Furthermore, we further explored through IHC technology and found that after pLV-THM-miR-760 intervention, the number of IDO1+ cells was lower than that in pLV-THM-miR-NC group, and that of CD8+ T cells in tumor tissues after pLV-THM-miR-760 intervention was obviously higher than that in the pLV-THM-miR-NC group. This evidence concerns the gene IDO1 and neoplasm.