Fig. 1From: Relationship between the respiratory microbiome and the severity of airflow limitation, history of exacerbations and circulating eosinophils in COPD patientsGenera showing significant differences in their relative abundance according to GOLD severity level, with higher figures for Treponema in GOLD 1 (b) and for Pseudomonas in GOLD 4 (a) (dotted line = median)Back to article page