Abstract
Summary
Day-old cockerels were kept on a corn-cob meal ration while testing homogenates of rat pituitaries for gonadotropic hormones. The chicks failure to grow made the testes weight a more sensitive indicator of gonadotropin when contrasted with the cockerels on a balanced ration. With the corn-cob meal ration the chick assay method was significant with 1/2 of a rat's pituitary.
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