Nieto-Olmedo, P Power Doppler can detect the presence of 7-8 day conceptuses prior to flushing in an equine embryo transfer program. [electronic resource] - Theriogenology Mar 2020 - 1-9 p. digital Publication Type: Journal Article ISSN: 1879-3231 Standard No.: 10.1016/j.theriogenology.2020.01.015 doi Subjects--Topical Terms: AnimalsBlastocystBlood Flow VelocityEmbryo Transfer--veterinaryEmbryo, Mammalian--physiologyFemaleHorses--embryologyPregnancyPregnancy, AnimalTissue and Organ Harvesting--methodsUltrasonography, Doppler--methodsUterus--blood supply