Effects of Vitamin B 12 and Liver Residue on Growth of Hyperthyroid Male Rats ∗

Abstract

Summary

Immature male rats were fed massive doses of thyroid in conjunction with a purified ration containing casein as the dietary protein. A marked retardation occurred both in body and gonadal weight. These effects were compldy counteracted by the administration of liver residue. Crystalline vitamin B₁₂, however, was without significant effect