查询词典 chain reaction

Mitochondrial coxI,atp6 and orf25 DNA fragments for 12 species, which belong to two subgenera Pinus and Strobus of the genus Pinus, were amplified by polymerase chain reaction using gene specific primers. Their partial sequences were obtained by directly sequencing the PCR products with the same sets of primers.

本研究利用PCR和PCR产物直接序列分析技术，获得了分属于松属两个亚属Pinus和Strobus12个松树种coxI，atp6和orf25三个线粒体基因DNA片段的序列。

Polymerase chain reaction amplification of a portion of a gene encoding a surface protein of Wolbachia was used to detect the Wolbachia infection of the population of Pteromalus puparum and Nasonia vitripennis by universal primers of wsp gene and the specific primers for wsp genes of A and B Wolbachia supergroup.

采用Wolbachia 的通用引物及A和B大组特异性引物对蝶蛹金小蜂Pteromalus puparum和丽蝇蛹集金小蜂Nasonia vitripennis体内Wolbachia的wsp基因进行PCR扩增及序列测定，并对测定的序列进行了同源性比较和基因特征分析。

Abstract］Objective: To distinguish Taenia asiatica from Taenia saginata by cox1 gene fragment sequence amplified with conventional polymerase chain reaction method.

目的：用cox1基因片段的PCR技术对亚洲带绦虫和牛带绦虫的快速鉴别。

DNA fingerprinting for Taraxacum mongolicum and its adulterants of six species of Compositae was demonstrated with random primed polymerase chain reaction including arbitrarily primed PCR and random amplified polymorphic DNA.

采用分子生物技术包括任意引物聚合酶链式反应和随意引物扩增的多态性DNA方法扩增蒲公英及其6种土公英混淆品的基因组DNA，获得清晰可靠的DNA指纹图谱。

Chinese drug ; identification ; Taraxacum mongolicum ; polymerase chain reaction ; DNA fingerprinting

药材鉴定；蒲公英；聚合酶链式反应； DNA指纹图谱

His mission is to breakthrough security perimeter of Alienation Zone and to prevent development of thermonuclear chain reaction in the middle of the 'Shelter' object, which hides half destroyed nuclear reactor at Chernobyl nuclear power plant.

影子地带是一款基于电影改编的步战略游戏，游戏主人公是一位接受任务---保护地球免遭高热原子核反应灾难的英雄，他的主要任务是：突破Alienation地区的安全防线，阻止在在一个被称为"Shelter"的设备中进行的高热原子核反应试验，该设备拥有着半个切尔诺贝利核电站核反应堆爆炸的能量！

Objective To evaluate the therapeutic effect of azithromycin on infant toxoplasmosis patients by using fluorescence quantitative polymerase chain reaction.

目的探讨荧光定量聚合酶链反应用于评价阿奇霉素治疗儿童弓形虫病的效果。

Objective To investigate the age distribution of the active trachoma and evaluate the significance of trachoma classi-ficltion and ligase chain reaction.

目的 了解活动性沙眼患者的年龄分布，评价WHO简易沙眼分级法和连接酶链反应诊断沙眼衣原体的意义。

Methods The expression plasmid pSVvWF containing full-length cDNA of vWF was used to site direct mutagenesis by polymerase chain reaction and transitorily expressed in the COS-7 cells, vWF:Ag in the supernatant and the cell lysate between wild type and pSVAla737Glu vWF were measured.

用聚合酶链反应的方法对野生型的vWF全长表达质粒进行体外定点诱变，在COS-7细胞中进行表达。

Methods SYBR Green I real-time polymerase chain reaction was used to detect the expression of VEGF mRNA in articular cartilage from 20 OA patients and 10 controls with traumatism. VEGF protein was detected by enzyme-linked immunosorbent assay in articular cartilage.

应用SYBR Green Ⅰ实时定量聚合酶链反应检测20例OA和10例外伤患者关节软骨中VEGF mRNA表达，并用酶联免疫吸附试验测定关节软骨组织VEGF含量。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。