Changes

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==Introduction==

==Introduction==

*Iodine is naturally concentrated in the thyroid gland, whether radioactive or not, and incorporated into thyroxine

*Iodine is naturally concentrated in the thyroid gland, whether radioactive or not, and incorporated into thyroxine

Consequently, ELISA has largely overtaken RIA as a preferred diagnostic tool

Consequently, ELISA has largely overtaken RIA as a preferred diagnostic tool