FIG. 2.

Dendrogram depicting the degree of difference between 16S rRNA gene sequences. The dendrogram was generated by the neighbor-joining pair group method (12). The sequences of L. buccalis and “L. sanguinegens” are from GenBank (accession no. L37788 and L37789, respectively) (5). The sequences of the Fusobacterium spp. are part of the MicroSeq database. These are genomic sequences of the American Type Culture Collection type strain for each species (ATCC 25563, ATCC 25286, ATCC 2557, and ATCC 8501).