Assertion: estrogen's effect | /r/HasProperty | led to its rediscovery
Facets:
value: in 1997
type: TEMPORAL
Source sentences:
text: Raloxifene originally failed as a breast cancer drug due to its poor performance in comparison to tamoxifen in the laboratory but the estrogenic effects of raloxifene on bone led to its rediscovery and approval in 1997.