Partial least-squares analysis (PLS) of microbiota associated with having caries or not at 3 years of age (A) Scatter-loading plot illustrating clustering of children having caries or being caries-free.

(B) Column loading plot illustrating taxa associated with having caries or not (caries-free). The PLS model employed caries and caries-free allocations as y, and pyrosequencing and HOMIM taxa as the x-block.