Fig. 4

Correlations between IDO1 expression and CSE expression, CD11b⁺ myeloid cell number or CD8⁺ T cell number in HCC patients. a The representative immunostaining for IDO1, CSE, CD11b⁺ myeloid cells and CD8⁺ T cells (× 200 magnification) in the tumor (Tumor, T-) and adjacent non-neoplastic tissues (Liver, L-) of HCC patients. b Correlations between IDO1 expression (N = 9) and CSE expression (N = 9), CD11b⁺ myeloid (N = 9) cell number or CD8⁺ T (N = 7) cell number in the tumor (Tumor, T-) tissues of HCC patients. The left panel of each figure illustrates scatter gram with its Spearman correlation coefficient and P value. The right panel of each figure shows the heatmap. c Correlations between IDO1 expression and CSE expression, CD11b⁺ myeloid cell number or CD8⁺ T cell number in adjacent non-neoplastic tissues (Liver, L-) of HCC patients. N = 9. The left panel of each figure illustrates the scatter gram with its Spearman correlation coefficient and P value. The right panel of each figure shows the heatmap