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Fig. 2 | Immunity & Ageing

Fig. 2

From: Changes in blood lymphocyte numbers with age in vivo and their association with the levels of cytokines/cytokine receptors

Fig. 2

Rate of CD8+ T cells and subsets change with age in vivo. a Rate of CD8+ T cells in peripheral blood in number of cells per μl blood (N = 162). The rate of CD8+ T cells was calculated based on flow cytometry analysis using the gating strategy described in (Additional file 1: Figure S1) and lymphocyte counts from complete blood counts. b Rate of naïve CD8+ T cells in CD8+ T cell in cell number per μl blood (N = 159). Naïve CD8+ T cell were defined by CD45RA+/CD28+. c Rate of CD8+CD28- T cells in CD8+ T cell in cell number per μl blood (N = 162). d Ratio of CD4+/CD8+ T cells (number of cells/μl) as a function of age (N = 162). P values were calculated by linear regression in this and subsequent figures

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