Figure 2. Box plots of the concentrations of RNA transcripts in the placentas as determined by RT-qPCR.

Seven transcripts (A–F) with different fold-change values on the microarray dataset were selected for further investigation by RT-qPCR in the placentas collected from SPB, STB and TCS. The line inside each box denotes the median. Limits of the box denote the 25^th and 75^th percentiles. Whiskers denote the 10^th and 90^th percentiles. Filled circles denote the 5^th and 95^th percentiles. Asterisks denote the any pairwise comparisons that are significantly different (p<0.05, the Student-Newman-Keuls test). SPB, spontaneous preterm birth. STB, spontaneous term birth. TCS, elective term cesarean delivery.