Meaning of INTRINSIC FACTOR

WordNet Dictionary
	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
Medical Dictionary
	Definition:		A substance found in the gastric juices that allows vitamin B12 to be absorbed.
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Biology Dictionary
	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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