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Comparison of preoperative and postoperative blood tumor biomarkers in patients with stage II-III CRC. (A) CTCs; (B) CEA; (C) CA19-9; (D) CA72-4; (E) CA125. Abbreviations: CRC, colorectal cancer; CTCs, circulating tumor cells; CEA, carcinoembryonic antigen; CA19-9, carbohydrate antigen 19-9; CA72-4, carbohydrate antigen 72-4; CA125, carbohydrate antigen 125.
