Figure 4. Aging-associated immunological analyses. Peripheral blood leukocytes were analyzed using a ten-color polychromatic flow cytometer. (A) T cells. (B) Ly6C+ T cells. (C) B cells. (D) Granulocytes. (E) Ly6C+ monocytes. (F) Natural killer (NK) cells. (G) Ly6C+ NK cells. Data are represented as the mean ± SEM. *P < 0.05 compared with the control group (n=7-10, t-test two tailed).