IFNG and neoplasm: For example, anti‐programmed death‐1 (PD‐1) antibodies were combined with Bifidobacterium bifidum strains to increase the expression of interferon (IFN)‐γ in various immune cells, thus prompting the accumulation of CD8+ T cells in the tumor microenvironment (TME).[2, 3] Such a synergistic strategy greatly enhances antitumor immunity.