Figure 3.

Fas-mediated apoptosis in uninfected and HIV persistently-infected cells. H9 and H9/HTLVIII_B (A) and Jurkat and J1.1 (B) cells were incubated with 20 g/ml or 40 ng/ml of CH11, an anti-Fas activating antibody. After 24 h, cells were washed and stained with annexin-V/PI. The percentages of annexin-V⁺, PI^- or PI⁺ cells are shown. C) Fas/CD95 and CD4 cell surface expression was analyzed by flow cytometry on H9, H9/HTLVIII_B, Jurkat and J1.1 cells.