CD96 and HIV-1 infection: To determine if the CD96 expression was changed during HIV-1 infection, we assessed CD96 expression by CD8+ T cells in elite controllers (EC) (mean 961 CD4+ T cells/mm3 and < 50 RNA copies/ml), HIV-1 non-controllers (NC) (mean 536 CD4+ T cells/mm3 and mean 68,049 RNA copies/ml) and healthy controls (HC).