Alteration of intestinal microbiota is associated with diabetic retinopathy and its severity: Samples collected from southeast coast Chinese

Figure 3 Beta diversity analysis of microbiota in the six groups. A and B: Weighted and unweighted PCoA between between Group DM and Group C; C and D: Weighted and unweighted PCoA between between Group DR and Group D; E and F: Weighted and unweighted PCoA between between Group PDR and Group NPDR. Differences were assessed by Adonis. Group C: Samples with non-diabetics; Group DM: Samples with diabetics; Group DR: Samples with diabetic retinopathy; Group D: Samples without diabetic retinopathy; Group PDR: Patients with proliferative diabetic retinopathy; Group NPDR: Patients without proliferative diabetic retinopathy.