Fig. 5

Correlation networks of intestinal bacterial community. Correlations between bacteria were analyzed by Spearman correlation analysis. A Correlation networks of abundance are shown, in which each node represents an OTU, its color represents the bacterial phylum and its size indicates the number of direct edges. Edges suggest the magnitude of distance correlation (positive in green, negative in red). Only OTUs presented in > 1/3 of all samples would be taken into account. The table in the middle panel shows the parameters of network. The relative connectivity of networks was calculated as the ratio of the number of significant interactions to the number of nodes in the correlation network. B Quantification of neighbor amount in Sham, SBS and GLP2.SBS; means and SEM are marked in red. ***p < 0.001. avg., average