细胞

BALB/c mice were immunized with plasmid TR421-hCGβ or mock DNA three times. Two weeks after immunization, spleen cells from the immunized mice were harvested, and then analyze the CTL activity against Sp2/0-ehCGβ cells. The splenocytes derived from the immunized mice were adoptively transferred to the normal mice, which were subsequently given injections i.

以TR421-hCGβ质粒实施基因免疫，免疫后检测小鼠脾细胞，特异性细胞毒活性；同期将脾细胞过继免疫给正常小鼠，以过继TR421-hCGβ质粒免疫小鼠脾细胞为实验组、过继TR421质粒免疫小鼠脾细胞为对照组，检测脾细胞杀伤效应。

Cytokine-induced killercells are a cluster of alloplasm cells,which are prepared from the mononuclear cells of human peripheral blood that might be stimulated by some kinds of cytokines.The proliferation and cytotoxicity of CIK cells are high,and the side effect is low.CIK cell is a more effective anti-tumor effector cell in adoptive immunotherapy.

细胞因子诱导的杀伤细胞是人外周血单个核细胞在体外经多种细胞因子刺激后获得的一群异质细胞，它具有增殖能力强、杀瘤活性高和杀瘤谱广、临床应用不良反应小的特点，是肿瘤过继免疫治疗中更为有效的杀瘤效应细胞。

Spores await dispersal and germinate in favourable conditions for amoeboid growth. However, the formation of stalk cells is a process of cell death.

在合适条件下，孢子细胞萌发开始新生命周期；而柄细胞无论用什么条件都不能萌发，因此柄细胞是死亡细胞，柄细胞的形成是细胞凋亡的过程。

The results shown that:(1) Bufo raddei Strauch tadpole was capable of lens regeneration, which originated from the epithelial cells at dorsal iris margin by depigmentation.(2) Depigmentation of Bufo raddei Strauch during lens regeneration was by two methods: First, pigment granules initially dispersed all over the cytoplasm were moved towards the periphery of the cell, and then were directly taken up by the amoeboid cells. Second, pigment granules in a cell were first crowded in a mass, surrounded by a membranous structure in the cytoplasm, which were eventually discharged as a mass from the cell.

结果表明：花背蟾蜍蝌蚪(1)具有晶状体再生的能力，其晶状体的再生来源于虹膜背缘的上皮细胞；(2)虹膜背缘去色素是转分化的前提，主要有两种方式：一种也是最主要的方式是在晶状体被摘除后虹膜外侧产生巨噬细胞，巨噬细胞吞噬虹膜色素上皮细胞中的色素颗粒；另一种方式是虹膜色素上皮细胞自身释放色素颗粒；(3)电镜观察发现虹膜色素上皮细胞转分化过程中线粒体有明显变化，核糖体增多，粗面内质网增多，晶状体纤维分化过程中细胞核逐渐凝聚。

This subset is hyporesponsive and anergic to antigen stimulation. Recently, it has been demonstrated to participate in the immune deficiency in human immunodeficiency virus infection and has close relationship with the development of acquired immunodeficiency syndrome. Meanwhile, the CD4(superscript +)D25(superscript +)Treg is also infected when the human body is invaded by HIV. The CD4(superscript +)CD25(superscript +)Treg will finally be killed by the mechanism of antibody-dependent cell-mediated cytotoxicity. Because of the decrease of the CD4(superscript +)CD25(superscript +)Treg, it can't function as a immune suppressor as a result of the excess of activation of HIV and gradually exhausting of the T cell, which shows that the CD4(superscript +)CD25(superscript +)Treg plays a inhibitory role in the different stages of the development of the HIV as well as different effects in the pathogenesis of AIDS.

它能够抑制自身免疫病的发生和发展，参与肿瘤免疫的调节，同时在感染和移植免疫中也发挥着极其重要的作用。T细胞的这一亚群具有免疫调节和免疫抑制的特性，新近发现它亦与爱滋病的发生、发展关系密切HIV进入人体后，CD4D25调节性T细胞抑制了机体的免疫效应但它也同时被感染，最终由于细胞毒的作用而死亡由于调节性T细胞数量的减少不能有效的发挥其抑制作用，HIV持续的过度活化使得T细胞逐渐耗竭说明在HIV发生、发展的不同阶段Treg细胞可能都发挥了免疫抑制作用，但是却对HIV感染与爱滋病发病的进程产生了不同的效应。

Aside from pancreatic enzymes activiation and autodigestive process, recent investigations have established that the upregulation of inflammatory mediator are believed to be the critical steps in the progression of mild pancreatitis to severe pancreatitis. Tumor necrosis factor-, ThyomboxaneA2 ,ProstaglandinsI2 are all important inflammatory mediator. TNF-( is one of cytokines. It is important to the over-production of ICAM-1,VCAM-1, TXA2 andPGI2. The ICAM-1 and VCAM-1 mediate both leukocytes adhesion and migration through the endothelium into tissues to connect with injuried target cells. The TXA2 and PGI2 are the production of arachidonic acid. They are responsible for the tissue ischaemia.

肿瘤坏死因子（Tumor necrosis factor-， TNF-、血栓素A2（ThyomboxaneA2，TXA2），前列环素（ProstaglandinsI2，PGI2）均是炎症反应中重要的炎性介质，其中肿瘤坏死因子-是非常重要的细胞因子之一，它由活化的单核细胞产生，在细胞间黏附分子（Intercellular adhesion molecule-1，ICAM-1）及血管细胞黏附分子(Vascular cell adhesion molecule-1，VCAM-1的表达、血栓素A2及前列环素过量生成方面起着重要的作用，前两者是介导白细胞与内皮细胞黏附，迁移于组织并与受损的靶细胞相结合的主要媒介，是炎症反应中的重要介质，后两者是花生四烯酸的代谢产物，亦是重要的炎性介质，参与构成血液循环障碍。

The results show that the duration of the 3 phases during the culture of cell suspension is related to the inoculum size, the initial nutrient concentration, the feeding of nutrients and the culture conditions such as temperature and dissolved oxygen, that the maximum cell yield reaches about 12g/L for batch culture or 35g/L for fed-batch culture in dry weight, that the saponin content of cells quickly increases in the bloom phase and keeps on increasing until the early stage of the declining phase, with a maximum saponin content of about 60~70g/kg in dry weight, that the conductance value of cell suspension decreases from more than 8000μS to less than 600μS with the growth of cells, but increases when the cells autolyze, and that part of cells turns red in the later culture, which has no apparent effect on the saponin content.

结果显示：细胞3个生长时期的持续时间与接种量、初始营养浓度、营养流加情况及培养条件有关；分批培养和流加培养时的最大细胞得率分别为12g/L和35g/L；细胞的皂甙含量在旺盛生长期快速上升，并保持增长至衰退期前期；干细胞中最大的皂甙含量达60~70g/kg；随着细胞的生长，培养液的电导值从8000μS以上下降至600μS以下，细胞自溶后逐渐回升。另外，培养后期部分细胞颜色变红，但没有发现颜色转变对皂甙含量造成影响。

From the outside to the inside , the body skin is divided into the stratum corneum , stratum lucidum , stratum granulosum , stratum spinosm and stratum basale , after through stratum corneum , stratum lucidum , stratum granulosum , stratum spinosm EGF can reach the stratum basale: accelerate the basal cells prpliferation and differentiation , reverse matured cells' differentiation to make stem cells that will form a " stem cells island " with a certain amount , which accelerate the generation of new cellls , make senescent cells keratinize and shed rapidly , make broken and denatured collagen fibers and elastic fibers repaired , so the skin's elasticity increase , and the wrinkles calm down or disappera gradually .

体表皮由外及里共分为角质层、透明层、颗粒层、棘细胞层、基底层，EGF可以通过透明层、颗粒层、棘细胞层深入肌肤基底层，加速基底层细胞增殖分化，将已经分化成熟的细胞逆分化成干细胞，当达到一定量时，便会形成&干细胞岛&，加速新细胞的生成，让衰老细胞快速角化、脱落，已断裂、变性的胶原纤维和弹性纤维得到修复，皮肤弹性增加，皱纹逐渐平复、消失。

The cells in the cambial layer of the periostlum showed low or negative signal in the immediate injury response period. The osteoblasts differentiated from the periosteum cells stained strongly in the intramembranous ossification period, and the differentiated chondrocytes stained most strongly in the chondrogenesis period.

结果 在急性损伤反应期，血肿延伸范围内的骨膜内层细胞有少量表达；在膜内成骨期，成骨细胞表达量较高，骨膜细胞表达量少；在软骨形成期，成熟软骨细胞表达量最高；在软骨内成骨期，肥大软骨细胞不表达，成骨细胞表达量较高。

Impact of PCL capsulation on the mesenchymal stem cell activity studied in vivo, one plate culture with complete culture medium for control group with and two encapsulated transplantation for experimental groups(complete culture medium or basic culture medium for cell suspended) installed,after package and transplantation,retrieving capsulated cells for cell count,MTT assay,CCK-8 assay Daily for 8days to determine cell activity,and analysis growth curve.

以完全培养液平皿法细胞培养为对照组，设2个实验组进行聚己内酯囊管化骨髓间充质干细胞移植细胞活性研究。两个实验组分别以完全培养液和基础培养液悬浮细胞后封装移植，囊管内细胞回收后以细胞计数、MTT法、CCK-8法测定细胞的活性，共8天，进行生长曲线分析。

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