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Serum cytokine levels of patients compared to control group. Serum IL-6 (A), TNF-α (B), IFN-γ (C), IL-4 (D), IL-1β (E), and TGF-β (F) concentrations in serum of NSCLC patients and healthy subjects. Serum levels of IL-6 and TGF-β in NSCLC patients are significantly higher than that of controls (P ≤0.001 and 0 ≤ 0.018, respectively).
