When each tumor core was included in the entire analysis, a significant positive correlation (r = 0.255; R2 = 0.065) was observed between the total intensity of tumor cell galectin‐9 expression and the total number of Tregs (CD4+/FOXP3+), but no significant correlations were observed for other immune cell types, including CD4+ T cells and CD8+ T cells (Figure 6H–J). The gene discussed is CD8A; the disease is neoplasm.