RETURN TO ISSUEPREVNewsNEXTHormone may curb premature birthsCite this: Chem. Eng. News 1975, 53, 41, 4–5Publication Date (Print):October 13, 1975Publication History Published online7 November 2010Published inissue 13 October 1975https://doi.org/10.1021/cen-v053n041.p004aCopyright © 1975 American Chemical SocietyArticle Views4Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (249 KB) SUBJECTS:Pharmaceuticals Get e-Alerts