Figure 1

Percentages of dendritic cells in peripheral blood. Upper panel: percentages of plasmacytoid DCs (A) and myeloid DCs (B) among blood leukocytes of 21 never-smokers (Never-smoker), 21 smokers with normal lung function (Smoker) and 54 patients with COPD (COPD). Lower panel: percentages of plasmacytoid DCs (C) and myeloid DCs (D) in those 27 COPD patients without at least 2 elevated markers of systemic inflammation (no systemic inflammation) and those 27 COPD patients with at least 2 elevated markers of systemic inflammation (systemic inflammation).