Expression of granzyme A and perforin by Tregs.

a: data are shown as median (range) percentage of Tregs expressing each marker. Markers were measured in 11 HIV-infected patients at wk0, and in 8 or 7 controls, for granzyme A and perforin respectively. None of these percentages were significantly different.b: data are shown as relative changes in geometric means, expressed in % (coefficient of variation). Formulas used to calculate these values are as follows: relative change in geometric means = 100*[geometric mean (post HAART/wk0)]-100; coefficient of variation = [exp(standard deviation on log scale)-1]*100. Granzyme and perforin levels at all time points post HAART were similar to wk0 values (all p>0.11, repeated measures ANOVA).