Lactose intolerance in the adolescent.
D000005:Abdomen; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004032:Diet; D006801:Humans; D007785:Lactose / Q000378:metabolism; D007787:Lactose Intolerance / Q000175:diagnosis* / Q000378:metabolism / Q000628:therapy; D010146:Pain / Q000209:etiology; D001616:beta-Galactosidase / Q000378:metabolism
D001616:beta-Galactosidase; D007785:Lactose