Surface expression of DIL analyzed in uninfected and HHV-7–infected SupT1 cells by immunofluorescence staining revealed by flow cytometry.

Representative analysis of surface TRAIL (A), CD95L, and TNF-α (B) performed 8 days after infection is shown. Control (unshadowed) histograms represent the background fluorescence obtained from the staining of the same cultures with an isotype-matched control mAb. On the left side of panel A and in all of panel B, the unshadowed histograms are not visible because they are completely overlapped by the shadowed histograms. In panel A, a shift of the shadowed histogram along the x-axis illustrates the increased level of TRAIL expression in HHV-7–infected cultures. Data shown are from a single experiment representative of 5 independent experiments with similar results.