单词	chorionic villus sampling
释义	chorionic villus sampling noun : biopsy of a villus of the chorion at usually 10 to 12 weeks of gestation to obtain fetal cells for the prenatal diagnosis of chromosomal abnormalities —abbreviation CVS called also chorionic villi sampling Example Sentences Recent Examples on the Web The high-probability patients are offered a more invasive diagnostic test using DNA either from the fetal cells floating in the amniotic fluid (amniocentesis) or from placental tissue (chorionic villus sampling). Sarah Zhang, The Atlantic, 18 Nov. 2020 Deborah and Ariel Levy sued for damages, alleging the physician who had performed the chorionic villus sampling procedure had mistakenly removed maternal tissue instead of fetal tissue. Bonnie Rochman, Slate Magazine, 3 Mar. 2017 Word History First Known Use 1983, in the meaning defined above Medical Definition chorionic villus sampling noun variants also chorionic villi sampling : biopsy of the chorion frondosum through the abdominal wall or by way of the vagina and uterine cervix at 10 to 12 weeks of gestation to obtain fetal cells for the prenatal diagnosis of chromosomal abnormalities —abbreviation CVS
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