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Helicobacter pylori is a gram-negative, microaerophilic rod-shaped bacteria that lives beneath the gastric mucous layer, on the surface of epithelial cells. Stomach infection with this organism causes inflammation of the gastric mucosa, which can lead to gastritis, duodenal or gastric ulcer and even in rare cases to gastric carcinoma or MALT lymphoma. Approximately 50% of the world's population is...
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