Fig. 4

Box-plot representation of the percentage of B and T lymphocyte attenuator (BTLA)+/CD4+ T cells (A) and mean of fluorescence intensities (MFI) of BTLA+ on CD4+ T cells (B) according to outcome. Data are shown as box plot with medians (lines inside boxes), 25th and 75th quartiles (limits of boxes) and whiskers indicate the range. The median of the percentage of BTLA+/CD4+ T cells or its MFI were higher in survivors (n = 139) than in non-survivors (n = 88)