Definitions for "Intrinsic factor"
a substance elaborated by the stomach and found in the gastric juices that binds to vitamin B12 and facilitates its absorption by the intestines.
A protein normally secreted by the epithelium (lining) of the stomach that binds vitamin B12, the intrinsic factor/B12 complex is selectively absorbed by the distal ileum (large intestine), though only the vitamin is taken into the cell.
glycoprotein secreted from the lining of the stomach involved in the absorption of vitamin B12.