. . . . . . . "[This finding suggests that different causal mechanisms operate for these two types of breast cancer and supports the hypothesis that an early first birth protects against breast cancer by reducing the level of ERs in the mammary epithelial cells from which carcinomas develop.]. 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" .