今年11月份，一项新型基因治疗方法可以使数十名先天性黑蒙（Lebercongenitaurosis）的失明患者重新恢复视力，据悉，导致该失明疾病的根源在于人体缺少或损失一种叫做RPE65的基因。
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一夜狂饮可能导致一时性黑蒙，宿醉或者更严重的后果。那么为什么许多人依然对烈酒难以割舍？
A wild night of drinking can end in a blackout, a hangover or worse. So why do many people continue to pound back the booze?
但卡桑德拉说，她喜欢我的基因与她不同。例如，假如犹太人与其他犹太人生育，他们会增加孩子的乳腺癌和黑蒙性痴呆的风险。
But Cassandra said she likes that I have different genes, arguing that when, for instance, Jews procreate with other Jews, they increase their kids' risk for breast cancer and Tay-Sachs.
对一些罕见疾病，如亨廷顿氏舞蹈病和黑蒙性痴呆，通过基因信息就可以诊断。
For some rare disorders, such as Huntington's and Tay-Sachs, genetic information is a diagnosis.
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