Changes of thyroid activity in the rat in old age.
D000375:Aging / Q000502:physiology*; D000818:Animals; D007455:Iodine; D007457:Iodine Radioisotopes; D051381:Rats; D013960:Thyroid Function Tests; D013961:Thyroid Gland
D007457:Iodine Radioisotopes; D007455:Iodine
AGING/physiology; IODINE/radioactive; THYROID GLAND/function tests