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. 2014 Mar 27;9(3):e92940. doi: 10.1371/journal.pone.0092940

Figure 2. α-diversity with reference to pH.

Figure 2

The α-diversity between dentine caries samples from acidic to neutral conditions from phylogenetic analysis (a) and the number of OTUs (b). The number of OTUs was determined from samples that contained 1000 sequences and only included OTUs which occurred above five times.