Comparison of phylotypes found at various pocket probing depths (PPDs). Sample identifications as in Table 1 and PPDs are listed at the base of each bar. For PPD: 1 = 1 to 3 mm, 3 = 3 to 5 mm 5 = > 5 mm. Results show at the phylum and genus levels. DNA samples obtained from various PPDs were sequenced and analyzed separately. The total height of the bar represents 100% of the assigned sequences after quality filtering, and the size of the colored regions represents proportional contributions of each phylotype shown. For clarity, only major genera (>3%) are listed in the color key.