Review Article

The Human Vaginal Bacterial Biota and Bacterial Vaginosis

Figure 2

Comparison of vaginal bacterial species detected by broad range 16S rRNA gene PCR using two different forward primers and the same reverse primer in one sample. The pie charts show the percentages of clones in each library corresponding to specific bacterial 16S rRNA gene sequences obtained using broad range PCR followed by cloning and sequencing in a vaginal sample from a subject diagnosed with bacterial vaginosis. Data obtained using the 338f (a) primer shows a balanced representation of clones while the data obtained using the 27f (b) primer is skewed toward Atopobium vaginae. Note the absence of Gardnerella vaginalis clones in the clone library created with the 27f primer. BVAB denotes bacterial vaginosis associated bacterium.
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(a) Forward primer—338f
750479.fig.002b
(b) Forward primer—27f