1921 Insulin

The book of science

Tom Sharp

Frederick Banting, Charles Herbert Best medicine


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The classic symptom of diabetes, known for many centuries, was sugar in the urine. Insulin causes cells in the body to take up glucose from the blood. Banting was right; an enzyme of the pancreas destroys insulin. Working with John Macleod, Banting and Best developed a pure form of insulin that they first called isletin.

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