Evidence for the absorption of immunoreactive intrinsic factor into the intestinal epithelial cell during vitamin B 12  absorption.
D000818:Animals; D001665:Binding Sites; D003036:Cobalt Isotopes; D005750:Gastric Juice / Q000378:metabolism; D006168:Guinea Pigs; D007082:Ileum / Q000378:metabolism*; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism; D007437:Intrinsic Factor / Q000378:metabolism*; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D008928:Mitochondria / Q000378:metabolism; D011485:Protein Binding; D011863:Radioimmunoassay; D014805:Vitamin B 12 / Q000378:metabolism*
D003036:Cobalt Isotopes; D046911:Macromolecular Substances; D007437:Intrinsic Factor; D014805:Vitamin B 12