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All rights reserved." } ], "http://purl.org/dc/elements/1.1/title" : [ { "@value" : "BEL Framework Large Corpus Document" } ], "http://purl.org/pav/authoredBy" : [ { "@id" : "http://www.tkuhn.ch/bel2nanopub/RA-ZfzQVFXUwWOo5XqyJYS2RZDBRV2_CLeSoHXJAP8AxA#_4" } ], "http://purl.org/pav/version" : [ { "@value" : "20131211" } ] }, { "@id" : "http://www.tkuhn.ch/bel2nanopub/RA-ZfzQVFXUwWOo5XqyJYS2RZDBRV2_CLeSoHXJAP8AxA#_3", "http://www.w3.org/ns/prov#value" : [ { "@value" : "In breast cancers, estrogen receptor (ER) levels are highly correlated with response to endocrine therapies. We sought to define mechanisms of estrogen (E) signaling in a solid breast tumor model using gene expression profiling. ER(+) T47D-Y human breast cancer cells were grown as xenografts in ovariectomized nude mice under four conditions: 1) 17beta-estradiol for 8 wk (E); 2) without E for 8 wk (control); 3) E for 7 wk followed by 1 wk of E withdrawal (Ewd); or 4) E for 8 wk plus tamoxifen for the last week. 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