intrinsic factor(redirected from William B Castle)
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A glycoprotein that is secreted by the gastric mucous membrane and is essential for the absorption of vitamin B12 in the intestines.
(Biochemistry) biochem a glycoprotein, secreted by the stomach, the presence of which is necessary for the absorption of cyanocobalamin (vitamin B12) in the intestine
a gastric glycoprotein involved in the absorption of vitamin B12.
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|Noun||1.||intrinsic factor - 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"|
factor - anything that contributes causally to a result; "a number of factors determined the outcome"
n. factor intrínseco, proteína normalmente presente en el jugo gástrico humano.