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intrinsic factor

noun, Biochemistry
a glycoprotein, secreted by the gastric mucosa, that is involved in the intestinal absorption of vitamin B 12 .
Origin of intrinsic factor
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for intrinsic factor

intrinsic factor

(biochem) a glycoprotein, secreted by the stomach, the presence of which is necessary for the absorption of cyanocobalamin (vitamin B12) in the intestine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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intrinsic factor in Medicine

intrinsic factor n.
A relatively small mucoprotein secreted by the parietal cells of gastric glands and required for adequate absorption of vitamin B12 for production of red blood cells. Also called Castle's intrinsic factor.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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