title: A new intestinal tube for studying absorption.
mesh_terms: D002247:Carbon Isotopes; D006801:Humans; D007408:Intestinal Absorption; D007441:Intubation, Gastrointestinal / Q000295:instrumentation*; D007454:Iodides / Q000378:metabolism; D007457:Iodine Radioisotopes; D007930:Leucine / Q000378:metabolism; D010477:Perfusion; D013053:Spectrophotometry
chemical_list: D002247:Carbon Isotopes; D007454:Iodides; D007457:Iodine Radioisotopes; D007930:Leucine