intrinsic-factor

intrinsic factor

noun Biochemistry.
a glycoprotein, secreted by the gastric mucosa, that is involved in the intestinal absorption of vitamin B 12 .

Origin:
1925–30

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World English Dictionary
intrinsic factor
 
n
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 10th Edition
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American Heritage
Medical Dictionary

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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