Fig. 4From: Taxonomic classification for microbiome analysis, which correlates well with the metabolite milieu of the gutCorrelation between the PC1 score of the metabolome and that of the microbiome. Scores for each principal component 1 (PC1) of the metabolome and microbiome were plotted in the X-Y axis, followed by calculation of Pearson’s product-moment correlation coefficient. a PC1 of classification data by RDP classifier. At the genus and family levels, a stronger correlation (r > 0.7) between the PC1 of the metabolome and microbiome was observed compared to the case of phylum, order, or class. b PC1 of family-, genus-, and species-level classification data after OTU-based analysisBack to article page