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. 2013 Jun 3;4:106. doi: 10.3389/fmicb.2013.00106

Figure 8.

Figure 8

Hierarchical cluster analysis of relative abundances of genes in TIGRFAMs associated with “Energy Metabolism” classified by functional category. Data was standardized by functional category before clustering to avoid biasing analysis by a few categories with high gene abundance. Pearson correlation was used as the distance measure for average linkage agglomerative clustering.