title: Intestinal absorption of some heterocyclic and aromatic amino acids from the ageing gut.
mesh_terms: D000375:Aging; D000818:Animals; D001692:Biological Transport; D002250:Carbon Radioisotopes; D005260:Female; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000033:anatomy & histology / Q000378:metabolism*; D007700:Kinetics; D008099:Liver / Q000378:metabolism; D009929:Organ Size; D010649:Phenylalanine / Q000378:metabolism*; D011392:Proline / Q000378:metabolism*; D051381:Rats; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D002250:Carbon Radioisotopes; D010649:Phenylalanine; D014364:Tryptophan; D011392:Proline