[Diagnosis of lactase deficiency by exhaled air counting method using C14-lactose].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002241:Carbohydrates; D002245:Carbon Dioxide / Q000032:analysis; D002247:Carbon Isotopes; D005260:Female; D006801:Humans; D007785:Lactose / Q000008:administration & dosage; D007787:Lactose Intolerance / Q000175:diagnosis*; D008297:Male; D008722:Methods; D008875:Middle Aged; D012119:Respiration
D002241:Carbohydrates; D002247:Carbon Isotopes; D002245:Carbon Dioxide; D007785:Lactose