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Compositions of fecal microbiota in 23 healthy adults at the phylum level. The subjects were divided into five groups and received either a placebo, a capsule containing 9 × 109 CFUs of one of the three strains, or a capsule containing 9 × 109 CFUs of a mixture of B. breve CNCM I-4035 and L. rhamnosus CNCM I-4036 each day for 30 days. Each column represents 1 healthy adult, as described in Table 1.
