Day 156|耐力练习

原文摘自每日英语听力“VOA慢速英语频道”6.6内容。

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U. S. officials have approved the costliest medicine in history – a $2.1-million gene therapy that treats a rare childhood disease.

Gene therapy is a medical treatment in which healthy genetic material is introduced into cells to replace abnormal genes.

The new gene therapy targets a disease called spinal muscular atrophy or SMA, which severely weakens a child's muscles.

The treatment, called Zolgensma, was developed by Swiss drugmaker Novartis.