Cachet depicts Frederick Banting and Charles Best with a description of how they isolated and refined insulin as an independent hormone.
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|Original file type||TIFF|
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Ray Webber. “First Day Cover Commemorating the 50th Anniversary of the Discovery of Insulin.” Canada, 1971. Witco Stamp Collection, Box 3. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/8s45q888c.
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