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Changes in serum proteomic features before and after surgery by SELDI-TOF-MS. Zoom-in spectrum of m/z 3324 a and m/z 4795 b in 10 pairs of HCC serum samples before (left panel) and 3 months (right panel) after surgery. The specific proteomic features were indicated by red lines. The lower panel was the normalized intensities of the specific peak in the preoperative group plotted against the postoperative group, and the statistical significance was calculated by t test
