Fig. 4

Differences in salivary and subgingival microbial community structure and function between full-term delivery, pre-term delivery, and pre-term delivery complicated by pre-eclampsia. Linear discriminant analysis (LDA) of CLR-transformed salivary functional genes is shown in A, subgingival genes in B, salivary microbial taxa in C, and subgingival microbial taxa in D. The microbial profiles of subjects clustered by delivery type creating three statistically significant clusters (p = 0.001, MANOVA/Wilks)