蛋白核

At the same time, we simulate the interaction between DNA and a few histones.

同时，我们也模拟了DNA与多个组蛋白相互作用的结果，并且得到了核小体链。

Histones that come together to form the core of the nucleosome.

在一起形成核小体核心的组蛋白。

Histones are protein- found in eukaryotic cell nuclei, tightly bound to DNA, which has many phosphate groups.

组蛋白是存在于真核细胞核中的与含很多磷酸基团的DNA紧密结合的蛋白质。

In recent years,small G proteins have become an intensively studied group of regulatory GTP hydrolyses involved in cell signaling, which take part in numerous and diverse cellular processes, such as gene expression, cytoskeletal reorganization ,microtubule organization, and vesicular and nuclear transport, functioning as molecular switches.

另外，小G蛋白的调控途径近年来己经成为人们研究细胞信号转导过程的热点，它在基因表达、细胞骨架重组装、微管的形成以及囊泡和核孔的运输机制中，起着一个分子开关的作用。

Systemic levels of IL-6, IL-8 and TNF- a increase in patients with acute pancreatitis and correlate with the severity of the disease.A key regulator of cytokine induction is the pleiotropic transcription factor nuclear factor- K B.

核因子-κB(nuclear factor-kappa B，NF-κB)是由Rel蛋白家族成员形成的同源或异源二聚体，它几乎存在所有的细胞，不同的二聚体与不同的DNA序列结合，亲和力和转录激活能力是不一样的。

Moreover, in order to make clear whether IV infection touches off the cause and its pathogenesis of artherosclerosis inflammatory reaction. The study also uses IV of type A1 and A3 to infect repeatedly Jimpy mice with E gene defect, to observe AS histology change of Jimpy mice aorta and detect the change of IV antibody and inflammatory reaction medium (eg.TNF-α, IL-1) in Jimpy mice serum and express of monocyte chemotactic factor( MCF-1) and nuclear factor kB in Jimpy mice aorta tissue .

另外，为了弄清流感病毒感染是否是触发动脉粥样硬化炎症反应的发生原因及其机理，本研究还用A1、A3型流感病毒反复感染载脂蛋白E基因缺陷小鼠，观察小鼠主动脉的动脉粥样硬化组织学改变，并检测小鼠血清中流感病毒抗体、炎症反应介质（如TNF-a、IL-1等）变化情况以及小鼠主动脉组织中的单核细胞趋化因子-1（MCP-1）和核转录因子kB表达情况。

Methods Fifteen healthy, female SD rats were employed in the experiment. Sensitized systematically with keyhole limpet hemocyanin, the animals were inoculated with the same antigen through cochlea basal turn into the labyrinth. Adminstrated 5-bromo-2′-deoxyuridine intraperitoneally, the rats were sacrificed and the temporal bones were harvested at 3, 7,14 day after labyrinth vaccination respectively. The frozen sections of the decalcified samples were dealt with H-E staining and immunohistohemical methods to investigate the cellular infiltration, BrdUrd and IgG positive cells in the ES.

选用SD大鼠15只，以钥孔虫戚血蓝蛋白（keyhole limpet hemocyanin，KLH）全身免疫后，经耳蜗底回钻孔以相同抗原进行内耳免疫，然后分别在内耳免疫后3、7和14 d腹腔注射溴脱氧尿嘧啶核苷（bromodeoxyuridine，BrdUrd）后处死动物，取颞骨经组织学处理制作冰冻切片，用免疫组织化学技术观察内淋巴囊的细胞浸润、增殖和IgG细胞的分布状况。

The mitogen-activated protein kinases play an important role in a variety of biological processes.

丝裂原活化蛋白激酶信号转导途径是真核生物中普遍存在的信号转导机制之一，三级激酶级联反应是其通路的核心成份。

Polymerase chain reaction: Laboratory technique used to make numerous copies of specific DNA segments quickly AND accurately.

聚合链反应：能快速、准确复制新大量特定去氧核糖核酸实验室技术。每一个核体不仅含有 DNA ，而且含有五种组织蛋白中的四种。

For the purpose of constructing mammary gland specific expressional vector, we use the updream regulation sequence of bovine BLG to regulate lacS gene to express in mammary gland. Positive clone cells are selected and purified by the expression Neo gene and report gene EGFP. So the cells can be used as sources to create transgenic animals by nuclear transfer techniques.

本研究以牛β-乳球蛋白基因上游调控成分作为启动子，嗜热菌糖苷酶基因lacS为目的基因，构建了lacS基因乳腺特异表达载体，并通过脂质体介导法转染体外培养的牛胎儿成纤维细胞，借助新霉素抗性基因和增强型绿色荧光蛋白报告基因来筛选、纯化阳性克隆细胞，为利用核移植技术制备转基因动物提供细胞来源。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐