THE MERCK VETERINARY MANUALmultimedia

Location(s)

  • Pregnancy Determination in Horses
  • Sonogram of 13-day conceptus, mare

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    Sonogram of 13-day conceptus, mare

    The anechoic (black) yolk sac moves throughout the uterine horns and body from day 6–16 of gestation. A specular reflector (white dash) is imaged at the dorsal and ventral aspect of the yolk sac.

    Courtesy of Dr. Patricia Sertich.

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