Figure 2

Cytokine production following 16 hour exposure of PBMC to HCV proteins. Freshly isolated PBMC from HIV-infected, HCV-infected, HIV/HCV co-infected and uninfected controls were incubated for 16 hours with HCV proteins, then analyzed by intracellular flow cytometry for cytokine production as shown in representative plots. Selective IL-10 production by a small subset of CD3- PBMC with lymphoid scatter characteristics occurred in each case.