CD8A and neoplasm: The reduced tumor volumes, together with the promoted intratumor CD8+ T‐cell infiltration and IFN‐γ levels, were also found in Rg5/PD‐1 antibody‐treated humanized PDX model in NOD/SCID mice (Figure S7A,B), supporting the immunotherapeutic effects of Rg5‐PD‐1 combined treatment.