الفهرس 
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Literature reviewOnly 14 pages are availabe for public view
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Abstract
Thyroid gland is a small bilobed endocrine gland with
weight 20 25g in white rats overlays the trachea just below
the larynx (Choksi et al. 2003 Fox et al. 2008). Thyroid
gland secretes two hormones that are secreted into the
blood and then carried to different tissues in the body.
Thyroid hormones are iodine containing amine hormones
(T4 or thyroxine) and (T3 or triiodothyronine) (Diekman et
al. 2000). These hormones play a role in the
cardiovascular nervous, immune and reproductive system
development and function (Krassas, 2000 Choksi et al.,
2003).