Fig. 7From: Gut microbiota composition and functional prediction in diarrhea-predominant irritable bowel syndromePCoA analysis. a IBS-D, b HCs. The x-coordinate represents one principal component, the y-coordinate represents another principal component, and the percentage represents the contribution of the principal component to the sample difference. Each point in the diagram represents one sample, and samples from the same group are represented in the same colorBack to article page