FIG. 8.

Phylogenetic tree of bifidobacterial sequences based on E. coli positions 164 to 694. The alignment and phylogenetic analysis were performed with the ARB software (29), and the tree was constructed using the neighbor-joining method (41) based on alignment positions conserved in at least 50% of the sequences analyzed. Bar = 10% diversity. The GenBank accession numbers of reference sequences are indicated. Letters in designations: A, adult A; C, adult C; T, total fecal cells; L, sorted live fraction; I, sorted injured cells; D, sorted dead cells.