title: New antiestrogen shows promise in ER-positive breast cancers.
mesh_terms: D000970:Antineoplastic Agents / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000378:metabolism; D004958:Estradiol / Q000031:analogs & derivatives* / Q000627:therapeutic use; D004965:Estrogen Antagonists / Q000627:therapeutic use*; D005260:Female; D000077267:Fulvestrant; D006801:Humans; D011960:Receptors, Estrogen / Q000037:antagonists & inhibitors / Q000378:metabolism; D013629:Tamoxifen / Q000627:therapeutic use
chemical_list: D000970:Antineoplastic Agents; D004965:Estrogen Antagonists; D011960:Receptors, Estrogen; D013629:Tamoxifen; D000077267:Fulvestrant; D004958:Estradiol