To next analyze the effects of TNF‐α derived from GC tumors on the activation and B7‐H2 expression of/on neutrophils, we added TNF‐α blocking antibody into TTCS/neutrophil co‐culture, and TNF‐α blocking significantly inhibited neutrophil CD54 and B7‐H2 expression (Figure 4D; Figure S5C). Here, TNF is linked to gastric cancer.