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Dietary intake is modest estimated at 100-150 mg/day from fruits, vegetables, and meats and much of this is broken down by digestive enzymes (gamma-glutamyltranspeptidase and dipeptidases) in the intestinal lumen before absorption [1][2]
The samples were immediately frozen in liquid nitrogen and stored at 80C until further analyses
Here the Intrinsic Factor binds to the B12 and the "B12/IF Complex" enters the cells on the wall of the Ileum after binding to receptors on the surface of the Ileal cells, allowing it to enter the blood stream
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