Final answer:
Radioactive iodine treatment for thyroid gland tumors is highly targeted, minimizing side effects on other tissues due to the specificity of iodine uptake by thyroid cells.
Explanation:
Radioactive iodine is used to treat thyroid gland tumors due to the ability of thyroid cells to concentrate iodine. When radioactive iodine (I-131) is administered, it gets effectively localized in the thyroid tissue with minimal impact on other tissues. This precision is because the thyroid gland specifically uptakes iodine, leading to targeted radiation therapy that spares surrounding tissues from excessive exposure.
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