jejunal biopsies were obtained from 37 children with cystic fibrosis , 16 with gluten-induced enteropathy , and 18 control subjects for the following studies : ( 1 ) disaccharidase activity , ( 2 ) l-ala-l-phe hydrolase activity , and ( 3 ) intestinal uptake of three 14c-labeled amino acids .
C0007570
gluten-induced enteropathy
C0021853
intestinal