Bystander adjuvant activity of soluble factors released by PhAg-stimulated Vδ2 T-cell lines. (A) The expression of CD86 and HLA-DR on monocytes were compared between unstimulated and CM-Vδ2–treated PBMCs from pediatric, age-matched HDs (n = 10). Differences between unstimulated and CM-Vδ2–stimulated cells were evaluated by Wilcoxon paired test ∗P < .05. (B) The frequency of CMV-specific T cells was compared between unstimulated and CM-Vδ2–treated PBMCs from pediatric, age-matched HDs (n = 10). Differences between unstimulated and CM-Vδ2–treated PBMCs were evaluated by Wilcoxon paired test ∗∗∗∗P < .001; ∗∗P < .01.