title: Diurnal variation of plasma and pituitary thyrotropin (TSH) of rats.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D005260:Female; D007118:Immunoassay; D008027:Light; D010902:Pituitary Gland / Q000378:metabolism*; D051381:Rats; D012636:Secretory Rate; D013972:Thyrotropin / Q000097:blood / Q000378:metabolism*
chemical_list: D013972:Thyrotropin