The results suggested that tetranucleotide tandem repeat ( TTTA ) n of apolipoprotein B gene was genetic polymorphism and heterogenous among population .

结果说明：载脂蛋白B基因 四核苷酸串联重复（TTTA）n具有遗传多态性和种族特异性如标准之间交叉，重复，又有空白；

Results There was no association between AD and the tetranucleotide polymorphism ;

结果AD与 LRP 基因 上游 区域 5 ′ 端 插入 序列多态性无关联；

The screening and polymorphic analysis of bovine tetranucleotide STR loci

牛 四 核苷酸STR基因座的筛选和多态性分析

Genetic polymorphism of apolipoprotein B tetranucleotide tandem repeat ( TTTA ) n

载脂蛋白B 基因 四核苷酸串联重复序列（TTTA）n遗传多态性研究

Objective : To explore the relationship between the Gene Polymorphism of apolipoprotein B tetranucleotide tandem repeats ( TTTA ) n and coronary heart disease ( CHD ) .

目的：探讨载脂蛋白B 四核苷酸串联重复序列（TTTA）nw_391基因多态性与冠心病（CHD）的关联。

A polymorphic tetranucleotide short tandem repeat ( STR ) sequence in intron 3 of the phenylalanine hydroxylase ( PAH ) gene was analysed in 52 normal individuals and 23 Phenylketonuria ( PKU ) families by PCR amplification and silver staining .

应用PCR结合银染显色法分析了苯丙氨酸羟化酶基因内含子3中1个 四核苷酸（TCTA）重复序列的多态性。

Results By asymmetric PCR half of shadow bands of dinucleotide repeats were eliminated and there was only one band for each allele for tetranucleotide sequence .

结果利用不对称PCR，某些二核苷酸（CA）n重复序列的影子带减少一半， 四核苷酸重复序列的影子带消除；

Objective To investigate whether the polymorphism of the tetranucleotide repetitive sequence located 5 ′ to the MBP gene exon 1 contributes to the susceptibility to multiple sclerosis in Chinese population .

目的探讨中国人群中多发性硬化 （ MS ） 的 遗传 易 患性与髓鞘碱性蛋白基因5′ 端 四核苷酸重复序列多态性的相关性。

Based on tetranucleotide parameters a statistical mechanical model was suggested to analyze the flexibility of the Escherichia coli genome .

基于 四核苷酸参数提出一个统计力学模型用于分析大肠杆菌基因组柔性。

To determine the distributional characteristics of CTG trinucleotide repeat and CCTG tetranucleotide repeat in healthy individuals from Chinese Han nationality .

研究我国正常汉族群体DMPK基因CTG重复序列和 ZNF9基因CCTG重复序列的分布特征。

Objective : To study the feasibility of five selected tetranucleotide repeat sequences detect chimerism of patients who underwent allogeneic peripheral blood stem cell transplantation ( allo-PBSCT ) and the correlation between chimerism status and prognosis of patients .

目的用检测5个 四核苷酸重复序列了解异基因干细胞移植后嵌合状态以及预后的关系。这些 突变 相应 地 引起 RNA的CUG、CCUG 三、四核苷酸重复，导致DM1、DM2多种系统症状发生。