Figure 6

Subgroup analyses. The expression of OX40L on mDCs, the expression of PD-L1 on pDCs and the OX40L/PD-L1 ratio is shown for the subgroups of patients with spirometric GOLD stages II (n = 14), III (n = 26) and IV (n = 14) (Panel A-C) and for the subgroups of current smokers with COPD (n = 12) and former smokers with COPD (n = 42) (Panel D-F). There were no significant differences between the subgroups for each parameter.