Fig. 3

Expression of proinflammatory cytokines in non-stimulated NK cells of the oldest seniors (aged over 85), the old aged under 85 and the young. Data are presented as means ± SEM and concern expression of the studied cytokines in NK cells demonstrated as percentages of cells with expression of a particular cytokine (%) or mean fluorescence intensity (MFI). The same * symbols over bars denote statistically significant differences between NK cells of different age groups. a. Expression of TNF (%). b. Expression of TNF (MFI). c. Expression of IFN-γ (%): * p = 0.02. d. Expression of IFN-γ (MFI)