绒毛细胞、羊水脱落细胞及羊水，是产前诊断胎儿染色体异常、代谢病、基因病及某些其他类型胎儿异常的最佳材料。标本获取的质与量关系到产前诊断的准确性，取材带来的创伤程序又直接影响母胎安全。虽然目前公认绒毛取材及羊膜腔穿刺技术安全可行，但选择适当方法及器械，... Villus cells, amniotic fluid cells and amniotic fluid amniotic fluid, prenatal diagnosis of fetal chromosomal abnormalities, metabolic diseases, genetic diseases and some other types of fetal abnormalities the best material. The quality and quantity of the specimens are related to the accuracy of the prenatal diagnosis. The trauma procedure drawn from the specimens directly affects the safety of the mother’s fetus. Although currently recognized villus material and amniocentesis technology is safe and feasible, but choose the appropriate method and equipment, ...