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Relative abundance (%) of the genera Bifidobacterium, Lactobacillus, and Streptococcus respectively, for all time points (three days [3d], three months [3 m], six months [6 m], and nine months [9 m]) and for both; mothers treated with placebo (red) or probiotics (blue) during pregnancy. There were no significant differences between the groups at any of the specific time points.
