查询词典 mutagenesis

Safe use: not produce any organic chloride and other harmful substances that may lead to carcinogenesis, teratogenesis and mutagenesis, such as THMS and chloroform.

l 安全：不会产生"三致物质"的有机氯化物和三氯甲烷、氯仿等物质

When the NP concentration exceeds 0.025 mg/L, the stability of DNA strands in shellfish will be affected and there will be a risk of carcinogenesis, mutagenesis and teratogenesis. Human health will also be affected due to seafood consumption. On the other hand, the DNA damage level and migration length show some difference among shellfish, oyster and clam exposed to the same nonylphenol concentration. This is because different shellfish species have different immunity to NP.

数据分析结果同时表明，在相同浓度的壬基酚处理组中，扇贝、牡蛎和文蛤血淋巴细胞的破坏率和迁移长度存在种间差异，这可能是由于这三种贝类对NP的免疫程度不同所致，但关于海洋生物对外界干扰因素存在不同免疫力的具体机制以及它们之间的差别，目前国内外的研究还不多见，具体研究还有待进一步的开展。

If the genotype of pig was NN, there would be 2 bands appeared for that there was no mutagenesis from cytosine C to thymine T occurred.

如果猪的基因型为NN，由于未发生胞嘧啶C到胸腺嘧啶T的突变，可以看到2条带。

If the genotype of pig was nn, there would be only 1 band appeared for that there was mutagenesis from cytosine C to thymine T occurred.

如果猪的基因型为nn，由于发生了胞嘧啶C到胸腺嘧啶T的突变，只能看到l条带。

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。

In this paper hIL-3 mutants hIL-3K116V and hIL-3K116W with substitutions at residue 116 lysine respectively by valine and tryptophan were generated by site-directed mutagenesis.

本文通过定点突变的方法使IL-3的第116位的赖氨酸分别被缬氨酸和色氨酸取代，获得了hIL-3的突变体hIL-3K116V和hIL-3K116W。

In order to prevent linear PCV2 cyclization, PCR mutagenesis was used to construct the first molecular clone (pSK-2PCV2) by ligating two copies of the complete PCV2 genome with the pBluescript SK vector. In addition, pSK-PCV2 and ds-PCV2 were constructed. PK-15 cells were transfected with above three infectious clones.

本研究应用PCR诱变技术解决了外源片段易于自连的难题，成功将2个PCV2 SD1株全基因组(DQ346683)头尾相接插入到真核生物表达载体pSK的多克隆位点中，构建重组质粒pSK-2PCV2；另外课题组成功构建含单个PCV2全基因组的pSK-PCV2和自身环化质粒ds-PCV2。

The whole system is likely to make zebrafish the first vertebrate to achieve saturation mutagenesis and gene screen.

这套系统的建立使斑马鱼成为第一个有可能达到基因饱和突变和筛选的脊椎动物。

In order to obtain highly efficient H_2-producing aciduric anaerobic strain, a hydrogen producing strain H-8 was irradiated by microwave, the microwave mutagenesis parameters were optimized, and the genetic stability, hydrogen-producing potential and acid resistance of the mutant were investigated.

为获得厌氧产氢菌的高效突变株，以产氢菌H-8为原始菌株进行微波诱变处理，对微波诱变参数进行了优化，考察了突变株的遗传稳定性、产氢特性及耐酸性。

Enterobacter aerogenes was irradiated by He-Ne laser to optimize the laser mutagenesis condition, and to test the heredity, aciduric and hydrogen-producing potential of the mutant.

运用He-Ne激光辐照产气肠杆菌，对激光诱变参数进行优化，考察了突变株的遗传稳定性、耐酸性和产氢特性。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。