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Thyroid Stimulating Hormone (TSH) is a glycoprotein hormone secreted by
the pituitary gland and regulates the synthesis/ release of T3 and T4 by
thyroid gland. TSH has two subunits, namely alpha and beta. The alpha
subunit is similar to the alpha subunit found in LH, FSH and hCG
glycoprotein hormones. However, the beta subunit is specific and differs
from hormone to hormone.
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