He observed small curved bacteria colonizing the lower part of the stomach in about 50% of patients who had their stomachs biopsied.
In 2005, J. Robin Warren and Barry J. Marshall shared the Nobel Prize in Medicine for discovery of the bacterium Helicobacter pylori, and for establishing experimental proof that it plays a major role in gastritis and peptic ulcer disease. The story began when Warren, a pathologist, noticed that bacilli were associated with the tissues taken from patients suffering from ulcers. Look up the history of this case and describe Warrens first hypothesis.
What sorts of evidence did it take to create a credible theory based on it?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the The Scientific Method concept. If you need more The Scientific Method practice, you can also practice The Scientific Method practice problems.