FIG. 7.

Neighbor-joining tree for human oral taxa in the phyla Spirochaetes, Chlamydiae, Chloroflexi, Synergistetes, TM7, and SR1. Labeling and methods used are as described in Fig. 1. The phyla are labeled as follows: encircled “1,” Spirochaetes; encircled “2,” Chlamydiae; encircled “3,” Chloroflexi; encircled “4,” Synergistetes; encircled “5,” TM7; and encircled “6,” SR1.