title: Studies of gastrointestinal interactions. I. A mathematical analysis of jejunal indicator concentrations used to calculate jejunal flow and mean transit time.
mesh_terms: D003036:Cobalt Isotopes; D005769:Gastrointestinal Motility; D006801:Humans; D007583:Jejunum / Q000502:physiology*; D008433:Mathematics; D008954:Models, Biological; D013997:Time Factors; D014805:Vitamin B 12
chemical_list: D003036:Cobalt Isotopes; D014805:Vitamin B 12