L-thyroxine + AH2 => 3,3',5'-triiodo-L-thyronine + iodide + A + H(+)
l-thyroxine + ah2 => 3,3',5'-triiodo-l-thyronine + iodide + a + h(+)
L-thyroxine + AH2 => 3,3',5'-triiodo-L-thyronine + iodide + A + H(+)
l-thyroxine + ah2 => 3,3',5'-triiodo-l-thyronine + iodide + a + h(+)