Phylogenetic tree highlighting the position of Phocaeicola abscessus strain 7401987T relative to bacteria included in the Prevotella, Bacteroides and Paraprevotella genera by comparison of 16S rRNA gene sequences. GenBank accession numbers are indicated in parentheses. Sequences were aligned using CLUSTALX, and phylogenetic inferences obtained using the neighbor joining method within the MEGA 5 software . Numbers at the nodes are percentages of bootstrap values obtained by repeating the analysis 1,000 times to generate a majority consensus tree. Porphyromonas asaccharolytica was used as outgroup. The scale bar represents 0.02 nucleotide change per nucleotide position.