title: [Primary lactose intolerance in adults and its etiology].
mesh_terms: D000328:Adult; D044466:Asian People; D044383:Black People; D006801:Humans; D007421:Intestine, Small / Q000378:metabolism; D007564:Japan; D007785:Lactose / Q000378:metabolism; D007787:Lactose Intolerance / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000378:metabolism / Q000628:therapy; D044465:White People
chemical_list: D007785:Lactose