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(A) The expression of F. nucleatum in 45 pairs of ESCC and adjacent normal tissue in the training cohort, and (B) in 48 pairs of the validation cohort. (C) The relative amount of F. nucleatum in 207 ESCC tissue according to T category in training cohort, and (D) in 344 ESCC tissue in validation cohort. *p<0.05; **p<0.01, ***p<0.001
