After treatment IL-6 mean ± SEM decreased reaching statistical significance (p < 0.05). In (B) graph indicates TNF-α mean ± SEM in patients before and after treatment. (C) TGF-β1 mean ± SEM concentration of all patients after treatment (p < 0.05).