John James Rickard Macleod

Also found in: Dictionary, Thesaurus, Wikipedia.

Macleod, John James Rickard


Born Sept. 6, 1876, in Cluny, Perth, Scotland; died Mar. 16, 1935, in Aberdeen. British physiologist.

Macleod studied at Marischal College in Aberdeen and the University of Leipzig. From 1903 to 1918 he worked in the USA; from 1918 he was professor of physiology at the University of Toronto (Canada). He studied the functions of the respiratory center of the brain, experimental glycosuria, the formation of lactic acid, and the sugar content in the blood. Together with F. G. Banting and C. H. Best, Macleod discovered insulin while studying diabetes. He was awarded the Nobel Prize in 1923, jointly with F. G. Banting.