He discovered the bacterium Helicobacter pylori and how it causes gastritis and peptic ulcer disease world wide. His discovery illuminated the patterns of helicobacter infection in different populations around the world. In the more developed countries ,which has more pure and clean water, the rate of getting gastritis and peptic ulcer is declining. However, in the less developed countries, the problem still largely persists .Thanks to Marshall’s hard work, Helicobacter pylori is now recognised as a important factor of the stomach cancer. His discoveries freed millions of people worldwide from the suffering of gastritis and peptic ulcer disease!
Special acknowledgement to1)Wikipedia(http://en.wikipedia.org/wiki/Barry_Marshall)
2)Academy of Achievement(http://www.achievement.org/autodoc/page/mar1bio-1)
3)Academy of achievement(http://www.achievement.org/achievers/mar1/photos/mar1-002a.gif)
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