Upon infection with a HCMV variant expressing GFP under the control of the major immediate early promotor (HCMV-GFP) siRNA-treated monocyte-derived DC and MΦ mounted significantly reduced IFN-α responses (Fig 7B and 7C), while irrespective of siRNA-treatment they showed overall similar percentages of HCMV-GFP+ cells (Fig 7C). This evidence concerns the gene IFNA1 and infection.