Definition: A spiral-shaped bacterium found in the stomach. H. pylori damages stomach and duodenal tissue, causing ulcers. Previously called Campylobacter pylori.
Pronunciation: HELL-uh-koh-BAK-tur py-LOH-ree
Helicobacter pylori (H. pylori)
By Sharon Gillson, About.com
Updated September 11, 2007
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
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