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 WordNet Dictionary |
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| | Definition: | |
[n] a substance produced by the mucosa of the stomach and intestines that is essential for the absorption of vitamin B12; "lack of intrinsic factor can result in pernicious anemia" |
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| | See Also: | | factor |
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| Medical Dictionary |
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| | Definition: | | A substance found in the gastric juices that allows vitamin B12 to be absorbed. |
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| Biology Dictionary |
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| | Definition: | | An intrinsic factor is a substance secreted by the parietal cells of the stomach lining for the absorption of vitamin B12 (cyanocobalamin). Pernicious anemia results in the case of an autoantibody against the parietal cells and the intrinsic factor. |
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