筛检母体血清鉴定胎儿Ｄｏｗｎ＇ｓ综合征目前常规是在妊娠第二个三个月内进行的，如在妊娠首三个月通过血清检测或超声波影像方法或两者结合使用进行出生前筛检，或许也是可能的。方法本文检测４４１２名妇女血清中五种指标：α－胎儿蛋白、未结合雌三醇、人体绒毛膜促性... Screening of maternal serum Identification of fetal Down’s syndrome is currently routinely performed within the second trimester of pregnancy, as in the first trimester of pregnancy by serum or ultrasound imaging or a combination of both for prenatal screening , Perhaps it is possible. Methods In this paper, 4412 women serum five indicators: α-fetoprotein, unbound estriol, human chorionic ...