Distribution of Vitamin B 12 in the Organs and Tissues of the Chick. †

Summary

Microbiological data have been presented on the distribution of vit. B₁₂ in the tissues and organs of chicks fed a purified diet containing a high level of vit. B₁₂. Kidney was found to contain the most vit. B₁₂ while liver and pancreas contain lesser quantities. Muscle, except for the heart, is low in vit. B₁₂ under these conditions. A comparison of these results with other published data indicates that certain organs, particularly the kidney, liver and pancreas, have the ability to store appreciable quantities of vit. B₁₂.