Pie chart of percent mean relative abundance of microbial composition as determined by pyrosequencing A) Phylum B) Family level (with percent relative abundance of more than 1%), at First trimester (T1) and at Second trimester (T2) compared between Secretors and Non-secretors.

Pie chart of percent mean relative abundance of microbial composition as determined by pyrosequencing A) Phylum B) Family level (with percent relative abundance of more than 1%), at First trimester (T1) and at Second trimester (T2) compared between Secretors and Non-secretors.