Frequency of transuterine migration of embryos in ewes and cows.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D010060:Ovulation; D011247:Pregnancy; D012756:Sheep / Q000502:physiology*; D014427:Twins; D014599:Uterus