in apparently normal thyroid tissue , obtained from fetuses , young ( 20-45 ) , and elderly ( greater than 60 ) euthyroid people with thyroid cancer or hyperparathyroidism , the number of interfollicular adrenergic nerve terminals appeared to be reduced with increasing age , and the thyroid tissue concentration of na was significantly lower in elderly than in young people .
C0007115
thyroid cancer
C0040132
thyroid