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. 2014 Apr 4;9(4):e93842. doi: 10.1371/journal.pone.0093842

Figure 4. Relative abundance of the predominant groups in anode (A) and cathode (B) samples at the genus level.

Figure 4

Relative abundance is defined as the number of sequences affiliated to a particular taxon divided by the total number of sequences per sample (%). Genera with relative abundance less than 0.5% in both libraries are defined as “others”.