Examlex
The most severe mass extinction occurred at the end of the Permian period.
Peptic
Pertaining to digestion; can also refer to an ulcer of the upper digestive tract.
Gastric Ulcer
A sore or lesion that develops on the lining of the stomach, often resulting from infection with H. pylori bacteria or prolonged use of NSAIDs.
Stomach Ulcer
A sore that develops on the lining of the stomach or the small intestine, often caused by infection with H. pylori bacteria or prolonged use of NSAIDs.
Duodenum
The first segment of the small intestine.
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