In the original article, there was a error in the legend of Figure 1 as published. In the original manuscript we neglected to cite in the legend of Figure 1 the article from which the figure was taken and adapted. The correct legend appears below.
Figure 1. Cell cycle analysis of antigen-specific CD8 T cells in the blood after vaccination. Female Balb/c mice were primed and boosted with viral vectors expressing the model antigen gag of HIV-1. At days (d) 3, 7, and 44, post-boost blood was collected and blood cells were analyzed with our new method. The figure shows a typical ki67/DNA staining profile of gag-specific CD8 T cells in the blood. Fluorescence Minus One (FMO) controls (left) and Ki67 staining (right) are shown, as indicated; the numbers represent the percentages of cells in the corresponding quadrant. Figure adapted from (30).
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.