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抗体应用

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Human Single-Chain Fv Fragments Specific for Natural Killer Cell Receptors from Phage Display Libraries

The exquisite specificity of monoclonal antibodies (MAbs) has made them extremely versatile tools for scientific, diagnostic, and therapeutic purposes. However, their production is time consuming and requires the immunization of animals and the subsequent use of rodent cells. Th ...

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Generation of Antibodies to Cell Surface Markers on Mature Natural Killer Cells

A limitation in the ability to analyze the function of the natural killer cell Ly49 and other receptors is the lack of antibodies to most of them. Even when monoclonal antibodies (MAbs) have been generated, they do not always react with a given receptor from all strains of mice. For example, 5E6 binds to Ly49C ...

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Multiple Color Immunofluorescence for Cytokine Detection at the Single Cell Level

Upon proper stimulation (e.g., crosslinking FcγRIIIA , interaction with antibody -nonsensitized target cells, cytokines), mature natural killer (NK) cells produce and release cytokines involved in the modulation of immune responses (reviewed in refs. 1,2), including interfer ...

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Techniques For Studying Murine Natural Killer Cells in Defense Against Viral Infection

Natural killer (NK) cells constitute an important frontline defense against a range of viruses including herpes viruses, human immunodeficiency virus type 1, and hepatitis viruses (1). NK cell deficiencies can lead to serious, life-threatening virus infections, with herpesvirus ...

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Fluorogenic Substrates as Detectors of Caspase Activity During Natural Killer Cell-Induced Apoptosis

Natural killer (NK) cells mediate target cell lysis by two independent pathways, one involving exocytosis of preformed granules (which contain perforin and granzymes A and B), the other requiring ligation of CD95 on target cells with CD95 (APO-1/Fas) ligand on the effector cell (1–3). Both proc ...

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Methods for Detecting Lytic Granules in Natural Killer Cells

Natural killer (NK) cells are able to identify and destroy target cells with absent or altered major histocomaptibility complex (MHC) class I, thereby mediating “natural cytotoxicity.” They also have the capacity to kill antibodycoated target cells by antibody-dependent cellular c ...

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Cloning and Culturing of Fetal Mouse Natural Killer Cells

The ability to study the properties and functions of individual cells is a major goal of cell biologists. Nowhere is this more true than in studies of the immune system, in which the complexity is such that results obtained at the population level often obscure critical aspects of the function and dive ...

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Methods of Analyzing Chromatin Changes Accompanying Apoptosis of Target Cells in Killer Cell Assays

Natural killer (NK) cells kill their targets by inducing two distinct modes of cell death—apoptosis and necrosis (1–4). The end result in both cases is target cell lysis, broadly defined as a loss of membrane integrity and most usually assessed by either chromium release or uptake of certain nonvit ...

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Assay for theTransendothelial Migration of Human Natural Killer Cells

The natural killer (NK) cell has been shown to be important in mounting a host’s initial response to many types of invaders, such as certain types of viruses, bacteria, and protozoa, and to be involved in the control of neoplastic growth and in allograft rejection (1,2). However, before any leukocyte can p ...

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Cloning Human Natural Killer Cells

Our understanding of the phenotypical and functional heterogeneity of human natural killer (NK) cells has greatly advanced over the past few years. This advancement has been greatly helped by the development of culture conditions for clonal proliferation of NK cells. Analysis of human NK ...

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抗体选择

随着生命科学的发展,围绕蛋白进行的研究越来越多,抗体试剂在实验中的重要性越来越举足轻重。面临着纷呈复杂的抗体试剂市场,如何选择到适合自己实验的抗体就变得尤为重要。 一、关于特异性的选择 特异性的选择主要需要考虑四个方面:蛋白特异性、种属特异性、实验方法特异性、标记物的特异性。 1、蛋白特异性: 针对需要检测的蛋白查找抗体,几个细节要区分,重组表达的蛋白和内源性蛋白的检 ...

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肿瘤研究“双子芯”

肿瘤标志物和信号通路的研究已经成为当前肿瘤研究的热点,但目前仍然缺少高效的研究工具。为此,上海华盈生物医药科技有限公司通过大量文献挖掘和潜心研制,开发出肿瘤标志物筛选抗体芯片和肿瘤信号通路磷酸化抗体芯片。产品于2013年9月第十六届全国临床肿瘤学大会上正式推出,为在肿瘤研究领域的科研工作者提供一种新的工具。 肿瘤标志物筛选抗体芯片&肿瘤信号通路磷酸化抗体芯片 ...

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抗磷脂酶A2受体抗体检测试剂——特发性膜性肾病特异性诊断指标

疾病简介 原发性膜性肾小球肾炎(MGN ,pMGN)也被称为特发性膜性肾病(IMN),是最常见的以肾病综合征为特点的肾脏疾病,可见于所有的种族和性别,更易出现在40岁以上的男性患者,怀疑患IMN的年轻女性,应考虑其是否患有狼疮肾炎。国内IMN发病率约占原发性肾小球疾病的9.9%~13.5%,居IgA肾病、系膜增生性肾小球肾炎之后,列第三位。随着蛋白尿的增加,IMN患者的肾衰竭发病率及死亡率风险也 ...

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如果金庸古龙琼瑶曹雪芹鲁迅村上春树安妮宝贝余秋雨郭敬明他们也做单抗。。。。

金庸版 但见超净台前是一对少年男女,男子容貌清俊,一身白衣胜雪;少女同是白衣紧身,身段好似嫩枝初发,不胜婀娜,面上笼了一层浅蓝色的柔纱,若隐若现,隐约看见琼鼻檀口,无法窥见全貌,乌黑的刘海下,双眼水波流动,仿佛对人言语。 “师妹!”少年男子开口道,“你这一式天山折梅手已越发纯熟了。” “师兄骗人,明明力量有余,巧劲不足, ...

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抗体

抗体的基本概念 抗体(antibody Ab): 机体免疫细胞被抗原激活后,由分化成熟的终末B细胞---浆细胞合成、分泌的一类能与相应抗原特异性结合的具有免疫功能的蛋白(存在于球蛋白的组分中/g-球蛋白)。 免疫球蛋白(immunoglobulin Ig): 具有抗体活性或化学结构与抗体分子相似的球蛋白。 免疫球蛋白的存在形式: 膜型(membrane immunoglobulin mIg) ...

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抗体保存指南

抗体保存得当与否,直接决定了抗体的活性和使用效果!如果抗体保存得当,大部分抗体活性都可以维持数月甚至数年。本指南以abcam 抗体保存方法为主,同样也可以应用到其他绝大部分公司的抗体产品! 请谨记!无论何时请按照说明书推荐的保存条件正确保存抗体! 1. 收到抗体后请务必在12 000 rpm 离心20-30 s 后再打开管盖进行分装和保存! 质优的抗体使用非常特殊的储 ...

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抗体选择指南

检测任何目的靶蛋白都有不止一种抗体可供选择,为缩小抗体的选择范围选中合适的抗体,需要考虑如下几种因素: 1. 分析或应用的类型 2. 样本蛋白的结构性质 3. 样本的种属 4. 抗体宿主的种类 5. 抗体的标记和检测 一、分析试验的应用类型 一般抗体说明书都列出该抗体经试验验证过适用于何种分析类型,如:可以应用于WB IHC ICC ELASA 分析等,如果抗体说明书没有提及的应用 ...

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抗体选择指南

一、抗体选择指南 检测任何目的靶蛋白都有不止一种抗体可供选择,为缩小抗体的选择范围选中合适的抗体,需要考虑如下几种因素: 1. 分析或应用的类型 2. 样本蛋白的结构性质 3. 样本的种属 4. 抗体宿主的种类 5. 抗体的标记和检测 1. 分析试验的应用类型 一般抗体说明书都列出该抗体经试验验证过适用于何种分析类型,如:可以应用于WB IHC ICC ELASA 分析 ...

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抗体和酶的4度保存

问:在elisa实验中,抗体要不断冻融,特容易失活,不知道有什么配方可以使抗体和酶在4度中长时间保存? 答1:抗体溶液忌讳反复冻融。当你获得一个较大包装的抗体后,一般要先将其分装,每次取一小支使用,可于4度短期保存。 答2: (1) 分装的时候每管容量不宜过少,管数不宜过多,因为管壁也会吸附部分抗体溶液。 (2) 不要用玻璃容器分装,因为会导致蛋白失活 (3) 千万不 ...

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抗体和重组蛋白的使用及保存方法

无论是保存还是运输,请避免反复冻融。反复冻融,冰晶会破坏抗体和重组蛋白的空间结构,导致蛋白变性形成多聚体和重组蛋白构象改变,从而降低抗体的结合能力,也加快了抗体球蛋白和重组蛋白的降解速度。抗体和重组蛋白保存得当与否,直接决定了抗体和重组蛋白的活性使用效果,如果保存得当,Immune tech的抗体和重组蛋白活性大部分都可以维持数年。 1. 收到抗体和重组蛋白后的操作 & ...

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