in order to study the mechanism , potassium contents and na , k-atpase , of various organs of rats and human thyroid glands were analyzed . the conclusion through these experiments is as follows , 1 as the potassium contents and na , k-atpase activity of thyroid glands are not obviously higher than those of other organs , the 201tl accumulation in thyroid is thought to be not owing to the similarity to the potassium ion , 2 pointing out high activity of na , k-atpase in heart and kidney , the accumulation mechanism of 201tl in these organs has high relation to this activity , 3 though there is a tendency to have higher potassium contents among thyroid tumours , the difference in potassium contents between their histopathology is small ;
C0040132
thyroid
C0040136
thyroid tumours