查询词典 DNA

DNA scission chemistry shows that the drug can cleave supercoiled DNA into open-circular form at low concentration without addition of H〓O〓 or UV irradiation.

DNA断裂化学实验结果表明，我们合成的产物可以在很低的浓度下切割pBR322 DNA。

Upon initiation of PCR after the denaturation phase, the single-stranded DNA fragments flanked by inverted terminal repeats may form either self-annealing "pan-like" structures (preventing the primer binding to its complementary binding sites and suppressing the PCR) or DNA/primer hybrid structures.

经聚合酶链反应开始后，变性阶段，单链 DNA片段两侧末端反向重复序列可能两种自我退火"泛，如"结构（防止引物结合到其互补性结合位点和制止的PCR ）或DNA /引物混合结构。

The thesis consists of six chapters. In the first, the technologies of atomic force microscopy and of the measurement elasticity of biomolecules were introduced. In the second, the validity of VSPFM was confirmed by lift mode atomic force microscopy. In this chapter, the height of DNA was measured by lift mode atomic force microscopy, which demonstrated that the method of height measurement of biomolecules by VSPFM was correct and established the foundation of the method of measurement elasticity of biomolecules by vibrating mode scanning polarization force microscopy. In the third chapter, detailed work has been illustrated on the foundation of the method of measurement elasticity of biomolecules by VSPFM. And the compressive elasticity of DNA was measured. In fourth and fifth chapters, the method was applied in the measurement elasticity of proteins. Two proteins elasticity, fibre-like protein α-synuclein and global protein IgG, were measured by VSPFM, through which the method wound its way to the application of biomolecules. In last chapter, the final part of the thesis was a summary. A conclusion of the thesis and a self-comment on my work as a PhD candidate have been made, and expectation about the further works has been addressed.

本论文共分为六章，第一章，引言部分主要介绍了原子力显微镜技术及生物大分子弹性测量技术；第二章主要是VSPFM方法的正确性论证，介绍抬高模式原理，利用抬高模式原子力显微镜对DNA的高度进行测量，论证振动模式扫描极化力显微镜测量生物大分子的高度的正确性以及准确性，从而为振动模式扫描极化力显微镜测量生物大分子的弹性方法的建立奠定基础；第三章以脱氧核糖核酸为例详细介绍了振动模式极化力显微镜测量生物大分子弹性的方法的建立，对DNA的压弹性进行了初步的测量和分析；第四章和第五章介绍了振动模式扫描极化力显微镜在蛋白质弹性测量中的应用：α-synuclein和IgG分别是纤维状蛋白和球状颗粒蛋白，通过振动模式扫描极化力显微镜测量这两种蛋白质的弹性，摸索振动模式扫描极化力显微镜在蛋白质弹性测量中的应用；第六章对全文进行了总结，在对论文的工作进行归纳和自我评价之后，还对进一步的工作进行了展望。

Paper folding is easy, it is difficult to fold DNA, fold DNA into the figure of copy China domain that has line of sinuate border land, more extremely difficult.

折纸轻易，折 DNA 难，把 DNA 折成拥有弯弯曲曲边境线的仿中国版图外形，更是难上加难。

Results Solanine (37.50、18.75mg/kg) groups reduced the ratio of RNA and DNA in tumor cell of both S180 and H22 mice, Conclusion Solanine can reduce the ratio of RNA and DNA in tumor cell of S180 and H22, which may be one of the mechanisms of solanine's antitumor effect.

结果 龙葵碱(37.50、18.75mg/kg)组对S180和H22小鼠肿瘤细胞RNA和DNA的比值均有明显的降低作用。结论龙葵碱降低S180和H22小鼠肿瘤细胞RNA和DNA的比值可能是其抗肿瘤作用机制之一。

Methods Selective lysis of spermatid and epithelial cells combined with paramagnetic particle method were applied to extract the DNA from the mock samples under controlled conditions and forensic case samples, and template DNA were analyzed by STR genotype method.

采用差异提取试剂盒，选择性裂解精细胞和上皮细胞，结合磁珠法分别对人为控制条件下制备的模拟混合样本和案件中的混合斑检材进行精细胞DNA和上皮细胞DNA的分离提取。

This innovative DNA-sequencing technology was invented by Dr. Jingyue Ju, professor of Chemical Engineering and head of DNA Sequencing and Chemical Biology at the Judith P. Sulzberger, M.D.

这项革命性的DNA测序技术是由化学工程教授Jingyue Ju博士和哥伦比亚大学哥伦比亚基因组中心DNA测序和生物化学系主任Judith P。

Superpure DNA can be prepared using RNA transcribed from DNA in the course of gene expression.

在基因表达期间，使用从DNA 转录而来的RNA可制备出超纯度的DNA。

The main results were as follows:①The genomic DNA extraction method from TCK/TCT teliospore was established, which include cell wall lysis of teliospore by alkali solution, destroying teliospore cell wall for releasing nucleic acid from cytoplasma membrain and elimination of the PCR inhibitors such as pigments or polyphenols component.

论文主要研究结果如下：①优化了碱裂解法破冬孢子外壁-CTAB破坏原生质体，释放核酸-微量DNA过滤柱去除色素、多酚等PCR抑制物质的TCK/TCT冬孢子提取方法，排除了冬孢子细胞壁难破DNA难以提取，三甲胺、色素等PCR抑制物质导致假阴性的难题，采用此方法提取的腥黑穗菌DNA完全适用于PCR扩增。

Traditional withdrawing cannot how under this kind of protection with the digestion method the skeleton cell, must use the new method to be able to cause in the skeleton cell DNA to leave from the structure middle reaches, but drifts away at the same time, fears the DNA frail double strand not to be able to undergo fiercely shakes with the intense chemical action, therefore this request must relatively temperately use one kind to withdraw the method.

传统让步无法怎么在这保护之下以消化方法最基本的细胞，必须使用新方法能导致在最基本的细胞DNA 离开从结构中间伸手可及的距离，仅漂泊去，恐惧DNA 虚弱双子线同时不能剧烈地接受震动以强烈的化工行动，因此这个请求必须相对地温和地使用一种类撤出方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。