查询词典 DNA

Focusing on studies of DNA adduct in Europe and America, the paper reviews the main analytical techniques of DNA adduct.

DNA加合物研究已经成为分子遗传毒理学的热点研究领域之一，倍受环境、医学和生态毒理学家们的重视。

The above results proved that atrazine could be inserted into the double-helix of DNA and formed a stable DNA adduct.

以上实验结果表明，莠去津平面分子能够嵌插到DNA双螺旋链中，形成较稳定的加合物。

This reflects that certain gene alteration may be linked the individual difference in DNA adduct levels of lung cancer patients.

为了解这五种DNA修补基因和肺癌之相关性，以RT-PCR分析100位肺癌患者之非肿瘤组织与肿瘤组织，以及50位非癌症病患之正常肺组织之DNA修补基因的表现。

Using high performance liquid chromatography and liquid scintillation counting , we investigated the proportion of incorporation to adduction for formic acid and DNA.

我们采用高效液相色谱法与液体闪烁计数法相结合，研究了在小鼠体内，甲酸与DNA大分子结合的动力学曲线，并且探讨了甲酸与DNA的掺入与加合的比例的变化。

In order to search for a suitable method for the tissue preservation and DNA isolation of marine animals, the adductor muscle of bay scallop was treated with different methods: frozen at -20 ℃, fixed with 70% ethanol and 10% formaldehyde more than 10 days.

以海湾扇贝为材料，研究了鲜活样品以及采用冷冻保存、70 %乙醇固定和10 %福尔马林固定等方法保存的闭壳肌样品用于DNA提取的不同效果，并分析了不同保存条件下所提得DNA用于RAPD扩增的结果。

The full-length DNA-A molecules from ageratum sample G8 and G10 were cloned and sequenced. Sequence analyses and comparisons showed DNA-A of G8 and G10 shared 93.2% identity to each other, So G8 and G10 were isolates of a same begomovirus.

从胜红蓟样本G8和G10中克隆并测定了两个DNA-A全序列，序列比较分析发现，G8和G10之间的同源性达到93.2％，认为是同一病毒的不同分离物。

Partial DNA-A sequence comparison with other geminiviruses showed that G7 were infected with 5 begomoviruses, these viruses were Papaya leaf curl China virus, Ageratum yellow vein china virus, Tomato leaf curl China virus, Euphorbia leaf curl virus and Tobacco leaf curl Yunnan virus.

得到部分G7的DNA一A序列，经NCBI检索和序列比较分析发现了5种菜豆金色叶病毒属病毒的部分DNA序列，分别是中国番木瓜曲叶病毒、中国胜红蓟黄脉病毒、中国番茄曲叶病毒、一品红曲叶病毒、云南烟草曲叶病毒。

Genetic analysis were carried out to identify powdery mildew and strip rust resistance genes in the F2 of Am6-4 amphiploid and wheat variety Jinan17. Results showed that resistances to powdery mildew and stripe rust were controlled by a single dominant gene respectively. 124 SSR primers from genome D were used for marker analysis, marker Xgwm98 150(150为下标) from the chromosome 6D was found to be linked to the new powdery mildew resistance gene with a linkage distance 20.42 cM; A special DNA band was amplified by primere xgwm33 in resistant stripe rust plants, resistance gene for stripe rust was localized on chromosome 1D, and the genetic distance between resistance gene and marker is 8.0 cM.

利用Am6-4与济南17F2分离群体进行白粉病和条锈病抗性基因的遗传分析结果证明，Am6-4中的抗白粉病和抗条锈病基因均为单显性基因；以124对D基因组SSR引物进行标记分析，引物Xgwm98在抗白粉病DNA池和单株中能扩增出特异标记带，标记与抗白粉病基因间的遗传距离为20.42cM，并将抗白粉病基因定位于6D染色体；引物Xgwm33能在抗条锈病DNA池和单株中扩增出特异标记带，标记与抗条锈病基因间的遗传距离为8.0cM，并将抗条锈病基因定位于1D染色体。

Cloning of the Schwanniomyces occidentalis α-amylase and high expression in S.cerevisiae.The E.coli / yeast shuttle plasmid YCEpl partial library of Schwanniomyces occidentalis DNA was constructed and α-amylase gene fragments were screened in Saccharomyces cerevisiae by amylolytic activity.Several transformants with amylolysis were obtained and one of the fusion plasmids has about 5.0 kb inserted DNA fragment.It contains the upstream and downstream sequences of α-amylase gene from S.occidentalis .

以E.coli/yeast穿梭质粒YCEp1为载体构建西方许旺酵母部分基因组文库，在大肠杆菌中扩增后提取混合质粒DNA，经电转化非缺陷标志酒精酵母 AS.2.1364，在YPDS平板(含1%葡萄糖和1%可溶性淀粉)上用淀粉水解活力筛选含水解淀粉的阳性转化子，从阳性转化子中分离重组质粒证实含5.0kb的插入片段，用α-淀粉酶基因两端序列设计的引物PCR扩增及扩增片段序列分析证实该片段中含有α-淀粉酶全部编码序列。

Objective To evaluate the clinical significance of the detection of DNA aneuploid and telomerase activity in the diagnosis and differential diagnosis of malignant pleural effusion.

目的 了解不同类型胸腔积液表达DNA异倍体和端粒酶活性的差异，探讨DNA异倍体和TA诊断与鉴别诊断恶性胸腔积液的价值。

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。