Fig. 2
From: Iron in airway macrophages and infective exacerbations of chronic obstructive pulmonary disease
a Relative gene expression of hepcidin in COPD patients based on stable sputum macrophage iron content. Data shown as median (IQR). HAMP hepcidin antimicrobial peptide; SHI sputum hemosiderin index. b Relative gene expression of ferroportin in COPD patients based on stable sputum macrophage iron content. Data shown as median (IQR). SLC40A1, solute carrier family 40 member 1; SHI sputum hemosiderin index. ***p < 0.001