For the P207S mutant, viral infection was inhibited by 2.7-folds in MxB expressing cells, 1.5-folds in Tat-NLS-MxBΔ(1–25) expressing cells, and 15.7-folds in Rev-NLS-MxBΔ(1–25) expressing cells (Figure 6B). This evidence concerns the gene TAT and viral infectious disease.