Abstract
VERY little is known about the mechanism by which large molecules enter the epithelial cells of the small intestine. Vitamin B12 is one such molecule the absorption of which is dependent on its combination with an even larger molecule, gastric intrinsic factor. This report describes the means by which vitamin B12 is absorbed in infant rats, at a time when intrinsic factor production is poorly developed1.
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GALLAGHER, N. Mechanism and Site of Vitamin B12 Absorption in Suckling Rats. Nature 222, 877–878 (1969). https://doi.org/10.1038/222877a0
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DOI: https://doi.org/10.1038/222877a0
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