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. 2012 Sep 29;4(9):648–659. doi: 10.18632/aging.100490

Figure 2. IL-21 secretion is increased from CD4+ T cells from aged subjects.

Figure 2

A, B, C Bar graph depicts the levels of IL-21 (A), IFN-γ (B), IL-17 (C) in the supernatant from aged and young total CD4+ T cells after stimulation with IL-12 for 5 days. Data is mean +/− S.E. of 23 different aged and young subjects. D, F. Bar graph depicts the levels of IL-21 secreted from aged and young, Naïve CD4+ T cells (D) and memory CD4+ T cells (F) after stimulation with IL-12 for 5 days. E, G. Bar graph depicts the levels of IL-21 secreted from aged and young, Naïve CD4+ T cells (E) and memory CD4+ T cells (G) after stimulation with IL-12 for 5 days. Data is mean +/− S.E. of 15 different aged and young subjects.