3-iodo-L-thyronine + iodide + A + H(+) = 3,3'-diiodo-L-thyronine + AH2
3-iodo-l-thyronine + iodide + a + h(+) = 3,3'-diiodo-l-thyronine + ah2
3-iodo-L-thyronine + iodide + A + H(+) = 3,3'-diiodo-L-thyronine + AH2
3-iodo-l-thyronine + iodide + a + h(+) = 3,3'-diiodo-l-thyronine + ah2