Definition of Intrinsic factor
1. Noun. 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"
Medical Definition of Intrinsic factor
1. A mucoprotein normally secreted by the epithelium of the stomach and that binds vitamin B12, the intrinsic factor/B12 complex is selectively absorbed by the distal ileum, though only the vitamin is taken into the cell. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
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Lexicographical Neighbors of Intrinsic Factor
Literary usage of Intrinsic factor
Below you will find example usage of this term as found in modern and/or classical literature:
1. Code of Federal Regulations, Title 21, Food and Drugs, PT. 200-299, Revised by Food and Drug Administration (FDA) Staff (2005)
"(3) The substitution of a possibly inadequate treatment, such as the inges- tion of oral preparations of vitamin Bi2 with intrinsic factor concentrate, ..."
2. Advertising, Selling the Consumer by John Lee Mahin (1914)
"... based on cost of production to make price a determining intrinsic factor unless the thought of equal quality Values . . , .., .. is associated with it. ..."
3. Caruso's Method of Voice Production: The Scientific Culture of the Voice by Pasqual Mario Marafioti (1922)
"In fact, a deformed and disagreeable speaking voice can never develop into a correct and pleasing singing voice, because, being its intrinsic factor it ..."
4. Annual Report by Indiana State Board of Health (1892)
"We'will find by the study of the different effects that we will be speedily convinced that, besides those primary or intrinsic factor?, there are many ..."
5. Collected Papers by the Staff of Saint Mary's Hospital, Mayo Clinic by Saint Marys Hospital (Rochester, Minn.) (1917)
"To these may be added an intrinsic factor, the nutritional condition of the animal. I attempted to control these factors, but found that in the ..."