Fig. 3.

OTU-based community structure and composition in the gut microbiota. (A) Each vertical lane corresponds to a sample day, and the gray-scale shaded rectangles represent the abundance of the different OTUs. The dendogram on the left shows how the OTUs are clustered according to cooccurrence, and branches are colored to indicate the taxonomical assignment of the OTUs at the phylum level. Samples selected for metagenomic analyses are indicated with asterixes. (B) Relative abundances of the bacterial phyla in each samples. (C) Significant events pertaining to changes in the infant's diet are indicated. Steps characterized by specific bacterial consortia supported by linear discriminate analysis are shown.