HYAL 1-2 mRNA expression in human endometrium and its lesions. Relative mRNA levels of A) HYAL1 and B) HYAL2 in different tissues. The boxes show the ranges between 25th and 75th percentiles, with a horizontal line at the median value. The whiskers extend to the 10th and 90th percentiles. NE = normal pre-menopausal endometrium, PME = post-menopausal proliferative endometrium, CAH = complex atypical hyperplasia, G1 = grade 1 endometrioid endometrial adenocarcinoma, G2 + 3 = grade 2 + 3 endometrioid endometrial adenocarcinoma.