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Comparison of serum tumor markers between the two groups. After treatment, the levels of VEGF (A), EGF (B) and TGF-β (C) decreased significantly in the two groups, and their levels in the research group were significantly lower than those in the control group. Note: ***P<0.001; VEGF, vascular endothelial growth factor; EGF, epidermal growth factor; TGF-β, transforming growth factor β.
