title: Radioactive vitamin B 12 absorption studies: population distribution of plasma B 12 absorption and serum B 12.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D000752:Anemia, Pernicious / Q000175:diagnosis; D001681:Biological Assay; D003036:Cobalt Isotopes; D005056:Euglena gracilis / Q000032:analysis; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D007437:Intrinsic Factor / Q000494:pharmacology; D008286:Malabsorption Syndromes / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000032:analysis / Q000097:blood* / Q000378:metabolism
chemical_list: D003036:Cobalt Isotopes; D007437:Intrinsic Factor; D014805:Vitamin B 12