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. 2013 Apr 10;3:1643. doi: 10.1038/srep01643

Figure 4. Heatmap showing the abundance and distribution of operational taxonomic units (OTUs at 98% threshold similarity) for 25 16S rRNA gene clone libraries of MTB communities that are compared in this study.

Figure 4

The abundance of each OTU in each library is indicated by different colors. On the left-hand side, a neighbor-joining phylogenetic tree shows the phylogenetic relationship between OTUs.