Fig. 1.

Comparison of natural killer (NK) cell subsets in the peripheral blood of human immunodeficiency virus(HIV)-infected patients and healthy controls. (a,b) Gating of NK cells subsets in representative subjects is shown. NK cells from chronic viraemic HIV-1-positive individuals [CD14^negCD3^neg peripheral blood mononuclear cells (PBMC) gate] were classified into three subsets: CD16^posCD56^dim, CD56^bright and CD16^posCD56^neg. (c–f) The expression levels of total NK cells and the CD16^posCD56^dim, CD56^bright and CD16^posCD56^neg subsets, respectively, in former plasma donors (FPDs) with different groups and in healthy controls.