CD4+ and CD8+ T cells basal activation profile in both MSM groups.

Comparison of the percentage of (A) CD4+ and (B) CD8+ T cells expressing HLA-DR, Ki-67, CD38, and CD69 activation markers between the groups. High-risk group (n = 16), low-risk group (n = 44). All data are reported after background correction. The comparison was performed with the Mann–Whitney U-test or Student T-test according to the data distribution.