查询词典 DNA

In the early stage of breast cancers, diploid cells (DNA quantity, 2C) and the nuclear size were slightly enlarged, while in the late stage of breast cancers, heteroploid cells (DNA quantity, 5C, even 9C) were seen and the nuclear size was significantly enlarged.

乳腺癌早期，细胞核为2倍体（DNA定量为2C），核面积略大；而乳腺癌晚期，可出现5C，甚至9C异倍体细胞，核面积明显增大。

To detect the DNA in the common blood disease in children can provide objective parameter for clinical diagnosis,judging prognosis and its therapy.Key words common blood disease DNA variation heteroploidy cell cycle

检测常见小儿血液病DNA可为临床诊断、判断其预后及其治疗提供客观的参考数据。

Under the condition of reaction system developed, primers designed specific to ESTs were screened against genomic DNA of inbreed line A from which the cDNA library was constructed. Among them, 18 pairs of primers showed the amplification.

在此反应体系下，以构建EST的白菜自交系A的DNA为模板，对设计的引物进行了筛选，发现有18对引物能对白菜DNA扩增出产物。

Higher concentration of barbaloin could convert DNA configuration of hepatoma carcinoma cell Bel7402 from superhelix to indention.

结果与结论芦荟大黄素以插入方式与DNA分子结合；较高浓度的芦荟大黄素苷能够使Bel7402肝癌细胞DNA由超螺旋构型转化为缺刻构型。

This technology has theadvantages of simplicity, accuracy, inexpensiveness, sensitivity and well-selectivity,and also can be compatible with DNA chips technology.

DNA电化学传感技术是一门涉及生物化学、电化学、医学及电子学等领域的交叉学科，具有简单、可靠、价廉、灵敏和选择性好等优点，并且与DNA生物芯片技术兼容。

The result indicate that the DPV DNA can be firstly detected 2 hours after inoculability from brain,liver,spleen,bursa of fabricius,thymus.

结果表明，接种2小时后即能够从脑、肝、脾、法氏囊、胸腺中检出DPV DNA.12小时，即可从心脏、肝脏、脾脏、肺脏、肾脏、十二指肠、直肠、法氏囊、胸腺、胰腺、脑组织、胸肌、食道、腺胃、血液、舌头、口腔分泌物、皮肤、骨髓和粪便等20种组织器官中检测到DPV的DNA。检出时间最早和检出率最高的组织器官为肝脏和脑组织。

These kinds of complexes have steady thermodynamics property and abundant information of photochemistry and photophysics,which can bond with DNA by the mode of insert,static,chimb-face combine.In this paper,bipyridyl was selected as ligand.

金属吡啶配合物与DNA相互作用的研究一直是生物无机化学领域十分活跃的研究课题，此类配合物的热力学性质稳定，光化学和光物理信息丰富，能够以插入、静电和沟面结合三种方式与DNA作用。

By carrying out ~1H spin-diffusion experiments,the domain sizes of DNA in the complexes were determined.The domain size of DNA is found to decrease greatly when the N/P ratio changes from 0.5 to 3 and changes only slightly with further increase of the N/P ratio.After making a thorough analysis and discussion on drug control release and gene delivery systems with general NMR techniques,we presents a method of 1D PFG NMR technique to realize quick observation on the Mw change of polymer during its degradation process.Moreover,according to the inverse Laplace transformation theory and based on a function of diffusivity distribution of polymer in solution,2D PFG NMR technique is developed to measure the Mw distribution of polymer.Combined with Monte Carlo simulation,the degradation mechanism can be figured out.

从发展新的核磁共振方法，拓展核磁技术应用范围的角度来看，本文首次提出了采用一维脉冲梯度场技术快速测量降解过程中聚合物的分子量变化的新方法；并首次将Monte Carlo模拟与PFG实验结果进行了关联分析，从而不仅可以实时观测体系分子量的变化，而且可以对体系的降解机理进行深入分析；首次将延伸型指数函数引入对自扩散曲线的拟合，并通过反拉普拉斯变换，建立了一种实时测量聚合物体系分子量分布的新方法；首次将固体核磁共振的研究方法，引入聚合物/DNA复合物体系的研究。

Using the latest DNA-sequencing technology, Dr Krause and his colleagues worked out the order of the genetic "letters" of over 1m fragments of DNA from their sample.

利用最新的DNA排序科技，Krause和他的同事在他们的样品含有超过1百万的碎片中找出了基因的"字母"顺序。

A Plasmid DNA vaccine pcDNA-gB expressing gB protein of infectious laryngotracheitis virus Yantai strain was constructed. The expression of viral protein from constructed DNA vaccine was confirmed by an in vitro transcription /translation system and transtection in 293-T cells.

本研究构建了编码ILTV主要抗原gB基因的重组DNA疫苗pcDNA-gB，质粒转染293-T细胞的间接免疫表明其表达的蛋白具有免疫反应性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。