Box and whisker plots representing mRNA expression of Syndecan 3 and Connexin 43 in normal labour (gr. 3) and in prolonged labour (gr. 4). A. Estimation of RT-PCR product size by 1.5% agarose gel electrophoresis. Molecular weight standards contain 10 bands ranging from 100 to 1000 bp. All amplicons had expected size. mRNA expression of (B) Syndecan 3 and (C)Connexin 43. The levels of mRNA expression were normalized to housekeeping gene 28S expression. * – statistically significant differences (p < 0.05) between the group compared to normal labour.