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1·Subacute sclerosing panencephalitis(SSPE)is a serious disorder of central nervous system caused by defective measles virus.

亚急性硬化性全脑炎 （SSPE）是由缺陷型麻疹病毒引起的严重的中枢神经系统疾病。

2·Objective:To construct a recombinant defective retroviral vector carrying hNT3 gene and a stable virus-producing packaging cell lines , and then to identify them.

构建并鉴定携带人NT - 3基因的逆转录病毒载体以及稳定的包装细胞系。