Comparison of fractions of T cells and NK (CD56⁺) cells from healthy EBV-seropositive patients who respond to autologous LCL. (A) Dotplot depiction of IFNγ-producing cells after application of gates on CD8⁺, CD4⁺, and γ-δ TCR⁺ cells. The percentages in the right upper quadrants indicate the fraction of the cell type that produced IFNγ. (B) Larger fractions of circulating γ-δ T cells, and NK cells than those of circulating CD8⁺ and CD4⁺ T cells respond to autologous LCL in healthy EBV-seropositive patients.