Figure 3From: Enhanced effector function of cytotoxic cells in the induced sputum of COPD patientsRepresentative flow cytometry plot (Panel A) showing the expression of both granzyme B and perforin (Panel B) in CD8+T lymphocytes, CD56dimCD16+NK cells, CD56brightCD16-NK cells and NKT-like (CD56+CD3+) cells from HNS (n = 5), smokers (n = 10) and COPD subjects (n = 11). Double stained cells (Panel B) are deemed cytotoxic. *: p < 0.05, **: p < 0.01, ***: p < 0.001.Back to article page