title: Intestinal lactase: what defines the decline?
authors.forename: G M
authors.initials: GM
authors.lastname: Gray
mesh_terms: D000375:Aging / Q000378:metabolism*; D006801:Humans; D007422:Intestines / Q000201:enzymology* / Q000648:ultrastructure; D008871:Microvilli / Q000201:enzymology / Q000648:ultrastructure; D001616:beta-Galactosidase / Q000032:analysis* / Q000378:metabolism / Q000502:physiology
chemical_list: D001616:beta-Galactosidase