查询词典 mutation

Conventional mutation-inducing methods are often limited by explant availability and require lots of time and space.

传统诱导突变的方法应用于果树作物，常受限于外植体来源，并且耗费大量的时间及场地。

Most risk factors appear in 2cm to tumor in stage Ⅰ and Ⅱ breast cancer patients,so we recommend 2cm to tumor as the safe exsection standard.The range of exsection should be expanded（＞2cm） when there were P53 mutation,the expression of C-erB-2 expanded and EIC.

Ⅰ、Ⅱ期乳腺癌保乳术后复发危险因素绝大多数（95.2%）在瘤缘外2cm以内存在，因此推荐以癌旁2cm作为保乳手术的安全切除范围，远离乳头端可缩小手术范围至癌旁1cm处；原发癌C-erbB-2扩增和P53突变时，行保乳手术应适当扩大切除范围（＞2cm）；EIC时，应扩大手术范围。

Objective To observe the relationship between P53 gene mutation and malignant eyelid tumor.

目的 探讨P53基因突变与眼睑恶性肿瘤发生的关系。

The theory and the implementation of the genetic algorithms are discussed in detail. The question on how to choose the crossover probability, the mutation probability, the scale of population and the numbers of the generation is discussed. Then, the mathematics model of the optimal design is established. Exerting the finite element of elastic base beam and using FORTRAN to write the GAFORTRAN program. The program includes the common genetic algorithms and the modified genetic algorithms.

详细介绍了遗传算法的理论和实现技术，探讨了交叉概率、变异概率、群体规模、进化代数等变量的选取问题，建立起了基于遗传算法的深基坑支护结构设计的优化模型，结合弹性地基梁有限元法，利用FORTRAN语言编制了GAFORTRAN优化程序，程序中包括普通遗传算法和改进遗传算法。

FIP is caused by a mutation of the corona virus.

国际制药联合会，是由一种变异的冠状病毒。

In order to study the potential mutation genesis of compound flavine, we have performed Ames tests, rat marrow osteocyte micronuclear tests and rat sperm deformation tests.

目的 为了研究复方生物黄酮的潜在致突变性。方法我们对该产品进行了Ames实验、小鼠骨髓细胞微核实验和小鼠精子畸形实验。

Most cases of FOP arise as a result of a spontaneous new mutation, and so this is very likely to be your sister's case since you do not repeort anyone else in your family that has FOP.

FOP大多数病例往往会发展成一个新的自发突变的结果，所以这很可能是你妹妹的情况(对不起，我在这里向Robert博士介绍说Tingting是我的妹妹)，因为你没有告知你家里其他人FOP的状况。

Four groups of oligonucleotides were successively cloned in pMD18-T vector to obtain four large fragments. Ligation of these four fragments resulted in a cloned DNA MgE717 coding for the 29～268 amino acid region of gE. Sequencing result showed that there is a mutation at 255 amino acid, Asn instead of Asp.

分四段分别合成，基因拼接得到了改造后的基因片段MgE717，经测序，除了在gE基因+763位核苷酸处存在一碱基置换，导致第255位的氨基酸残基由Asp突变为Asn，其余的序列与PrV鄂A株gE基因的氨基酸序列相符。

RESULTS suc2 gene fragment of about 1.5 kb was amplified and cloned. DNA sequencing confirmed that , compared with the published sequence, the cloned suc2 gene had correct sequ ence except for one point mutation, but that did not alter the amino acid sequence o f t he encoded peptide. By transformation of yeast cells with a constructed gene dis ruption vector, four yeast clones were obtained which showed correct auxotrophy. PCR and DNA sequencing indicated that these yeast clones had the expected genot ype.

结果用 PCR从酵母基因组DNA中扩增出大小约1.5 kb的suc2基因片段，序列测定表明除585位有一点突变外，所得suc2基因与文献报道相同，构建的定位突变载体导入酵母细胞后，得到4株营养型符合的突变体，PCR表明这些突变体中均有suc2基因的同源重组，取其中1株的PCR产物进行序列测定证实了同源重组的发生。

Use image to go place of mutation of the sum of value resembling element goes for fraise hemline characteristic, undertake detecting to the obstacle, the course gets car barrier after symmetry test and verify, extract car obstacle pattern plate.

利用图像行像素值之和突变所在行为障碍物底边的特征，对障碍进行检测，经过对称性验证后得到车辆障碍，提取车辆障碍模板。

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。