Fig. 1

Immune cell composition in gastric cancer with an emphasis on NK cell-associated markers. CD57- T cells, CD57 + T cells, CD57 + NK cell, non-T/NK immune cells are presented as green, yellow, red and blue color (A). Tumor and stromal area were marked dark green and black color, respectively. The proportion of T cells, B cells, macrophages, and CD57 + NK cells is as depicted (B). The proportion of each immune cells in each case is illustrated (C). Among CD45 + CD57 + immune cells, CD57 + T cells and CD57 + NK cells constituted 80% and 20%, respectively (D). The proportion of CD57 + T cells and CD57 + NK cell among CD45 + CD57 + immune cells in each case is illustrated (E). A total of 55.1% and 27.9% of T cells showed CD16 and NKG2A expression (F). A total of 59.3% and 14.8% of CD57 + NK cells expressed CD16 and NKG2A (G)