查询词典 DNA

MethodsOur study was to treat gastric ulcer by invigorating spleen and benefiting vital energy Chinese drugs through clinical observation and experimental research, and compared with mucosa protectant -gastropine and H2 receptor antagonist -famotidine about the mucosa mitochondrion 8-oxygen guanine DNA glycosylase, thymine glycol DNA glycosylase,3-methyl adenine DNA glycosylase, the effect of gastralgia, splenic asthenia and quality of ulcer recovery.

比较健中愈疡片、黏膜保护剂胃舒平以及H2受体拮抗剂法莫替丁对胃黏膜线粒体 8－氧鸟嘌呤DNA糖基化酶、胸腺嘧啶乙二醇DNA糖基化酶、3－甲基腺嘌呤DNA糖基化酶的影响，并进行健脾益气方药与黏膜保护剂胃舒平以及H2受体拮抗剂法莫替丁对胃溃疡愈合质量的比较和评价。

He says the fossil was like nothing he had seen before."I did several analyses to make sure that this DNA is authentic, that this DNA is really old and that this DNA is what had seemed to be a new hominine lineage," he said.

他说这个化石和他之前所见过的完全不同：「我进行几项分析，以确定这个DNA是真的，这个DNA的确很老，而且这个DNA似乎属於一个新人种的谱系。

Our previously study has been showed that transgenic N.benthamiana and N.tabacum plants expressing TYLCCNV DNAβC1 developed pleiotropic morphologic abnormalities such as leaf curling,distortion and interveinal protuberances on the abaxial surface. To determine whether theβC1 protein of TbCSY is also responsible for symptom induction,we prepared transgenic N.benthamiana and tomato plants expressing the TbCSV DNAββC1.Of the rooted plantlets,only 10%of transgenic N.benthamiana plants were moderately abnormal,including upward leaf curling.

DNAβ互补链上编码一个保守的ORF，即βC1，对TYLCCNV DNAβ的βC1的突变发现它编码一个症状决定因子，表达TYLCCNV DNAβ的βC1的转基因烟草产生曲叶、畸形和叶背面组织增生等发育异常的表型，而大部分转化TbCSV DNAβ的βC1基因的烟草和番茄植株均与正常植株类似，只有少数烟草表现出轻微叶上卷表型。

mitochondrial dnais the only inheritant substance except for the nuclear dna in a euˉkaryon cell,which is related to the oxidative phosphorylation of a cell.mitochondrial dna is the important target of carcinogens and is vulnerable because of its structure and function.the mutation of mtdna could reduce the nomal respitation and release large quantities of ros,whichincrease the danger of cancer happening.so,mtdna has been thought to be involved in carcinogenesis and recently more and more studies in this aspect have comeout.in this paˉper,we review the researches for relationship among mtdna mutation and tumors in digestion system,woman system,head and neck,urinary systemand blood system.

线粒体dna（mitochondrial dna，mt dna）是真核细胞中唯一存在的独立于核dna之外的遗传物质，与细胞的氧化磷酸化功能密切相关。mtdna自身的结构和功能特点决定了它是致癌物作用的重要靶点，易受致癌因素的损伤而发生突变。mtdna的突变可削弱正常的呼吸功能，释放高水平的活性氧，进而增加肿瘤发生的危险性，所以mtdna被认为与肿瘤发生有密切关系。近年来，这方面的研究越来越多，本文现就mtdna突变与消化系统肿瘤、妇科肿瘤、头颈部肿瘤、泌尿系统肿瘤等实体瘤以及血液系统恶性肿瘤之间的关系作一简单的综述。

Reactions of 2-methyl-1,4 naphthoquinone with human telomeric DNA and telomerase RNA ESR spin elimination has been used with 4-oxo-TEMPO as spin trap. The reactivities of 3VK3* with telomeric DNA, template of telomerase RNA and its L6-P6 region have been confirmed respectively. The results show that the reactivity of 3VK3* with polynucleotides is directly proportional to their G amount, and the one for reaction of 3VK3* with telomeric DNA is the highest in polynucleotides. 2. Reactions of 2-methyl-1,4 naphthoquinone with nucleosides, nucleotides ESR spin elimination has been used with 4-oxo-TEMPO as spin trap.

2-甲基-1，4萘醌与端粒DNA及端粒酶RNA亚基光敏反应性的研究应用ESR自旋消减法，对2-甲基-1，4萘醌(VK3)与端粒DNA重复序列、端粒酶RNA亚基模版序列、端粒酶RNA亚基L6-P6发夹区关键序列的光敏反应性进行了研究，结果表明，在一定波长照射下，明显诱导VK3与上述寡聚核苷酸反应，其反应性大小与核酸中鸟嘌呤含量正相关，其中端粒DNA序列反应性最强。

Results: The ranges of MIC of DNA-2E on trichophyton rubrum and beard-like trichophyton were 0.0625~0.125mg/mL and 0.03125~0.125mg/mL respectively; of which there was no significant difference between the two fungi. Both 2% and 4% DNA-2E had better effects on ringworm of guinea pig in feet and body infected by beard-like trichophyton, which showed significant difference compared to distilled water and no significant difference compared to 1% Zuguang powder. Both 4% and 6% DNA-2E had better Antipruritic effect, which showed no significant difference compared to 2% Zuguang Powder and significant difference compared to distilled water.

结果：癣清(DNA-2E)对红色毛癣菌、须状毛癣菌的最低抑菌浓度范围分别为0.0625~0.125mg/mL和0.03125~0.125mg/mL，两组比较差异无显著性；2%和4%癣清(DNA-2E)对豚鼠须状毛癣菌感染足癣、体癣有较好疗效，与1%足光粉比较差异无显著性，与蒸镏水组比较差异有高度显著性；4%和6%癣清(DNA-2E)止痒作用与1%足光粉相比差异无显著性，与蒸镏水组比较差异有高度显著性。

The histone octamer may protect the wrapped DNA from interacting with other environmental factors such as transcription regulating proteins, thus the positioning of nucleosomes along DNA may play important roles in multiple cellular processes including DNA replication, transcription and damage-repair.

由于核小体结构中的DNA缠绕在组蛋白八聚体上，可能影响这些DNA与细胞内的其他蛋白相互作用，从而影响到DNA复制、转录等生物学过程，因此，核小体在基因组上的位置分布可能对基因组功能具有重要的调控作用。

In this review, the typical biomarkers of the DNA damages, such as DNA adducts, strand breaks and altered sequence in DNA, and their measuring methods are discussed emphatically. It is thought that the application of these biomarkers offers broad prospects for early diagnosis and assessment of environmental toxicants.

本文重点介绍了一些典型的DNA损伤(如DNA加合物、断裂、DNA 序列改变等)的生物标记物及其检测方法；认为这些生物标记物在环境污染物的早期诊断和评价方面具有广阔的应用前景。

For a small molecule, what part intercalates into DNA strand is of vital importance because the investigation of interaction of DNA with other molecules is of great importance in elucidating the structure of DNA and their functions.

在第一章中，首先介绍了DNA的结构，然后重点介绍了金属配合物与DNA的作用机制，并总结了目前较为常用的抗癌药物与DNA相互作用的研究方法，最后，对本论文研究的目的和意义进行了说明。

As RNA polymerase moves along the DNA template, it unwinds the duplex at the front of the bubble, and rewinds the DNA at the back. The length of the transcription

当RNA聚合酶沿DNA模板移动时，它打开泡前的DNA双螺旋，并在复链点使DNA复原，转录泡的长度随增长反应阶段而异，在12-20bp之间，但其中的RNA-DNA杂交体区域比这个长度要短。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。