端细胞

Results: Wallerian degeneration was observed in the proximal and distal ends of all grafts of nerves harvested at 2 weeks post-engraftment; infiltration of T lymphocytes at the grafts in group B was significant, less T lymphocytes were seen in group C, D and E, while no T lymphocytes were seen in group A and F.

结果：术后2周，所有移植段近端，移植远端神经均有不同程度Wallerian变性，B组移植段见明显T淋巴细胞浸润，C，D，E组次之，A组及F组未见T淋巴细胞。B组以大量成纤维细胞增生为主，A，F组以SC增生为主，C，D，E组介于两者之间。

In this study, the DNA fragments coding for amino acids 133～158 of VP1and 20～34 of VP4protein of type Asial FMDV were chemically synthesized and ligated into a tandem repeat 133～158-20～34-133～158. The sequences of signal peptide of Igκ chain and Kozak were fused to the 5'end of this tandem sequence and synthetic oligodeoxynucleotide containing CpG-ISS was fused to downstream of terminal coden of this tandem sequence. And then this long fragment was cloned into the eukaryotic expression plasmid pHook-2, forming a new secreted expression plasmid, named pAS1-E.

在第二章证明了亚洲Ⅰ型口蹄疫病毒VP1蛋白中133～158位氨基酸残基确是一重要B细胞中和抗原表位的基础上，依据第一章获得的口蹄疫病毒亚洲Ⅰ型VP1 cDNA序列及已报道Asial VP4序列，采用真核偏爱密码子化学合成了VP1中编码133～158位氨基酸及VP4中编码20～34位氨基酸这两个抗原表位基因，将其组成133～158-20～34-133～158串联结构，在其5′端加上鼠Igκ链信号肽序列，在翻译调节区加上增强表达的Kozak序列，同时在133～158-20～34-133～158串联结构3'端终止密码子下游加上CpG免疫刺激序列，将这些片段连接后，克隆到真核表达载体pHook-2上，构建成功了DNA疫苗重组表达载体pAS1-E。

The vas deferens can be divided morphologically into four parts includi ng proximal, mid, distal vas deferens and ampullae. The basic structure of the w all is similar in different parts of vas deferens.

结果表明，中国对虾的输精管可分为近端、中间、远端输精管及壶腹4部分，输精管壁各部分的基本结构相似，但分泌细胞的结构有较大的差别。

AIM: To study the mechanism of cisplatin interaction with DNA, and the attenuating effects of 6,7-dimethoxycoumarin on crosslink .

目的：研究顺铂与肾近端小管DNA的作用机制，和茵陈素的干预作用，方法：原代培养兔肾近端小管细胞。

WD40 domain, found in a number of eukaryotic proteins that cover a wide variety of functions including adaptor/regulatory modules in signal transduction, pre-mRNA processing and cytoskeleton assembly; typically contains a GH dipeptide 11-24 residues from its N-terminus and the WD dipeptide at its C-terminus and is 40 residues long, hence the name WD40; between GH and WD lies a conserved core; serves as a stable propeller-like platform to which proteins can bind either stably or reversibly; forms a propeller-like structure with several blades where each blade is composed of a four-stranded anti-parallel b-sheet; instances with few detectable copies are hypothesized to form larger structures by dimerization; each WD40 sequence repeat forms the first three strands of one blade and the last strand in the next blade; the last C-terminal WD40 repeat completes the blade structure of the first WD40 repeat to create the closed ring propeller-structure; residues on the top and bottom surface of the propeller are proposed to coordinate interactions with other proteins and/or small ligands; 7 copies of the repeat are present in this alignment.

WD40域，在真核蛋白质的数量发现，涵盖了包括各种功能适配器/信号转导，mRNA前体细胞骨架组装加工和管理模式；通常包含一个从11月24日生长激素肽的N残留端和西部数据肽在其C端和40残留长，因而得名WD40；介于生长激素和WD一个保守的核心，作为一个稳定的螺旋桨式平台，可以绑定的蛋白可以稳定或可逆，形成了一个螺旋桨式与每个刀片是一个四叶片结构组成若干链反平行的β-片；与数份检测实例假设，形成了聚大结构，每个WD40重复序列形成了前三个一个刀片和绞线的最后在未来的刀片链，最后C -末端WD40重复完成了第一WD40重复叶片结构，创造螺旋桨的封闭环结构，对螺旋桨顶部和底部表面残留的建议，配合和其他蛋白质的相互作用/或小配体； 7重复副本，目前这条路。

WD40 domain, found in a number of eukaryotic proteins that cover a wide variety of functions including adaptor/regulatory modules in signal transduction, pre-mRNA processing and cytoskeleton assembly; typically contains a GH dipeptide 11-24 residues from its N-terminus and the WD dipeptide at its C-terminus and is 40 residues long, hence the name WD40; between GH and WD lies a conserved core; serves as a stable propeller-like platform to which proteins can bind either stably or reversibly; forms a propeller-like structure with several blades where each blade is composed of a four-stranded anti-parallel b-sheet; instances with few detectable copies are hypothesized to form larger structures by dimerization; each WD40 sequence repeat forms the first three strands of one blade and the last strand in the next blade; the last C-terminal WD40 repeat completes the blade structure of the first WD40 repeat to create the closed ring propeller-structure; residues on the top and bottom surface of the propeller are proposed to coordinate interactions with other proteins and/or small ligands; 7 copies of the repeat are present in this alignment.

WD40域，在真核蛋白质的数量发现，涵盖了包括各种功能适配器/信号转导，mRNA前体细胞骨架组装加工和管理模式；通常包含一个从11月24日生长激素肽的N残留端和西部数据肽在其C端和40残留长，因此得名WD40；之间的生长激素和WD是一个保守的核心，作为一个稳定的螺旋桨式平台，可以绑定的蛋白可以稳定或可逆性；形式与每个刀片是一个四叶片组成的几个类似结构的螺旋桨，搁浅反平行β-负债表；很少检测副本实例假设，形成了聚大结构，每个WD40重复序列形成了前三个链的一个刀片，并在未来的刀片上链，最后C -末端WD40重复完成了第一WD40重复叶片结构，创造螺旋桨的封闭环结构，对螺旋桨顶部和底部表面残留物，则建议协调与其他蛋白质和/或小配体； 7重复副本存在于相互作用这条路。

WD40 domain, found in a number of eukaryotic proteins that cover a wide variety of functions including adaptor/regulatory modules in signal transduction, pre-mRNA processing and cytoskeleton assembly; typically contains a GH dipeptide 11-24 residues from its N-terminus and the WD dipeptide at its C-terminus and is 40 residues long, hence the name WD40; between GH and WD lies a conserved core; serves as a stable propeller-like platform to which proteins can bind either stably or reversibly; forms a propeller-like structure with several blades where each blade is composed of a four-stranded anti-parallel b-sheet; instances with few detectable copies are hypothesized to form larger structures by dimerization; each WD40 sequence repeat forms the first three strands of one blade and the last strand in the next blade; the last C-terminal WD40 repeat completes the blade structure of the first WD40 repeat to create the closed ring propeller-structure; residues on the top and bottom surface of the propeller are propos

WD40域，在真核蛋白质的数量发现，涵盖了包括各种功能适配器/信号转导，mRNA前体细胞骨架组装加工和管理模式；通常包含一个从11月24日生长激素肽的N残留端和西部数据肽在其C端和40残留长，因而得名WD40；介于生长激素和WD一个保守的核心，作为一个稳定的螺旋桨式平台，可以绑定的蛋白可以稳定或可逆，形成了一个螺旋桨式与每个刀片是一个四叶片结构组成若干链反平行的β-片；与数份检测实例假设，形成了聚大结构，每个WD40重复序列形成了前三个一个刀片和绞线的最后在未来的刀片链，最后C -末端WD40重复完成了第一WD40重复叶片结构，创造螺旋桨的封闭环结构，对螺旋桨顶部和底部表面残留的建议，配合和其他蛋白质的相互作用/或小配体； 7重复副本，目前这条路。

C-banding analysis of satellites in 9 accessions of Ae.tauschii native to China was carried out with C-banded miotic interphases,prophases and metaphases,The results showed that the c-banded heterochromatin of satellites of Ae.tauschii did not change in size during the whole miotic stage and novariaton was observed among plants and cells within a accession,while polymorphism in c-banded satellites between different accessions was found.

5D染色体是节节麦整个染色体组中唯一的1对随体染色体，其随体位于5D短臂的末端。对来源于中国的9个不同的节节麦居群的吉姆萨C带分析表明：同一份节节麦居群内不同植株或不同细胞，这个端部随体在整个有丝分裂前期、中期和间期都很稳定，表现为大小、强弱一致的端部特征带。

In some human cancers telomere length measurement has proved to be of diagnostic and prognostic value.

细胞端粒重复序列的丢失与衰老和肿瘤的发生相关，在人体多种肿瘤的研究中，人们发现端粒长度的测定对诊断及预后判断具有重要价值。

In the absence of telomerase, the telomere will become shorter after each cell division.

在端粒酶的情况下，端粒缩短后，将成为每一个细胞分裂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。