title: Congenital and adult intestinal lactase deficiency.
mesh_terms: D000328:Adult; D000367:Age Factors; D005696:Galactosidases / Q000032:analysis / Q000172:deficiency*; D006801:Humans; D007231:Infant, Newborn; D007413:Intestinal Mucosa / Q000201:enzymology*; D007421:Intestine, Small; D007787:Lactose Intolerance / Q000235:genetics
chemical_list: D005696:Galactosidases