Competition between thyroxine and TRF at the pituitary level in the release of TSH.
D000201:Activation Analysis; D000818:Animals; D007031:Hypothalamus / Q000502:physiology*; D007456:Iodine Isotopes; D008297:Male; D010902:Pituitary Gland / Q000187:drug effects / Q000502:physiology*; D051381:Rats; D013972:Thyrotropin / Q000502:physiology*; D013974:Thyroxine / Q000008:administration & dosage
D007456:Iodine Isotopes; D013972:Thyrotropin; D013974:Thyroxine