Fig. 4From: Integrated metagenomic data analysis demonstrates that a loss of diversity in oral microbiota is associated with periodontitisHeatmap and bi-clustering of subgingival samples based on phylogenetic composition of marker species. The heatmap of subgingival samples under different periodontitis states. In the dendrogram on the left side, the color of green represents healthy samples, yellow represents stable samples and red represents progressing samples. The clustering is based on the Spearman correlations of the composition of nine marker species samples, as identified by our analysisBack to article page