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应用绒毛组织进行产前诊断,是近代的一项重要进展,它有以下优点:①取材时间比抽取羊水早8周左右,能在妊娠的头3个月内作出诊断,使治疗性流产的时间相应提前,减少孕妇的焦虑和负担;②终止妊娠只需在门诊进行快速、安全、简便的吸刮术,可以避免住院和中期引产的种种危险;③取材在羊膜囊外进行,对胎儿损伤可能性小;④孕早期,绒毛生长旺盛,功能活跃,可以不经培养,直接制备染色体;⑤羊水细胞来自己分化的胎儿上皮细胞,不如绒毛细胞的生化功能是多方面的,可直接作酶、激素和
Application of villus tissue for prenatal diagnosis is an important progress in modern times, it has the following advantages: ① drawing time than amniotic fluid as early as about 8 weeks, can be diagnosed within the first 3 months of pregnancy, so that the time of therapeutic abortion Corresponding advance to reduce the anxiety and burden of pregnant women; ② termination of pregnancy just in the clinic for quick, safe and easy suction curettage, can avoid the dangers of hospitalization and mid-term induction of labor; ③ drawn in the amniotic sac, the fetus may be damaged ⑤ amniotic fluid cells to their own differentiation of fetal epithelial cells, as villus cells biochemical function is multifaceted, can be used directly as enzymes, Hormones and