Fig. 2.

Representative images of H&E and immunohistochemical staining from one case showing low TIL and the other case showing high TIL. The case with low TIL infiltration also shows a low level of CD4⁺, CD8⁺, CD56⁺, CD57⁺, GNLY⁺, and GZMB⁺ cell infiltration. On the other hand, the case with high TIL infiltration shows abundant CD4⁺, CD8⁺, CD56⁺, CD57⁺, GNLY⁺, and GZMB⁺ cell infiltration. Each circle represents one high power field