Figure 2

CD56+ NK cells and perforin+ and granzyme A+ CD56+ cells decline with age in healthy subjects. Scatter plots showing correlations between age at time of sampling and frequencies of (a) CD56+ NK cells expressed as percentage of live cells (HC n = 65, JSLE n = 42), NK cells expressing (b) perforin and (c) granzyme A (HC n = 42, JSLE n = 37) in healthy controls and JSLE. Spearman’s rho correlation coefficients and the associated p-values are shown.