In these tissues, IL-7 also increased the fraction of Ki-67-positive uninfected CD4+ T cells on average 7.1±1.2 fold, from 0.7±0.1% to 5.2±1.5% of CD8− p24gag− T cells for HIV-1LAI.04 (n = 6, p<0.0001), and 6.7±1.2 fold, from 0.8±0.1% to 5.9±1.6% of CD8− p24gag− T cells for HIV-1BaL on day 9 post infection (n = 6, p<0.001). Here, CD4 is linked to infection.