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Insulin was discovered by:

  • A.Frederick Banting
  • B.Alexander Fleming
  • C.Donald reagan
  • D.Frederick Sanger

Answer: A

Frederick Banting, with Charles Best, discovered insulin at the University of Toronto in 1921.

They extracted it from dog pancreas and showed it controlled blood sugar in diabetic dogs, then in patients. Banting shared the 1923 Nobel Prize and sold the patent for a dollar.

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