The Nobel Prize in Physiology or Medicine 2019

William Kaelin official Nobel portrait

© Nobel Media. Photo: A. Mahmoud

Prize share: 1/3

Sir Peter J. Ratcliffe

© Nobel Media. Photo: A. Mahmoud

Prize share: 1/3

Gregg L. Semenza

© Nobel Media. Photo: A. Mahmoud

Prize share: 1/3

The Nobel Prize in Physiology or Medicine 2019 was awarded jointly to William G. Kaelin Jr, Sir Peter J. Ratcliffe and Gregg L. Semenza "for their discoveries of how cells sense and adapt to oxygen availability."

To cite this section
MLA style: The Nobel Prize in Physiology or Medicine 2019. NobelPrize.org. Nobel Media AB 2021. Wed. 16 Jun 2021. <https://www.nobelprize.org/prizes/medicine/2019/summary/>

Back to top Back To Top Takes users back to the top of the page

Learn more

Nobel Prizes 2020

Twelve laureates were awarded a Nobel Prize in 2020, for achievements that have conferred the greatest benefit to humankind.

Their work and discoveries range from the formation of black holes and genetic scissors to efforts to combat hunger and develop new auction formats.

See them all presented here.
Nobel Prizes 2020 graphics

Explore prizes and laureates

Look for popular awards and laureates in different fields, and discover the history of the Nobel Prize.