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Mac·leod(mə-kloud′), John James Rickard 1876-1935.
British physiologist. He shared a 1923 Nobel Prize for the purification of insulin and its application to the treatment of diabetes.
(Biography) John James Rickard. 1876–1935, Scottish physiologist: shared the Nobel prize for physiology or medicine (1923) with Banting for their part in discovering insulin
John James Rick•ard (ˈrɪk ərd) 1876–1935, Scottish physiologist: a discoverer of insulin.