Similarly, IL-7–treated resting CD4+ T cells and untreated resting CD4+ T cells infected with the Vpx-containing HIV Duo-Fluo I both contained over 1% reactivatable provirus within their isolated uninfected cell populations, which was more than twice the size of the latent cell populations identified in these respective populations after the initial infection (Fig 1D). Here, IL7 is linked to infection.