translating proportions of microorganisms in samples from subjects in the longitudinal treatment study to equivalent percentile ranks within the large cross-sectional data base demonstrated that at probing depths greater than or equal to 4.5 mm cocci moved from below the 50th percentile in our estimate of the naturally occurring distribution of subgingival microorganisms to above , and spirochetes , total motile organisms and fusobacterium spp . moved from above the 50th percentile to below .
C0445623
microorganisms
C0029235
organisms