Use of echography in rats for pregnancy diagnosis.
D000818:Animals; D005260:Female; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011270:Pregnancy, Animal; D051381:Rats / Q000502:physiology*; D011919:Rats, Inbred Strains; D014463:Ultrasonography / Q000662:veterinary*