title: A double-tracer test of the oral absorption of  57 Co- and  58 Co-vitamin B 12  using a whole-body monitor: clinical experience and technical factors.
mesh_terms: D000042:Absorption; D000284:Administration, Oral; D000752:Anemia, Pernicious / Q000175:diagnosis / Q000378:metabolism*; D000818:Animals; D003036:Cobalt Isotopes; D005069:Evaluation Studies as Topic; D005243:Feces / Q000032:analysis; D006801:Humans; D007437:Intrinsic Factor; D008722:Methods; D013552:Swine; D013997:Time Factors; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000378:metabolism* / Q000652:urine; D014915:Whole-Body Counting
chemical_list: D003036:Cobalt Isotopes; D007437:Intrinsic Factor; D014805:Vitamin B 12