Figure 8
Expression of IFN-γ on NK cells after their proliferation ex vivo in presence of cytokines. IFN-γ was analyzed by capture assay on natural killer (NK) cells at day 0 without cytokines, and after 7 days of culture with IL-2 or IL-15 in the presence or absence of IL-21. To determine the capacity of NK cells to produce IFN-γ, cells were subjected to stimulation by IL-12 for 12 hours under all conditions. One of three similar experiments is shown.