Abstract
Summary
No relationship was observed between survival time and liver pyridine nucleotide concentration of hyperthyroid rats. Pork, which prolongs survival, and nicotinic acid and nicotinamide, which do not prolong survival, partially prevented the fall in liver pyridine nucleotide concentration caused by thyroid-active substances. Methionine and betaine, which prolong survival, did not cause an increase in liver pyridine nucleotide concentration.
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