The thyroid--a gland in search of a function.
D000222:Adaptation, Physiological; D000663:Amphibians / Q000502:physiology; D000818:Animals; D005075:Biological Evolution; D001833:Body Temperature Regulation; D005399:Fishes / Q000502:physiology; D006801:Humans; D007455:Iodine / Q000378:metabolism / Q000502:physiology; D013961:Thyroid Gland / Q000502:physiology*; D013963:Thyroid Hormones / Q000096:biosynthesis / Q000502:physiology; D014714:Vertebrates / Q000502:physiology*
D013963:Thyroid Hormones; D007455:Iodine