... it is involved in the main-tenance of an ongoing Th1 response rather than part of the initial immunological decision-making process. In the current study, the finding that production of IL-12depends ... IL-12 and IFN-γ levels in vitro In both cases of cell activation, testing the relationshipbetween the levels of IL-12p70 and IFN-γ released by cellsexposed to either Cd or Hg indicates that they ... overlapping sets of cytokines: the common precursor Th0 secrete cytokinesincluding IL-2, IL-4, and IFN-γ; Th1 cells produce IL-2,IFN-γ, TNF-β, and low levels of IL-10 (only in human); and Th2 cells...