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Principal component analysis (PCA) of bacterial genera with a median abundance >0.1% (16S rRNA gene amplicon sequencing) of infants’ T0 (meconium) and T2 (six months of age). Infants were grouped based on the relative metadata: (A) maternal pre-pregnancy BMI (NW, normal BMI, or OW, mothers with overweight/obesity), (B) maternal gestational weight gain (NWG, normal WG, or EWG, excessive WG), and (C) type of delivery (VD, vaginally delivered, or CS, by caesarean section).
