Fig. 2: Microbial composition of a supragingival plaque community cultured in vitro under 5% CO2 and anaerobic culture conditions.

A Principal-coordinate analysis (PCoA) of Bray-Curtis distances of both biofilm and planktonic plaque communities. B Linear discriminant analysis effect size (LEfSe) of biofilm dental plaque communities. The bar graph of LDA scores shows the taxa (OTU: Operational Taxonomic Unit) with a statistical difference (Wilcoxon test: p < 0.004) between 5% CO2 and anaerobic communities (Only taxa meeting a LDA significant threshold > 4 are shown).