"Chorionic villus" refers to tiny finger-like structures that grow from the placenta during pregnancy. They help provide oxygen and nutrients to the developing baby inside the womb. Full definition
He pioneered the development of chorionic villus sampling (CVS) and multi-fetal reduction. (agbt.org)
Just like chorionic villus sampling (CVS), a procedure done in the first trimester, amniocentesis produces a karyotype — a picture of your baby's chromosomes — so that your caregiver can see for sure if there are problems. (babycenter.com)
Trisomy 16 or mosaic trisomy 16 can also be diagnosed during pregnancy through chorionic villus sampling (CVS) or amniocentesis. (verywellfamily.com)