- " The
hypothalamopituitary-thyroid axis. The negative
feedback effect of the thyroid hormones on the
thyrotroph is shown. TRH thyrotrophin-releasing
hormone; TSH, thyroid stimulating hormone. T3,
triiodothyronine; T4,
Thyroxine"
- courtesy of Robert H.
Parsons, Ph.D., Rensselaer Polytechnic Institute,
used with permission
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