Merck Manual

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To check whether a mare is pregnant, a veterinarian can perform ultrasonography by inserting the wand into the horse’s rectum.
To check whether a mare is pregnant, a veterinarian can perform ultrasonography by inserting the wand into the horse’s rectum.
To check whether a mare is pregnant, a veterinarian can perform ultrasonography by inserting the wand into the horse’s rectum.
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Diagnostic Imaging