Lactose Intolerancebeta-GalactosidaseLactose Tolerance TestLactaseLactoseFlatulenceGalactosidasesDairy ProductsBreath TestsLactase-Phlorizin HydrolaseHydrogenMilkalpha-GalactosidaseKwashiorkorAbdominal PainMalabsorption SyndromesComplement C3cCalcium, DietaryNational Institute of Mental Health (U.S.)Glucose IntoleranceCerebrosidesGalactoseAcridine Orangealpha-L-FucosidaseFabry DiseaseDiarrheaIrritable Bowel SyndromeIntestine, SmallFructose IntoleranceGlycosidesNigericinGlycoside HydrolasesCell AgingOrthostatic IntoleranceLactose SynthaseFeces