Percentages of CMV-, EBV-, and FLU-specific CD8⁺ T cells in the PB and LNs. (A) CMV-, EBV-, and FLU-specific CD8⁺ T cells in the PB compared with the LNs. The dot plots are gated on CD3⁺ lymphocytes. For each virus, representative plots of 2 different viral epitopes are demonstrated: CMV pp65-epitope and IE-epitope, EBV BZLF-epitope and EBNA epitope, and FLU matrix protein (MP) epitope and nucleoprotein (NP) epitope. PB and LNs are paired samples and all data are derived from 1 patient. (B) Comparison of the percentages of PB- and LN-derived CMV-, EBV-, and FLU-specific cells within total CD8⁺ T cells. Paired samples were analyzed using the Wilcoxon signed-rank statistical test. (C) Comparison of the mutual proportion of CMV-, EBV-, and FLU-specific cells within the PB and LNs. Statistical analysis was done by the Mann-Whitney U test.