the other , also found in rat brain , predominates in hypothyroid pituitary tissue , is rapidly responsive to changes in thyroid hormone availability , and , as judged by previous , in vivo studies , appears to account for all the t ( 3 ) produced locally in the pituitary and , thereby , 50 % of the intracellular t ( 3 ) in this tissue .
C0020676
hypothyroid
C0041014
t ( 3