◎ 非倍数染色体的筛检（PGD for aneuploidy screening，PGD-AS），是目前使用最为普遍的PGD。◎ 高龄妇女、有习惯性流产病史、多次试管婴儿失败等等都可适用。
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But PGD is starting to be used to target less-serious disorders or certain characteristics — such as a baby's gender — that aren't medical conditions.
但是PGD的目标开始转移向那些没那么严重的疾病或者某些特定的特征，比如孩子的性别，而这不再是医疗范畴了。
He plans to offer his PGD amplification technique to fertility clinics for medical purposes such as screening for complex disorders, but won't let it be used for physical trait selection.
他计划将他的技术提供给生育研究所用来进行检查复杂疾病这样的医疗行为，而不是用来选择生理特征。
While it's technologically possible, whether any deaf or dwarf babies have been born as a result of PGD is uncertain.
即使技术允许，任何经基因筛检出的聋或矮宝宝是否能出生也是不确定的。
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