Figure 2From: Pyrosequencing analysis of the human microbiota of healthy Chinese undergraduatesRarefaction curves were used to estimate richness (in this case the number of taxa at a 3% dissimilarity level) among nasopharynx, saliva, dominant hand and feces from healthy Chinese undergraduates. The vertical axis shows the number of OTUs that would be expected to be found after sampling the number of tags or sequences shown on the horizontal axis.Back to article page