二基因的

Because the dimeric form is the active form to exert its biological activities, many trials failed to express TGF β s in prokaryotic systems because of their complex folding manner and disulfide patterns. In 1991 Cerletti and coworkers from Ciba-Geigy Corporation in Switzerland successfully finished the functional expression of human TGF β 2 in bacteria, but the details are protected by the patent.

由于双体是其发挥生物活性的形式，TGF β复杂的折叠方式和二硫键配对使其早期原核基因工程研究都以失败而告终。1991年，瑞士Ciba-Geigy公司的Cerletti等成功完成了人TGFβ2基因的细菌表达，但其技术细节被专利加以保护。

The DNAs that we isolated from all samples had high molecular weight and by PCR the dimorphism of ALU alleles of the 8th intron of t-PA was easy to be obtained, so they were complete and reliable.

所有样本的DNA分子质量都很高，从两者的DNA样本中能很容易地扩增出t-PA基因的第8内含子区ALU等位基因二态性，因此所提取的DNA是完整可靠的。

Combined with animal model of peradaptation to myocardium ischemia , the research observed the level of enzymatic dynamics of myocardium, SOD,MDA,ET and correlation peptide of calcitonin gene in peripheral blood and cardiac function, apoptic cell and expression of apoptosis regulatory gene, ultrastructure of myocardium with BIOPAC16, in situ end labeling and hybridism, optic microscope and electron microscope. The study of animal model of peradaptation to myocardium ischemia illustrated that the peradaptation and pretreatment with Wenxin capsule could be positively protective for the injury of ischemia reperfusion. The protection is mainly reflected by reduction of infarction area, correction of heart rhythm abnormality of ischemia reperfusion, melioration of the contraction and relaxation function of myocardium, recovery of the subcellular structure and themelioration of the abnormality of biochemical and bioactive substance in the myocardium.

并结合心肌缺血预适应动物模型，采用BIOPAC16导生理记录和分析处理系统处理心肌功能指标，采用原位末端标记及原位杂交技术标记凋亡细胞及凋亡相关调控基因的表达，采用光电镜技术观察心肌超微结构的变化，同时观察外周血心肌酶、超氧化物歧化酶、丙二醛、内皮素、降钙素基因相关肽等水平，结果表明心肌缺血预适应及温心胶囊预处理对心肌缺血再灌注损伤具有肯定的保护作用，其保护心脏作用主要表现在缩小心肌梗死范围、抗缺血再灌注心律失常、改善心肌收缩和舒张功能、减轻心肌超微结构损伤，调节心肌生化物质及生物活性物质的生成和释放。

Two spotted spider mite feeding induced octadecanoid signaling pathway that resulted in activation of PⅠ-Ⅱ gene and expression of relative genes, further more PⅠ-Ⅱ protein were accumulated.

二点叶螨对番茄植株的捕食激活了脂肪酸途径，导致PI-Ⅱ基因的激活，从而诱导PI-Ⅱ蛋白的积累及相关基因的表达。

Compared the lignin and cellulose level of these two kinds of transgenic tobacco, we found that the cellulose content increased and the lignin content deduced in transgenic tobacco transformed with Amorpha fruticosa UGPA constructs, both the cellulose content and the lignin content increased in transgenic tobacco transformed with Acetobacter xylinum UGPA constructs.

结果表明，两种转基因烟草的尿苷二磷酸葡萄糖焦磷酸化酶的活性均有明显提高；转紫穗槐UGPA基因的烟草纤维素含量有所提高，木质素含量略有降低，纤维素与木质素含量之大连理工大学博士学位论文比提高；而转木醋酸菌来源的UGPase基因的烟草木质素含量和纤维素含量均显著提高。

Another Amorpha fruticosa cDNA clone encoding 4-coumarate:CoA ligase (4CL), a key enzyme of phenylpropanoid metabolism related to lignin forming, was cloned ,too.A full-length UGPase cDNA was obtained.

所获得的紫穗槐尿苷二磷酸葡萄糖焦磷酸化酶基因UGPA长1832bp，其中开放阅读框1416bp，编码471个氨基酸，与其它植物的UGPase基因的序列相比有较高的同源性。

The cloned Buchnera groEL genes of Schizaphis graminum and Rhopalosiphum maize were ligated into pBV221,pET30a and pTrcHisA expression vector for construction of pBVRM,pBVSG, pETRM,pETSGPR,pTrcRM and pTrcSG. They were transformated into E. coli BL21(DE3),DH5a and JM109 for studying their expression.

2将克隆的玉米蚜和麦二叉蚜Buchnera groEL基因连接到原核表达载体pBV221、pET30a和pTrcHisA上，构建了含2个目的基因的6个表达原核表达载体：pBVRM、pBVSG，pETRM、pETSG和pTrcRM、pTrcSG。

RESULTS: The findings show that 17beta-estradiol, progesterone, or both hormones administered together significantly influenced the expression of numerous genes in the mouse meibomian gland.

结果：检查所见显示在小鼠睑板腺中，17beta-雌二醇、黄体酮或17beta-雌二醇联合黄体酮注射对于很多基因的表达都有显著影响。

He merle gene is very common, and very popular, in the Australian Shepherd breed (they are sometimes called "those little blue dogs");,it is relatively common among Collies and Shelties as well.

产生双merle的唯一途径就是二只陨石繁殖。其结果，统计学上四分之一的宝宝为正常色，二分之一为携带单merle的陨石，另四分之一就是双merle基因的宝宝。澳牧中merle基因就广泛地存在，在边境和小喜也较常见。

It was found that one of the fragments was similar to the Peroxidase gene located on the rice chromosome 1 completely, another fragment was partially similar to the protein Phosphorylase gene located on the rice chromosome 12 with 99.99% homology.

同源性均在99％以上。其中一个与位于水稻第一号染色体的过氧化物酶基因的部分片段有100％相似性。另一个与位于第十二号染色体上的蛋白磷酸化酶基因有99.99％的同源性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。