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1·Procyclic trypanosomes were electroporated with linearised plasmid DNA and selected for resistance to phleomycin.

用线性化质粒 DNA 电穿孔前环锥虫体，筛选其对磷霉素的抗性。

2·Plasmid DNA was extracted by alkaline lysis method.

碱裂解法提取质粒。

3·The plasmid DNA was extracted by alkaline cleavage method.

用碱裂解方法抽提质粒。

4·Conclusion: Plasmid DNA could influence SR Ca 2 + transport.

结论：外源质粒dna可影响肌质网钙转运功能。

5·Objective: Study on extraction of plasmid DNA with phenol-chloroform from clone.

目的：对用酚-氯仿直接从克隆中提取质粒dna的方法进行了研究。

6·Objective To explore a procedure for preparation of plasmid DNA for gene therapy.

目的探索基因治疗用质粒DNA的制备工艺。

7·Results show that carbon source, nitrogen source affected plasmid DNA yield significantly.

实验结果表明：碳源、氮源对质粒dna产量有明显的影响。

8·Supercoiling is necessary for the expression of recombinant plasmid DNA at transcription level.

超螺旋化对于质粒dna在转录水平上的表达是必需的。

9·The transformability of plasmid DNA in B. subtilis competent cell depends on its molecular structure.

枯草芽孢杆菌感受态细胞的质粒转化与质粒的分子构型有关。

10·Aim: To investigate the effects of injecting plasmid DNA into toad skeletal muscle on its contractility.

目的：应用蟾蜍坐骨神经腓肠肌标本，观察肌内注射质粒DNA后不同时间对肌肉收缩功能的影响。