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. 2014 Mar 27;8(9):1879–1891. doi: 10.1038/ismej.2014.28

Figure 3.

Figure 3

Hierarchical clustering analysis of all detected genes in all 37 samples. Results were generated by CLUSTER and visualized by TREEVIEW. Red indicates signal intensities above background, whereas black indicates signal intensities below background. Brighter red coloring indicates higher signal intensities. The groups 1–6 contained functional genes from different functional gene families, but showed different patterns between healthy and diseased groups. The y axes in the right panel indicate the sum of normalized signal intensity of each group of genes detected. H, healthy control; MP, moderate periodontitis; SP, severe periodontitis.