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Mexican Yam
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In the 1930s, scientists trying to synthesize estrogen and progesterone for therapeutic uses - and possibly to create a new kind of contraceptive - faced an obstacle: they needed an abundant, cheap source of the hormones for mass production. Chemist Russell Marker discovered a way to extract progesterone from plants, and began searching for one that could yield enough of the hormone. After searching for a decade, he found it: the wild Mexican yam. (Podcast: The Plant Detective , 8/30/14)
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