Figure 2From: Molecular analysis of the diversity of vaginal microbiota associated with bacterial vaginosisRarefaction curves were used to estimate richness (in this case the number of taxa at a 3% dissimilarity level) among BV-positive and BV-negative groups. 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