Fig. 1
From: Effect of age and sex on immune checkpoint expression and kinetics in human T cells
Absolute cell counts in peripheral blood of young and older healthy adults. Absolute cell counts of total lymphocytes, CD3+, CD4+ and CD8+ T cells, NK cells and B cells were determined by TruCount. Horizontal bars reflect median values. Light pink areas represent values outside the reference range. Reference values were provided by the department of Laboratory Medicine (UMCG). Solid circles represent females and open circles represent males. The Mann-Whitney U test was used for comparisons between young (YA, n = 14) and older adults (OA, n = 14). P-values are indicated in the graphs