Fig. 2

All genera with p values below 0.01 among all 2001 genera and their \(-\log _{10}p\) are shown. The black vertical line indicates the significance level \(p=0.005\). The genera shown in red represent the genera that remain as representative bacteria after the unification of similar bacteria within the cluster in Step 2, and are selected as core bacteria after being tested as significantly increasing ones in Step 3. The genera shown in gray represent the genera that are significantly increased in the comparison of two groups but do not correlate with other genera or are not representative bacteria