title: Changes in thyrotropic activity of the hypophysis with organism growth and aging.
mesh_terms: D000375:Aging; D000818:Animals; D008297:Male; D010902:Pituitary Gland / Q000502:physiology*; D051381:Rats; D013972:Thyrotropin / Q000378:metabolism*
chemical_list: D013972:Thyrotropin