MAT2B and infection: To assess the potential effects of Lentivirus vectors RNAi-mediated MAT2A and MAT2β silencing on cell growth, LV-siMAT2A, LV-siMAT2β and LV-siMAT2A/2β were transfected into respectively, 72 hours after infection at multiplicity of infection of 25 through estimating GFP expression under a fluorescent microscope (Figure 1).