<p>Figure 1: MIF and HIF-<b>1</b><b>α</b> expression levels in COPD. MIF protein was measured in sputum (A; RV
cohort), serum (B) and isolated BAL macrophages (C; RV cohort). HIF-1α protein concentration was measured in isolated
BAL macrophages (D; RV Cohort). Data are
expressed as mean±SEM. *<i>p</i><0.05
and ***<i>p</i><0.001 compared to non-smoking groups. Rhinovirus Infection
(RV).</p