*'''Development''' - Thyroid hormones are vital during the fetal period and the first few months after birth. T3 and T4 are the hormones for metamorphosis in frogs.
*'''Development''' - Thyroid hormones are vital during the fetal period and the first few months after birth. T3 and T4 are the hormones for metamorphosis in frogs.
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*'''Growth''' - promotes bone growth
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*'''Growth''' - enhances amino acid uptake by tissues and enzymatic systems involved in protein syntheis, promotes bone growth