Fig. 4

The correlation between the number of TIL subsets in the primary tumor and that in the metastatic tumor (a: CD4, b: CD8, c: FOXP3). The numbers of CD4⁺, CD8⁺ and FOXP3⁺ TILs in the primary tumor was significantly associated with those in the metastatic tumor (r = 0.634, p = 0.001, r = 0.700, p < 0.001, r = 0.559, p = 0.006, respectively)