The 16S rRNA gene pyrosequencing detected 77 genera (Table 2). In addition, 17.5% of the pyrosequencing reads were assigned by RDPII as unclassified taxa. HOMIM detected 49 genera, including 37 detected by both methods. As shown in Table 2 (and Table S2), .98% of classifiable bacteria in the subject samples were assigned in these 37 genera by both methods. Although 16S rRNA sequencing detected an additional 40