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Comparison of immune function. (A) Comparison of CD3+. (B) Comparison in CD4+. (C) Comparison in CD8+. (D) Comparison in CD4+/CD8+. (E) Comparison between the two groups in NK cells. *P<0.001 vs. the group before surgery; #P<0.001 vs. the group 1 day after surgery; vP<0.001 vs. the research group at the same time point. NK, natural killer.
