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John Rollo treat a patient by dietary restriction.
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Claude Bernard discovered that the liver stored glycogen and secreted a sugary substance into the blood
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Von Mering disproved Bernard’s liver theory when he found that removing the pancreas caused diabetes.
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Fredrick Banting discovered insulin and first test were done on 2 diabetic dogs extracting insulin and inserting it into them.
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!4-year old boy was the first human to receive insulin by Banting and Best.
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First injections failed but purified injections developed by Collip were given.