To further confirm the critical role of IFN‐γ in Vγ4 γδ T cell anti‐tumor function, we added the STING agonist 5,6‐dimethylxanthenone‐4‐acetic acid (DMXAA) and an IFN‐γ‐neutralizing antibody to the co‐culture. Here, STING1 is linked to neoplasm.