Vitamin B 12 Content of Various Organs and Tissues of the Rat. ∗

Abstract

Summary

The kidney, liver, heart, small intestine and femoral muscles of rats raised on a corn-soybean diet were assayed for vitamin B₁₂ content.

The kidney was found to be the site of greatest B₁₂ concentration. The liver, heart, small intestine, and muscle contained no appreciable amount of the vitamin after the animals had been kept on the basal ration for 6 weeks. The amount of B₁₂ increased in the organs and tissues when vitamin B₁₂ was added to the diet.