Figure 6.

Phylogenetic identification of Haemophilus sp. operational taxonomic unit (OTU). Phylogenetic analysis of the representative sequence of OTU0768 (boldface type) shows there is strong clustering of this bacterium within the Haemophilus genus. Bootstrapping analysis provides a method to judge the strength of confidence for nodes on phylogenetic trees, and a value greater than 95% seen here supports confident assignment of this OTU as Haemophilus influenzae. The tree was rooted with a near neighbor outgroup constructed with sequences from Morganella morganii, Proteus mirabilis, and Providencia stuartii.