The chorionic villi cells may be used for chromosome analysis or other genetic testing. 这些绒毛膜绒毛细胞可被用于染色体分析或其他遗传学测试。
It involves removing a small amount of tissue called the chorionic villi, which is located on the outside of the fetal gestational sac and will later become the placenta. 该检验将少量位于胚胎胎囊外部叫做绒毛膜绒毛的组织移除，该组织未来将成长为胎盘。
