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. 2014 Jun 4;9(6):e98514. doi: 10.1371/journal.pone.0098514

Figure 7. Estimation of species richness according to Chao 1 index.

Figure 7

A – African-American subjects (Red – N009, Orange – N018, Blue – N017). Diversity between subjects is significant and therefore does not allow for the grouping of the subjects for analytical purposes. B – Caucasian subjects. No significant differences in diversity were found among subjects.