Recent winners of the Nobel Medicine Prize
2020: Americans Harvey Alter and Charles Rice, together with Briton Michael Houghton, for the discovery of the Hepatitis C virus, leading to the development of sensitive blood tests and antiviral drugs.
2019: William Kaelin and Gregg Semenza of the US and Britain's Peter Ratcliffe for establishing the basis of our understanding of how cells react and adapt to different oxygen levels.
2018: Immunologists James Allison of the US and Tasuku Honjo of Japan, for figuring out how to release the immune system's brakes to allow it to attack cancer cells more efficiently.
2017: US geneticists Jeffrey Hall, Michael Rosbash and Michael Young for their discoveries on the internal biological clock that governs the wake-sleep cycles of most living things.
2016: Yoshinori Ohsumi (Japan) for his work on autophagy -- a process whereby cells "eat themselves" -- which when disrupted can cause Parkinson's and diabetes.
2015: William Campbell (US citizen born in Ireland) and Satoshi Omura (Japan), Tu Youyou (China) for unlocking treatments for malaria and roundworm.
2014: John O'Keefe (Britain, US), Edvard I. Moser and May-Britt Moser (Norway) for discovering how the brain navigates with an "inner GPS".
2013: Thomas C. Suedhof (US citizen born in Germany), James E. Rothman and Randy W. Schekman (US) for work on how the cell organises its transport system.
2012: Shinya Yamanaka (Japan) and John B. Gurdon (Britain) for discoveries showing how adult cells can be transformed back into stem cells.
2011: Bruce Beutler (US), Jules Hoffmann (French citizen born in Luxembourg) and Ralph Steinman (Canada) for work on the body's immune system.