Fig. 3From: The effects of corticosteroids on COPD lung macrophages: a pooled analysisSigmoidal curve fitting of group mean data. The group mean data for dexamethasone inhibition of TNF-α (a), IL-6 (b) and CXCL8 (c) are shown for never smokers (NS; blue plot), smokers (S; green plot) and COPD patients (red plot)Back to article page