Dictionary of Human Evolution and Biology

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Chorionic Villus Sampling (CVS)

Method of sampling fetal chorionic cells by insertion of a catheter through the mother’s vagina and into the uterus. Used in the diagnosis of possible biochemical and cytogenetic disorders in the embryo, and usually performed in week 8-12 of a pregnancy. The chorionic villus is descended from the fertilized ovum. CVS presents a slightly higher risk to the fetus than amniocentesis. Aka chorionic villus biopsy.

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