Search Displaying 1 - 1 of 1 Fulltext search Sort by RelevanceDate Created: Newest to OldestDate Created: Oldest to Newest Edgar Allen (1892–1943) By: Brendan Van Iten | Published: Jul 23, 2017 Edgar Allen identified and outlined the role of female sex hormones and discovered estrogen in the early 1900s in the US. In 1923, Allen, through his… EstrogenHormones, SexOogenesisEstrusMenstrual Cycle Filter my results Author (-) Brendan Van Iten (1) CollectionArticles (1)