title: Periodicity of serum prolactin concentration.
mesh_terms: D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008297:Male; D011388:Prolactin / Q000097:blood*; D013972:Thyrotropin / Q000097:blood; D013973:Thyrotropin-Releasing Hormone / Q000502:physiology
chemical_list: D013973:Thyrotropin-Releasing Hormone; D011388:Prolactin; D013972:Thyrotropin