CD7 expression in CD8 T cells versus patient status. CD7 profile of the CD8 T-cell compartment was assessed by 4-color flow cytometry, and the distribution between CD7^high, CD7^low, and CD7^negative subsets was determined in adult subject groups: Fast disease progression (▪, n = 9), slow disease progression (▤, n = 10), subjects on ART with incomplete viral suppression (, n = 5), subjects on ART with complete viral suppression (▨, n = 11), and healthy control subjects (□, n = 23). Mean and standard error are shown. ^*P < .05 and ^**P < .005 as determined by the t test or, if normality test failed, the Mann-Whitney rank sum test.