基因的

To improve the efficiency and application, pollen tube growth of different Brassica species is observed and factors of transformation are studied for optimization.

继而通过比较不同白菜型油菜、甘蓝和甘蓝型油菜品种的花粉管生长规律和转化率，得到表达报告基因的除草剂抗性植株，实现了不同类型和基因型油菜的高效转化，扩展了方法的应用范围。

The baculovirus expression system, utilizing the strong polyhedrin gene promoter of the Autographa californica nuclear polyhedrosis virus , has become an important tool for protein production in the field of molecular biology.

由于核型多角体杆状病毒的多角体蛋白不是病毒复制必需的蛋白，利用转录多角体蛋白基因的强启动子可以高效表达外源蛋白，包括原核和真核基因编码的蛋白。

The article may provide reference to teachers and students in the teaching and learning of population genetics.

目前国内关于群体遗传学的介绍多是关于一对基因的遗传平衡[1] ，而关于两个基因座的连锁平衡介绍的较少[2 ] 。

P. infestans ranks highest in the evolutionary potential and it can easily mutate its Avr genes and thus overccome the only promising solution for late blight control is potato plants carrying corresponding R genes.

致病疫霉菌是一种进化潜力非常高的病原，可以快速突变本身的非毒力基因，因而造成对应的马铃薯抗病基因的失效。

Current, carry the research of pair of former cancer gene and curb cancer gene, will clarify mechanism of the happening of tumour of flesh and blood, move and judgement are prognostic, find out the biologic target that tumour of flesh and blood treats to nod then, praepostor content target to the heat that treating is clinical research all the time.

目前，通过对原癌基因和抑癌基因的探究，来阐明骨肉瘤的发生、转移机制以及判定预后，进而找出骨肉瘤治疗的生物学靶点，指导生物靶向治疗一直是临床探究的热点。

In the uterus on day 5 of pseudopregnancy or under delayed implantation,the expression signal of CD63 was hardly to be detected,but there was a specific expression after the activation of delayed implantation.

在假孕和延迟着床的子宫中，检测不到CD63基因的表达，而在延迟激活子宫的着床位点，CD63基因的表达特异性增强，其表达模式与正常妊娠第5天着床位点处类似。

For targeted and regulable gene transcription, tissue or tumor specific promoters and some manual regulatory systems are used to regulate therapeutic gene expression.

为了实现基因的靶向可调控表达，组织或肿瘤特异性的启动子和人工合成的可调控表达系统被用来调控治疗基因的表达。

The shorter 5′UTR was functional at ring stage, while the longer one prompted transcription at trophozoite and schizont stage. The functional role of poly tracts in stage-specific regulation of GBP130 remains unclear.

推测不同GBP130启动子活性强度的差异是因为 5′UTR长度的不同，较长的UTR可促进基因的转录表达，可能GBP130基因近端侧翼序列中 2个同聚 po

Mitochondrial DNA extraction, long-PCR amplification and primer-walking sequencing methods were carried out for determining the complete mt DNA sequence of Scolopendra multilan.(1) The complete mitochondrial genome of Scolopendra multilan is 13,734 bp in size.

采用长片断扩增和PCR引物步移测序等方法，补齐少棘蜈蚣线粒体基因组全序列，主要结果如下：（1）序列全长为13，734 bp，其基因组成和顺序、基因的方向即编码链的选择、碱基G的低含量和对碱基A偏好以及GC和AT偏斜与已知的多足动物线粒体基因组相同。

Objective To observe the influence of gene transfection of inducible nitric oxide synthase to the transplanted human laryngeal squamous carcinoma in nude mice, to investigate the expression and the correlayion of iNOS and p53, and to proke into the possible apoptosis mechanism. Methods Transfect the gene of iNOS to Hep-2 human laryngeal cancer cell, sieve out positive clone cell and amplify.

目的 观察诱生型一氧化氮合酶(inducible nitric oxide synthase， iNOS)基因转染对人喉鳞癌细胞裸鼠移植瘤生长的影响，研究在体人喉鳞癌细胞中iNOS与突变型p53基因的表达，探讨二者的相关性及促进肿瘤细胞凋亡的机制。

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。