Fig. 1From: miR-34a in serum is involved in mild-to-moderate COPD in women exposed to biomass smokeOverview of the study design strategy. Abbreviations: COPD-TS, COPD due to tobacco smoke; COPD-BS, COPD due to biomass smoke. H-BS, women exposed to BS without COPD. COPD-TS, COPD women exposed to TS without COPD. C, control womenBack to article page