THE MERCK VETERINARY MANUALmultimedia

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  • Pregnancy Determination in Horses
  • Sonogram of 37-day conceptus, mare

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    Sonogram of 37-day conceptus, mare

    By 37 days of gestation, most of the anechoic fluid in the conceptus is allantoic fluid, and the yolk sac is a very small anechoic space dorsally. The fetus is suspended at the dorsal aspect of the conceptus by the umbilical cord.

    Courtesy of Dr. Patricia Sertich.

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