CD8A and neoplasm: The T‐cell promoter eIF‐2a phosphorylation level and unfolded protein response are significantly reduced in B16‐OVA tumour‐bearing mice treated with 2‐DG for 36 h, which elevates T‐cell glycolysis and ATP production and release from mitochondria, contributing to CD8+ T‐cell differentiation into Tscms.67