Figure 2: Production of cytokines by IFN-DCs. The results are expressed as M ± S.E. The levels of IFN-γ, TNF-α, IFN-α, IL-18, IL-6 and IL-10 in 5-day DC culture supernatants were determined by ELISA in healthy donors (n=20) and TB patients (n=40), including PPD-reactive (PPD+; n=24) and PPD-anergic patients (PPD; n=16). *-pU<0.05 vs healthy donors; #-pU<0.05 vs PPD-reactive patients.