Figure 2: Bacterial taxa with significant differences in estimated copy number between malodor and control groups. Samples of saliva and tongue coating were analyzed to determine estimated copy numbers of each taxon as a proportion of copy numbers of total bacteria as analyzed by quantitative PCR, and the percentage of each taxon out of total reads analyzed by pyrosequencing. Only the results for tongue coating in which we detected a difference between the malodor and control groups are shown. Data are expressed as mean ± SD.