Figure 1: CD4+ T naive and memory cells in HS and PD patients.

Cells are shown as absolute numbers (panels a,b) and as percentage of total CD4+ T cells (c,d). Data are shown as medians with 25°–75° percentiles (boxes) and min-max values (whiskers). Comparisons are shown between HS and PD patients as a whole (a,c) and between drug naive (PD-dn) and drug treated (PD-dt) patients (b,d). Differences were analyzed by means of two-tailed Student’s t test or by Mann-Whitney test, as appropriate. P values less than 0.05 are indicated in the graphs.