查询词典 DNA

Five methods namely improved CTAB method, CTAB-silica extraction method, SDS method, low pH extraction method with high salt and Zhou shiliang method were adopted to extract genome DNA from the leaves of Citrus aurantium. And three methods including ultraviolet spectrophotometer, agarose gel electrophoresis and SSR-PCR amplification were used to detect extracted sample DNA.

以枳壳叶片为试验材料，分别采用改良CTAB法、CTAB-硅珠法、SDS法、高盐低pH值法和周世良法5种方法提取枳壳基因组DNA，并通过紫外分光光度计、琼脂糖凝胶电泳及SSR-PCR扩增3种方法对所提取的DNA样品进行检测。

E. The DNA four kind of azotic basic group proportion has the unusual regularity, in each kind of organism DNA A≈T C≈G adds the Cuff principle.

e。 DNA的四种含氮碱基比例具有奇特的规律性，每一种生物体DNA中 A≈T C≈G 加卡夫法则。

Methods The Chongqing duck hepatitis B virus model was treated with Bestain once a day for a month. DHBV DNA in serum was detected four times from the beginning to the end of the treatment, ALT and AST in serum and DHBV DNA in liver were detected simultaneously.

采用重庆麻鸭乙型肝炎动物模型，用乌苯美司治疗1月，检测用药前后血清中的DHBV DNA及血清ALT、肝组织中的DHBV DNA等。

Results Bestain could significantly lower the serum DHBV level. ALT and AST in serum were reduced during the treatment. Examination of DHBV DNA in liver with Southern Blot indicated Bestain could inhibit DHBV DNA replication.

结果 乌苯美司用药1月能使血清DHBV DNA总体水平显著降低；治疗期间同一时相内，能使血清ALT明显降低；Southern Blot检测肝组织内DHBV DNA，其结果提示该药能抑制病毒在肝内的复制。

First,the interaction between bipyridyl and In was investigated by the methods of electrochemistry,UV spectra and difference UV spectra.Then the interaction between In and DNA was investigated by the methods of electrochemistry.At last the electrochemistry behavior of interaction between In complex and DNA was studied.

本文选用联吡啶为配体，首先研究了In与联吡啶相互作用的电化学及紫外光谱性质，又对In与DNA的相互作用进行了初步研究，最后进一步研究了联吡啶In配合物与DNA作用的电化学行为。

The phylogenetic relationships of Calycanthaceae were investigated by means of molecular systematics, which was based on three DNA sequences from three genomes, including chloroplast DNA trnL-F, nuclear 18S ribosomal DNA, and mitochondrial matR gene.

本文选取来自于三个基因组—核基因组、线粒体基因组和叶绿体基因组的3个DNA序列片段，对蜡梅科的系统发育进行重建，主要探讨了蜡梅科的系统位置和属间系统演化关系。

Compared with fresh samples, dried with silica gel, the genomic DNA was extracted from Castanea henryi leaves, which preserved for 10 days, 2 months, 4 months, 6 months, 8 months, 10 months, 11 months, 12 months, 13 months, 14 months, 15 months, 16 months, 17 months, 18 months, by improved CTAB methods.

以野生锥栗幼叶为对照，采用硅胶干燥法，设置不同保存时间（10 d，2、4、6、8、10、11、12、13、14、15、16、17、18个月），对保存不同时间的锥栗叶样抽提基因组总DNA，利用紫外分光光度计及琼脂糖凝胶电泳检测提取DNA的浓度、纯度、得率及质量等指标，评价不同保存时间对基因组DNA的影响。

Genomic DNA was successfully extracted from fresh leaves of Toona ciliata var. pubescens using CTAB method. Microsatellite DNA was isolated from genomic DNA with improved method of streptavitin beads.

利用改良的链亲和素磁珠法亲和捕捉出毛红椿基因组微卫星DNA片断，并构建了富含微卫星的基因组文库。

The DNA fragmentation of contusive tissuein rat presented a ladder break in electrophoresis after 6 hours. Thedegree and length of DNA fragmentation changed with injury time butwithout linear relationship.

大鼠脑挫伤组织DNA片段化6h以后出现梯状谱带，DNA片段化程度和片段大小随损伤时间而变化，但无明显线性关系。

There were 2 peaks of starch accumulation in the process of somatic embryogenesis,the first time was at the stage of embryogenic callus,the second time was at the stage of globular embryoids;and a small raise appeared at the stage of torpedo-shaped embryoids,and the content of starch was slightly higher than those of heart-shaped embryoids and cotyledonary embryoids.With the development of embryos,the tendency of the changes of the content of DNA,RNA and the total nucleic acids was approximately similar,and the peak values were all at the stage of cotyledonary embryoids,and the change of the content of RNA was more remarkable than those of DNA and the total nucleic acids.The tendency of change of the content of proteins almost took on the S-shaped curve.

结果表明：龙眼胚性愈伤组织体胚发生过程中淀粉有2个累积峰值，第1次出现在胚性愈伤组织阶段，第2次出现在球形胚阶段，在鱼雷形胚阶段又有一个小回升，这时淀粉积累较心形胚和子叶形胚阶段高一些；随着胚胎的发育，DNA、RNA、总核酸含量的变化趋势大致相同，最高点均出现在心形胚阶段，其中RNA含量的变化较DNA、总核酸含量明显，蛋白质含量的变化曲线呈&S&形。

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。