| Nomination for Nobel Prize in Physiology or Medicine | |
| Year: | 1924 |
| Number: | 1 - 0 |
| Motivation: | John J.R. Macleod, prof physiology, Toronto, ON, CA, was nominated for the isolation and preparation of the active principle of the Islands of Langerhans (insulin). Nominator was Todd I. Wingate, prof anatomy, Cleveland, OH, US. Nomination was declared invalid by the Nobel Committee. |