Fig. 5From: Characteristics of the sputum microbiome in COPD exacerbations and correlations between clinical indicesThe differences in metabolic pathways by PICRUSt functional analysis. a Related KEGG pathways are plotted as a bar graph at KEGG level 2 between two groups. b Comparison of functional analysis in healthy controls and COPD patients at different stages at KEGG level 3Back to article page