On March seventh day) (��î years, April 15, 1891, the Canadian doctor Banting discovered insulin.

Banting, born November 14, 1891. 1921 with Best discovered insulin, after McLeod cooperation, hormone treatment of diabetic effect. April 15, 1923, Banting and Macleod won the Nobel in Physiology or Medicine prize co-discovered insulin. His part of the prize to the Best. "World War II" in a plane crash, died on February 21, 1941.