Fig. 2.

Absence of proliferative responses to recombinant HIV-1 antigens, recall antigens, mitogens and IL-2 in patients with advanced HIV-1 disease on highly active anti-retroviral therapy (HAART) (upper panel). Peripheral blood mononuclear cells (PBMC) were incubated with the indicated stimuli for 6 days and ³H-thymidine incorporation was measured. Proliferation of uninfected control cells is shown for comparison (results from a representative control are shown; lower panel).