only t3 will have negative feedback, t4 goes there and its converted ONSITE by 5'mono deiodinase to form t3 which causes negative feedback of tsh.
source : kaplan physio book!
source : kaplan physio book!
Who's doing the negative feedback, T3 or T4?
What exerts a negative feedback on the hypothalamus? free T3 or T4 levels?
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