About: http://webisa.webdatacommons.org/3620477

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A small amount of tissue from the cells that line the placenta (called the chorionic villi) are removed through the cervix or abdomen with a needle and screened for Down syndrome and other abnormalities.
http://www.w3.org/ns/prov#wasQuotedFrom	whattoexpect.com