"Organification defect" specifically refers to the inability of the thyroid to covalently bind iodide to tyrosines residues in the colloid. This reaction is performed by:

A. thyroid peroxidase
B. sodium-iodide transporter
C. TSH receptor
D. iodotyrosine deiodinases
E. thyroglobulin


ANS: A

Anatomy & Physiology

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