RDA plots for pyrosequencing based microbiota analysis: Family level (A&B) microbial composition was significantly different at third trimester when compared A) Secretors (blue circles) vs Non Secretors (red circles) (p = 0.04); B) and genotypes (AA = red, GA = green, GG = blue) (p = 0.01).

Phyla level (C&D) difference was found to be different at first trimester when C) Secretor status D) Genotypes are compared (p = 0.005). Triangles indicate centroids of study groups.