Fig. 2: Metagenomic sequencing-based exploration of COPD-associated (nā=ā28) faecal microbiomes supports distinction from those of healthy individuals (nā=ā29).

a Multivariate sparse partial least-squares discriminant analysis (sPLS-DA) of read-mapping-based relative abundance at the genome level of the faecal microbiome, filtered for genomes with minimum 0.05% relative abundance in at least one sample. b Genomes contributing to separation along with component 1 of sPLS-DA from (a). Bar length indicates loading coefficient weight of selected genomes, ranked by importance, bottom to top; bar colour indicates the group in which the genome has the highest median abundance, redā=āCOPD, blueā=āhealthy. c Heatmap of discriminatory genomes along component 1 of sPLS-DA from (a). Data are centred with log-ratio-transformed relative abundance.