...性;胚胎遗传异常;胚胎移植技术 [gap=477]Keywords:recurrent implantation failure;endome-trial receptivity;embryonic defects;embryo transfer ...
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异常的表观遗传重编程是克隆胚胎发育失败的一个重要因素。
One critical factor of these developmental failures of cloned embryos is the aberrant epigenetic reprogramming.
胚胎移植前遗传学诊断（PGD）起源于90年代初，是怀孕的夫妇防止胎儿受到异常基因或染色体影响的一种有效措施。
PGD was first performed in the early 1990's as a way for couples to prevent the pregnancy of a child with genetic disease.
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