Malabsorption of crystalline vitamin B 12 in cystic fibrosis.

Adolescent Adult Bicarbonates/pharmacology Child Cobalt Isotopes Crystallization Cystic Fibrosis/complications,metabolism,physiopathology Fats/analysis Feces/analysis Humans Intestinal Absorption Isotope Labeling Pancreas/physiopathology Pancreatic Extracts/administration & dosage Vitamin B 12/administration & dosage,blood,metabolism,urine Vitamin B 12 Deficiency/etiology

Bicarbonates Cobalt Isotopes Fats Pancreatic Extracts Vitamin B 12