Entrainment to non-24-h days and gestation length of golden hamsters.
D000818:Animals; D002940:Circadian Rhythm; D006224:Cricetinae; D005260:Female; D008027:Light; D008647:Mesocricetus; D010507:Periodicity; D010805:Physical Conditioning, Animal; D011247:Pregnancy; D011270:Pregnancy, Animal