3-HAA suppresses IL-17 production by NKp44⁺ NK cells in vitro in a dose-dependent manner. Mononuclear cells isolated from mesenteric lymph nodes of SIV-naive rhesus macaques were cultured in the presence of increasing concentrations of 3-HAA for 24 hours and then mitogen-stimulated. NKG2A⁺ (A) and NKp44⁺ (B) NK cells were analyzed functionally as shown in Figures 1 and 6. Means ± SEM for 3 animals are shown.