Figure 4: PCA based on dominant bacteria of PC1 (Firmicutes and Verrumicrobia) and of PC2 (Proteobacteria, Actinobacteria and Bacteroides) illustrating grouping of type 2 diabetic samples (ellipse), as a result of a higher ratio of Firmicutes:Bacteroidetes in type 2 diabetics, lower abundance of Verrumicrobia and higher abundance of Proteobacteria.