hypothyroid rats administered triiodothyronine ( 10 migrogram b.i.d . ) for 5 days had a mean tsh response to trh stimulation of 0.051 +/- 0.003 mu/ml , whereas rats to whom saline or 3,3't2 ( 50 microgram b.i.d . ) had been given for the same time interval had mean trh-induced tsh responses of 1.127 +/- 0.179 mu/ml and 1.324 +/- 0.286 mu/ml , respectively .
C0020676
hypothyroid
C0041014
triiodothyronine