title: Chronobiological studies of plasma prolactin in women in Kyushu, Japan, and Minnesota, USA.
mesh_terms: D000293:Adolescent; D000328:Adult; D000375:Aging; D001943:Breast Neoplasms / Q000097:blood*; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D007564:Japan; D008598:Menstruation; D008875:Middle Aged; D008910:Minnesota; D011388:Prolactin / Q000097:blood*; D012306:Risk; D012621:Seasons
chemical_list: D011388:Prolactin