. . . . . . . "[In previous studies using a xenograft model with tumors of human estrogen receptor (ER)-positive breast cancer cells transfected with aromatase (MCF-7Ca), we explored the antitumor efficacy of treatment combining the nonsteroidal aromatase inhibitor letrozole with tamoxifen.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2017-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:12:30+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .