Fig. 2From: Microbiota analysis optimization for human bronchoalveolar lavage fluidTaxonomic composition and alpha diversity indices of mock communities. a Histograms displaying the relative abundance of bacterial species from the mock community members versus contaminants over a range of input bacterial density. b Alpha diversity indices measured for mock communities at each input bacterial density. The solid line indicates the average value, for each input density. ml = millilitreBack to article page