Chorionic villus sampling



Chorionic villus sampling

By Mayo Clinic staff
Original Article:  http://www.mayoclinic.com/health/medical/IM00083
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Chorionic villus sampling

Illustration of chorionic villus sampling

During chorionic villus sampling, a thin tube is guided through the cervix (shown above) or a needle is inserted into the uterus to remove a sample of chorionic villus cells from the placenta. These cells contain a baby's genetic information.
IM00083

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