Time course of thyroid response to rising and to falling blood levels of thyroxine.
D006801:Humans; D013960:Thyroid Function Tests; D013961:Thyroid Gland / Q000502:physiology*; D013974:Thyroxine / Q000097:blood*
D013974:Thyroxine
THYROID GLAND/physiology; THYROXIN/blood