Bacterial stomach infection. Endoscopic view of the stomach wall, showing the mucosal layer (gastric mucosa) infected by Helicobacter pylori. The char


Bacterial stomach infection. Endoscopic view of the stomach wall, showing the mucosal layer (gastric mucosa) infected by Helicobacter pylori. The characteristic ridges (gastric folds or plicae gastricae) of the mucosal layer can also be seen. H. pylori is a gram-negative bacterium that can be found in parts of the stomach and duodenum. It causes chronic low-level inflammation of the stomach lining, and is strongly linked to the development of duodenal and gastric ulcers, and stomach cancer.


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