title: A change in the period of activity in rats kept under constant dim red light from before to after parturition.
authors.forename: G
authors.initials: G
authors.lastname: Cornelissen
authors.forename: E
authors.initials: E
authors.lastname: Haus
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D005260:Female; D008027:Light; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D051381:Rats; D012107:Research Design