Real-time PCR results for expression of PR-AB (upper), PR-AB/PR-B (upper middle), PR-B (lower middle) and AR (bottom) mRNAs in human cervix from the C (n = 11), R (n = 10) and NR (n = 4) groups respectively. The values of relative expression of target genes were normalized against cyclophilin A and displayed in arbitrary units. The ratio of PR-AB/PR-B represents the PR-A expression. The "box-and-whisker plot" represents the median value with 50% of all data falling within the box. The whiskers extend to the 5th and 95th percentiles. Boxes with different letter designations are significantly different, p < 0.05.