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A substance which is secreted by the stomach wall and converted into the enzyme pepsin by gastric acid.
- ‘The sensitivity of the assay is not great enough to detect the small quantity of pepsinogen known to be present in blood (presumably after direct absorption from gastric mucosal cells).’
- ‘Examples of important proenzymes include pepsinogen, trypsinogen and chymotrypsinogen, which give rise to the proteolytic digestive enzymes.’
- ‘In the stomach, pepsinogen is secreted, and activated into pepsin by the acid that is secreted at the same site.’
- ‘Ginger is an excellent natural antacid because it prevents the breakdown of pepsinogen to pepsin: the latter irritates tissue to cause peptic ulcers.’
- ‘This process is autocatalytic for some pro-enzymes such as pepsinogen [23-25] and cathepsins D and E.’
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