. . . . . . . . . . . . "[Estradiol (E2) and estrone (E1) levels as well as mRNA expression levels of aromatase, sulfatase and 17beta-hydroxysteroid dehydrogenase type 1 (17beta-HSD1) in breast cancer tissues were studied to elucidate the mechanism involved in the maintenance of the intratumoral high E2 levels in postmenopausal patients with very low serum E2 levels.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2014-02-25"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:40:16+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .