In addition, the median fluorescence intensity (MFI) of TIGIT+NK cells that expressed TNF-α, CD107a, and IFN-γ was significantly weaker than that of TIGIT−NK cells (Figures 6F–H, all P < 0.05) in both HIV-1-negative donors and HIV-1-infected individuals at different stages of infection. This evidence concerns the gene LAMP1 and infection.