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Yeast can make human insulin

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Historically, keeping diabetics alive required grinding up thousands of pig pancreases. Now, we just force fungi to do the heavy lifting. By slipping the human insulin gene into ordinary baker's yeast, these microscopic brewers churn out massive vats of life-saving hormones instead of alcohol. It’s a microscopic sweatshop, but for the greater good.

Yeast can make human insulin
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