It can be done before birth via chorionic-villus sampling or amniocentesis.
它出生前通过绒毛-绒毛取样或刺术完成。
This can also be done prenatally by testing fetal DNA obtained through either chorionic villus sampling or amniocentesis.
产前通过检测胎儿DNA完成,如绒毛绒毛取样或刺术。
A karyotype can be done before birth with an amniocentesis or at any time after birth with the blood test.
核型分析出生前就用刺术取样或出生后采血取样。
In more serious cases, amniocentesis, where a sample is taken directly from the amniotic sac surrounding the fetus, can be performed.
严重的情况下,需行刺术,即直接从胎儿周围的囊刺取样检查。
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