to test the hypothesis that in subjects with low intestinal lactase activity ( lla ) lactose solutions leaves the stomach at an abnormally fast rate , we have measured the gastric emptying rate of solutions of lactose and glucose-galactose in patients with lla ( n = 9 ) and in control subjects with high intestinal lactase levels ( n = 7 ) as proved by the assay of disaccharidases in specimens of intestinal mucosa .
C0021853
intestinal
C0021839
of