 
                            
                    The Long-Lasting Effects of Maternal Thyroid Dysfunction
        Until it starts producing on its own, the fetus is largely dependent on the mother for the supply of several substances, including thyroid hormones. The thyroid hormones include TSH (thyroid stimulating hormone), T3, and T4/FT4. (FT4 is free T4, which is not bound to protein). TSH is produced in the    
    
        
     
             
                             
                             
                             
                             
                             
                             
                             
                            
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