CD45RA and CD27 coexpression by BMLF1- and pp65-specific CD8⁺ T cells. (A) Representative profiles of CD45RA and CD27 coexpression by BMLF1 tetramer⁺ (left) and pp65 tetramer⁺ (right) CD8⁺ cells. (B) Percentage of CD45RA⁺CD27⁺, CD45RA^–CD27⁺, CD45RA^–CD27^–, and CD45RA⁺CD27^– cells among BMLF1- and pp65-specific CD8⁺ T cells from 8 EBV- and CMV-seropositive HLA-A2 donors.