
Gestational age trends for abundances of gene families in saliva samples for each subject. Gestational age was used to constrain the redundancy analysis of variance-stabilized gene family abundances within individuals. Gestational age effect is observed along the x-axis (RDA1 axis), and points within plots were connected based on the resulting ordination scores. P-values were calculated with ANOVA on the RDA ordination constraint using the anova.cca function of the vegan package in R.











