So-called recessively inherited disorders, such as Tay-Sachs disease, cystic fibrosis and red blood cell disorders known as thalessemias are rare.
所谓隐性遗传疾病，像“泰-萨克斯病”、“囊性纤维化”，以及被称为“地中海贫血症”的血细胞疾病，都很罕见。
PGD has been offered by the NHS for more than a decade for serious diseases that come early in childhood, like cystic fibrosis or Tay Sachs, a neurological disease.
NHS提供PGD技术已经超过10年时间了，用来治疗一些早在儿童时期发病的严重疾病，例如囊性纤维化(属遗传性胰腺病)或者叫泰萨氏病的一种神经学疾病。
PGD is good for screening for specific genetic disorders such as cystic fibrosis and Tay-Sachs disease, and also can be used to select gender.
PGD适用于特殊遗传病的筛查，如囊性纤维化和神经节苷脂病，而且PGD也可以用于性别选择。
These enlarged, pale neurons are in a baby with Tay-Sachs disease, which is seen mostly in persons of European Jewish heritage.
Sachs病的婴儿会出现扩大的苍白色神经元，这在欧洲犹太后裔最常见。
These enlarged, pale neurons are in a baby with Tay-Sachs disease, which is seen mostly in persons of European Jewish heritage.
Sachs病的婴儿会出现扩大的苍白色神经元，这在欧洲犹太后裔最常见。
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