Maternal whole blood expression changes with gestational age and labor in normal pregnancy [array]

Maternal plasama colected longitudinally were profiled using Affymetrix Human Transcriptome Arrays to evaluate changes with gestational age and with labor in normal pregnancy. The study included normal pregnancies with (n=8) and without (n=8) spontaneous labor at term. Half of the women in each group had 3 longitudinal samples taken from 12.1-40.3 weeks of gestation, while the other half of women had only one sample taken at term before delivery, for a total of 32 samples.