KLRK1 and tuberculosis: Our data show that TB patients had a decreased percentage of NKG2D+CD8+ cells (median 35% IQR 28–60 vs. 28% IQR 20–38, p = 0.02; Figure 2b), but the percentage of CD8+ cells that coexpressed the NKG2A inhibitor receptor were similar in both study populations (median 2% IQR 1–3 vs. 1% IQR 1–2; Figure 2d).