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. 2014 Dec 17;211(12):1943–1952. doi: 10.1093/infdis/jiu815

Figure 1.

Figure 1.

Preexposure prophylaxis (PrEP) does not modify the magnitude of human immunodeficiency virus–specific CD8+ and CD4+ T-cell responses. A, Magnitude of CD8+ T-cell responses was measured as the frequency of interferon (IFN) γ and CD107a dually producing cells. B, Magnitude of CD4+ T-cell responses was measured as IFN-γ and tumor necrosis factor (TNF) α dually producing cells. Cell frequencies for PrEP and placebo groups are shown on stimulation with Env, Gag, and Tat PTE peptide pools.