目的研究柯萨奇B组3型病毒（CVB3）中国分离株结构蛋白VP4、非结构蛋白3D基因序列及变异性。
Objective To investigate the sequence and variation of VP4 and 3D gene of a coxsackievirus B3 Chinese isolate(CVB3-Chi).
TTV的基因分型从已报道的TTV DNA部分基因序列来看，TTV DNA具有高度变异性，采用聚合酶链反应(PCR)检测血清ttv DNA是诊断ttv感染的主要手段。
Genotyping of TTV: according to reported part gene order of TTV DNA, it has high variability. To detect TTV DNA in blood serum by PCR is the maim means to diagnosis the TTV infection.
结果表明，这三种方法用于形变数据序列的性态特征分析是可行的，可以用来确定沉降数据序列的变异性、混沌性及分形维特征。
The result shows the three methods can be used in deformation series-data character analysis, and to determine variability, chaos and fractal dimension character.
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