GFI1 and infection: Infection of these cells with HCMV showed that whereas the knockdown of EZH2 inhibits IE1 expression (Fig. 5A2 lanes 1 and 3) and permissiveness to infection (Fig5A3, first and third bar), the knockdown of GFI1 does not affect either (Fig.5A2, lanes 1 and 2 and5A3, bars 1 and 2).