Abstract
By using 57CoB12 an intestinal absorption of vitamin B12 and vitamin B12-binding power of the gastric mucosa of rats with vitamin B2 deficiency were investigated. The results revealed that a decrease in vitamin B12 in the liver and serum of rats with vitamin B2 deficiency was a result from a defective intestinal absorption of vitamin B12, and that this malabsorption may be due to a decrease in ‘intrinsic factor’ caused by vitamin B2 deficiency.
