进入靶细胞发挥作用的甲状腺素是( )

A、结合型T[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]和T[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]
B、游离型T[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]和T[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]
C、T[img=~\/QImg\/2013-06-26-17-11-54\/image003.gif]
D、T[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]
E、T[img=~\/QImg\/2013-06-26-17-11-54\/image021.gif]和T[img=~\/QImg\/2013-06-26-17-11-54\/image022.gif]