Vaginal bacterial communities. Heat-map constructed by normalising the number of 16S rRNA gene copies/ml UTM for vaginal bacteria in 177 women from Greenland with or without BV. Nugent scores are shown in the vertical column. The scale bar represents the Euclidean distance, corresponds to 50,000 and is calculated after Pythagorean metric. The colour key shows colour code and corresponds to normalised geq/ml UTM for each bacterium. The vertical red line indicates the level that was chosen for defining the clusters.