The frequency of CD16^pos NK cells increases with the duration of ART.

<p>A-B) The frequency of CD16^pos NK cells correlates with the duration of ART in years and with relative GzB activity. The total NK cell percentages and NK cell subsets are expressed as a percentage of the total lymphocytes. Linear regression curves with 95-confidence intervals are indicated. C) The individuals who had been treated for 5 years or more had significantly increased frequencies of CD16^pos NK cells compared to the individuals who had been treated for less than 5 years.