Fig. 3.
Flow cytometric analysis of fas expression on target cells. T1, Jurkat, 352-BLCL, and uninfected and HIVIIIB-infected CD4 T-cell blasts (negatively selected for CD4 expression) were stained with fas antibody ZB4 and FITC-conjugated anti-mouse IgG. The unfilled histogram depicts staining with isotype-matched control antibody. Fas expression is upregulated on HIV-infected CD4 T-cell blasts compared with uninfected blasts.