Background: Currently very few noninvasive molecular genetic approaches are available to determine zygosity for twin......

目的 探讨子痫前期孕妇血浆中超甲基化的Ras相关区域家族1A(ras association domain family 1A,RASSF1A)基因的水平变化及应用价值......

检测孕妇外周血中胎儿游离DNA，为无创产前诊断及妊娠相关性疾病的防治找到了新途径，此种技术具有诸多优势。孕妇外周血中胎儿游离DNA......