CD4 and AIDS: Finally, we investigated the effect of solubilized realgar in CD4 T cells isolated from the peripheral blood of seven donors living with HIV/AIDS (Table S4, Supporting Information) with viremias suppressed by ART, i.e., a model closer to the conditions occurring in vivo.[40] Isolated CD4 T cells were treated with two different concentrations of realgar and one higher concentration of orpiment.