Koh et al. performed a longitudinal study on pregnant women that analyzed their combined cell-free RNA transcriptomes across all three trimesters of pregnancy and after delivery. Plasma samples were collected from four non-pregnant subjects (2 men and 2 women), as well as from 11 pregnant women who contributed samples at the first, second, and third trimesters and postpartum.

Tissue Condition Samples
Test blood plasma second trimester pregnancy 11
Control blood plasma non-pregnant control 4
Gene Fold Change (log2) Significance Genus Species