目的：探索线粒体dna点突变与遗传性共济失调的关系。
Objective: to study the possible relationship between mitochondrial DNA point mutations and hereditary ataxia.
目的研究线粒体dna点突变与遗传性共济失调(HA)的关系。
Objective to study the possible relationship between mitochondrial DNA point mutations and hereditary ataxia (HA).
目的研究遗传性脊髓小脑性共济失调7型（SCA7）的基因突变和临床特征。
Objective To study the gene mutation and clinical characteristic of hereditary spinocerebellar ataxia type 7 (SCA7).
目的研究遗传性脊髓小脑性共济失调7型（SCA7）的基因突变和临床特征。
Objective To study the gene mutation and clinical characteristic of hereditary spinocerebellar ataxia type 7 (SCA7).
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