Figure 5. Frequencies of activated T cells after progesterone treatment and IV SIVmac239 challenge.

A) Percent of CD3⁺ CD4⁺ T cells expressing CD38 but not HLA-DR in PBMC. B) Percent of CD3⁺ CD8⁺ T cells expressing CD38 but not HLA-DR in PBMC. D) Percent of CD3⁺ CD8⁺ T cells expressing Ki-67⁺ in PBMC. E) Percent of CD3⁺ CD8⁺ T cells expressing caspase-3⁺ in PBMC. (○) SHIV-immunized macaques (n = 5) and (5) Depo-Provera®-treated, SHIV-immunized (n = 6).