CCR6⁺ T cells that had completely lost CFSE labeling after stimulation with autologous DCs and anti–IL-10 antibodies for 7 d were sorted, expanded with recombinant IL-2, and tested for cytokine production (TNF, IFN-γ, or IL-2) after restimulation with autologous monocytes in the absence or presence of TT, purified protein derivate (PPD), influenza hemagglutinin (Flu), or MelanA. −, cytokine responses <0.1% over control; +, cytokine responses between 0.1 and 1% over control; and ++, cytokine responses >1% over control. n.d., not done.