TLR ligands induce high level CD69 expression on CD8+ T cells and Ki- 67 expression in CD4+ T cells.

<p>Intracellular expression of Ki-67 (A) and surface expression of CD69 (B) were monitored after 7 days of cell culture in medium or with the stimuli as indicated. Bars represent means and the lines standard errors of the mean (SEM) of 15 separate experiments using PBMC of healthy controls. Black boxes = CD4+ T cells and gray boxes = CD8+ T cells. * = nominally significantly different (p<0.05 by Wilcoxon Sign Rank test when compared to results obtained in medium alone.