Fig. 1

Correlation between sputum and blood eosinophils expressed as percentage (a-b) or absolute count (c-d) in COPD (a-c) and asthma (b-d)
Correlation between sputum and blood eosinophils expressed as percentage (a-b) or absolute count (c-d) in COPD (a-c) and asthma (b-d)