查询词典 DNA

Our previous reports indicated that DNA adduct levels of lung cancer patients were significantly higher than those of non-cancer controls.

因此推测DNA修补基因的表现，可能会影响肺癌患者DNA键结物的含量。

To search for DNA-based sex identification candidate marker of poultry, whole blood DNAs from each five males and five females of Native Chicken, Brown Tsaiya, Muscovy, White Roman Goose, Bronze Turkey, Australian Black Swan, Quail and Ring-necked Pheasant were analyzed by spindlin gene. PCR products were amplified by SPIN12 and SPIN13 primer kits. Different electrophoresis patterns showed correct gender for each bird species. The accuracy of sex identification was 100%. Furthermore, the PCR DNA fragments of the same gender were different among bird species.

以土鸡、褐色菜鸭、番鸭、白罗曼鹅、青铜火鸡、澳洲黑天鹅、鹌鹑、环颈雉各5公5母个体 DNA作为模版，应用SPIN12及SPIN13引子组进行聚合酶连锁反应后，由电泳分析结果显示所有受检物种之雄性与雌性均呈现不同样态，且与实际性别吻合，证实此引子组可成功鉴别鸡、鸭、番鸭、鹅、火鸡之性别外，亦可作为黑天鹅、鹌鹑、环颈雉等鸟类的性别遗传标记，从不同物种所呈现的DNA片段亦有变异存在。

Some DNA is ring-like, some DNA is linear.

有的DNA为环形，有的DNA为线形。

A form of DNA damage in which two adjacent pyrimidines in a DNA strand become covalently bound to each other.

一种DNA损伤形式，其中DNA链上两个相邻的嘧啶被共价连接到了一起。

In molecular biochemistry, the volume of DNA sample is very smalland DNA sample is liable to be contaminated and degraded.

采用稀释样品的方法可提高DNA样品的使用效率。采用羟乙基纤维素无胶筛分介质分离了DNA片段。

Most mammalian cells contain multiple species of DNA dependent DNA polymerases.

大部分哺乳动物细胞均含有多种依赖DNA的DNA聚合酶。

Pfu DNA polymerase, having 3"-5" exonuclease activity, is one of the DNA polymerases that have the highest fidelity.

Pfu DNA酶具有3'-5'外切酶活性，是保真度最高的DNA聚合酶之一。

The Raman spectral bands indicated that the damage of the heating on the DNA conformation is limited below the melting point. The damage of the DNA molecular structure increased with a rise in temperature above the melting point. The damage was first obversed in adenine and deoxyribose.

研究结果表明，在熔融温度以下热处理对DNA构象的影响是轻微的，在熔融温度以上则随温度的升高，对DNA分子结构的影响及破坏也逐渐加剧，首先受影响的是腺嘌呤和脱氧核糖。

After experiments, we got some results as the following:1.Induced by semi-conductor laser, solid DNA changes as below: 1the deoxyribose-phosphate backbone vibrations in DNA decreasing, these bands are at 884~890cm~(-1),1112cm~(-1) and 1168cm~(-1). 2 deoxyribose and C-O stretch vibration in d increasing, there are new bands occurring at 1436cm~(-1) and 1072cm~(-1), the intensities of these bands at 1466cm~(-1) and 1030cm~(-1) increase.

通过实验研究，得到如下一些结论： 1、固体DNA经半导体激光器照射后，可以导致以下变化：(1)DNA中脱氧核糖磷酸主链振动减弱，包括在884～890cm~(-1)、1112cm~(-1)和1168cm~(-1)处的谱带；(2)脱氧核糖以及d中CO的伸缩振动增强，在1436cm~(-1)和1072cm~(-1)处出现了新的谱带，在1466cm~(-1)和1030cm~(-1)处的谱带强度增强；(3)各碱基的振动频率和相对强度都发生了很大的变化，碱基中羰基的伸缩振动显著增强，在1650cm~(-1)和1670cm~(-1)处出现了新的谱带，在1710cm~(-1)处的谱带强度显著增强。

A fast, simple and convenient method is established to isolate and characterize the cpDNA in leaves of Quercus variabilis. The protocol includes: chloplast isolation, deoxyribonuclease treatment, deproteinisation and purification of the DNA.

通过对以往的叶绿体DNA提取方法进行比较研究，建立了一个快速、简便提取栓皮栎叶绿体DNA的方法，其主要步骤包括叶绿体分离、DNA酶处理、去蛋白和纯化。

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。