Macleod, J J R

Macleod, J(ohn) J(ames) R(ickard)

(born Sept. 6, 1876, Cluny, near Dunkeld, Perth, Scot.—died March 16, 1935, Aberdeen) Scottish physiologist. He taught in U.S., Canadian, and Scottish universities, becoming noted for his work on carbohydrate metabolism. With Frederick Banting and Charles Best he discovered insulin, an achievement for which he and Banting shared a Nobel Prize in 1923.