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. 2021 Oct 27;8:686313. doi: 10.3389/fmolb.2021.686313

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Copyright © 2021 Jiao, Cao, Li, Hu, Gong, Wang and Jin.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Overall survival (OS) curves according to preoperative and postoperative CEA level. (A) K-M curve for OS in patients with normal vs. elevated preoperative CEA. (B) K-M curve for OS in patients with normal preoperative or normalized postoperative CEA vs. elevated postoperative CEA. (C) K-M curve for OS in patients with different subgroups. (D) K-M curve for OS in patients with different subgroups using a CEA cut-off of 10 ng/ml. ^aGroup A vs. Group B, p = 0.016; Group A vs. Group C, p < 0.001; Group B vs. Group C, p < 0.001. ^bGroup A vs. Group B, p < 0.001; Group A vs. Group C, p < 0.001; Group B vs. Group C, p = 0.048.