Nobel Prize in Physiology or Medicine 2005
Photo: C. Northcott
Barry J. Marshall
Prize share: 1/2
Photo: U. Montan
J. Robin Warren
Prize share: 1/2
The Nobel Prize in Physiology or Medicine 2005 was awarded jointly to Barry J. Marshall and J. Robin Warren "for their discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease"
Nobel Prizes and laureates
Six prizes were awarded for achievements that have conferred the greatest benefit to humankind. The 14 laureates' work and discoveries range from quantum tunnelling to promoting democratic rights.
See them all presented here.
Explore prizes and laureates
Look for popular awards and laureates in different fields, and discover the history of the Nobel Prize.
