抗抗体

Fluorescein isothiocyanate labeled polyclonal goat antihuman immunoglobulin antibody was added, and flow cytometer was used to detect bead-platelet-associated autoantibodies-antihuman immunoglobulin antibody complex. Results The fluorescene ratio of four monoclonal antibodies was significantly different (P.01) between the idiopathic thrombocytopenic purpura patients and either the non-ITP patients or the normal controls. If the upper limit of normal control was set as cutoff value, ratios of greater than 1.37, 1.24, 1.48 and 1.19 were considered positive for the four monoclonal antibodies respectively. The flow cytometric bead assay had an overall sensitivity of 73.17% and a specificity of 94.29%. The overall sensitivity was significantly higher (P.05) than that of modified indirect MAIPA and that of using single antibody.

结果 特发性血小板减少性紫痕组4种羊抗荧光强度比值与非ITP血小板减少组和正常对照组有显著性差异(P.01)；若将ITP组患者4种羊抗荧光强度比值分别大于正常对照组上限1.37、1.24、1.48和1.19判断为阳性，则流式微球技术检测血小板特异性自身抗体的敏感性为73.2%，特异性为94.3%；4种羊抗联合检测总体敏感性明显高于改良间接单抗特异的血小板抗原固定试验(P.05)，且大于各单个抗体检测敏感性。

Fluorescein isothiocyanate labeled polyclonal goat antihuman immunoglobulin antibody was added, and flow cytometer was used to detect bead-platelet-associated autoantibodies-antihuman immunoglobulin antibody complex. Results The fluorescene ratio of four monoclonal antibodies was significantly different (P .01) between the idiopathic thrombocytopenic purpura patients and either the non-ITP patients or the normal controls. If the upper limit of normal control was set as cutoff value, ratios of greater than 1.37, 1.24, 1.48, and 1.19 were considered positive for the four monoclonal antibodies respectively. The flow cytometric bead assay had an overall sensitivity of 73.17% and a specificity of 94.29%.

结果 特发性血小板减少性紫癜组4种单抗荧光强度比值与非ITP血小板减少组和正常对照组有显著性差异（P＜0.01）；若将ITP组患者4种单抗荧光强度比值分别大于正常对照组上限1.37、1.24、1.48和1.19判断为阳性，则流式微球技术检测血小板特异性自身抗体的敏感性为73.17%，特异性为94.3%；4种单抗联合检测总体敏感性明显高于改良间接单抗特异的血小板抗原固定试验（P＜0.05，且大于各单个抗体检测敏感性。

The authors stress that they cannot prove whether antibodies against MOG and MBP have demyelinating capacity or whether they represent an epiphenomenon of myelin destruction.

作者强调，他们不能证明抗MOG和抗MBP抗体是否具有使髓鞘脱失的能力，或它们是否表示髓鞘受到破坏的现象，作者表示，抗MOG和抗MBP抗体的分析对于临床上出现分离症状的患者而言，是迅速、低廉，和精确的早期临床预测法，可以预测多重硬化症的发展，而这项研究结果对于咨询和推测发生第一次髓鞘脱失之患者是否患有多重硬化症，是相当重要的。

A double-antibody sandwich ELISAemploying monoclonal antibody 5G5 was developed for detection of P27 antigen of avian leucosis virus.The limit of viral antigens detected was 5?

利用原核表达的禽白血病病毒P27蛋白作为抗原制备的单抗作为包被抗体，以制的酶标兔抗P27作为酶标抗体，在国内首次建立了检测ALV抗原的双抗体夹心ELISA方法。

Phenotype analysis of transgenic mice Anti-IgM/anti-IgD antibodies, anti-IgM/anti-IgM〓/anti-IgM〓 antibodies were used to analyze allelic exclusion of transgenic mice B cells, and it was shown that 50%～80% B cells express transgene encoded IgM. ELISA was used to evaluate serum antikeratin IgM and total IgM of transgenic mice peripheral blood, and it is found that sera antikeratin IgM level of several lines of transgenic mice is significantly higher than littermate control. However, there is no difference in serum total IgM level between transgenic mice and non-transgenic mice.

三、抗体重链转基因小鼠表型分析以anti-IgM/anti-IgD抗体、anti-IgM/anti-IgM〓/anti-IgM〓抗体分析转基因小鼠B细胞等位基因排斥情况，发现50％～80％的B细胞表达转基因编码的IgM；ELISA分析转基因小鼠外周血中抗角蛋白IgM和总IgM水平，发现部分转基因小鼠的抗角蛋白IgM水平明显高于对照小鼠，而总IgM水平没有差异。

A sandwich ELISA was established taking the antiserum as the primary antibody. The sensitivity of the ELISA was 0.412 ng GH/ml of sample. Inter-assay and intro-assay coefficients of variation were 2. 58％(n=6) and 5. 69％(n=6) respectively. Serial dilutions of serum and pituitary homogenate from orange-spotted grouper yielded dose response curves that were parallel to the standard curve. And the GH of Acanthopagrus butcheri was also parallel to the standard curve. Prolactin of goldfish and recombinant growth hormone of common carp showed no cross-reactivity with the antiserum of orange-spotted grouper GH. It showed that the established RIA was specific and sensitive.

以斜带石斑鱼重组GH抗血清为第一抗体，羊抗兔抗体为第二抗体建立了双抗体夹心酶联免疫测定法，该系统的灵敏度为0.412ng GH／ml(n=6)，组内变异系数为2.58％(n=6)，组间变异系数为5.69％(n=6)，斜带石斑鱼血清和脑垂体稀释液曲线与斜带石斑鱼重组GH蛋白的标准曲线相平行、黑棘鲷GH的系列稀释曲线与标准曲线相平行，金鱼催乳素、重组鲤鱼GH的系列稀释曲线与标准曲线不平行，表明建立的斜带石斑鱼GH ELISA具有良好的特异性和重复性，灵敏度达到了测试血清样品中GH的水平。

The immunoglobulin like anti AChR antibody without complement binding activity is successfully made from a pathogenic anti AChR antibody IgG 637 by site directed mutagenesis.Key words:receptor, cholinergic;myasthenia gravis;point mutation;complement-binding;antibodies

本研究利用定点突变技术，从完型抗乙酰胆碱受体抗体IgG 637制备了不能激活补体的突变型抗乙酰胆碱受体抗体IgG 637/K 322 A，为最终制备出可用于治疗重症肌无力的无补体激活功能的单价抗乙酰胆碱受体抗体提供依据。

It is to use a high degree of specificity of the antibody immune response and chromatography analysis technology, marked by colloidal gold β-HCG and mouse monoclonal antibody IgG and fixed in the nitro-cellulose membrane of the anti-α-HCG and sheep anti-mouse antibody IgG Antibody, the specificity of detection in urine HCG.

是利用高度特异性的抗原抗体反应及免疫层析分析技术，通过胶体金标记的β-HCG单克隆抗体和鼠IgG以及固定于硝基纤维素膜上的抗α-HCG抗体及羊抗鼠IgG抗体，特异性的检测尿液中HCG。

The invention provides a human McAb to tetanus toxin, being a human antibody, which consists of an antibody variable region and an antibody constant region or not, having the ability of neutralizing the tetanus toxin, with the variable region gene and protein sequence indicated as the sequence table 1. The invention is characterized in that the antibody can not induce obvious allergic reaction, has higher titer and longer effect without any animal virus pollution, and can be produced in an unlimited quantity, which also provides the relating biological functions, the testing methods, the manufacturing method and the application.

A 本发明提供一种人源抗破伤风毒素单克隆抗体，其为人源抗体，包括抗体可变区，该抗体包括或不包括抗体的恒定区，该抗体具有中和破伤风毒素的能力，抗体可变区的基因和蛋白质序列如序列表1所示；其具有不会诱发明显的过敏反应，有较高的效价且长效，产品无动物病毒污染，可以无限量地生产；本发明还提供了其生物功能、测定方法、生产制造方法及其应用。

Western blots were performed to investigate the cross-reactivity of various labeled antibodies with serum proteins from other fish species. Results Immunoglobulins of five fish species were purified, including bighead carp, carp, argus snakehead fish, ricefield eel, sea bass. The titers of five rabbit anti-sera obtained up to 1:32 examined by agarose double immunodiffusion. Five kinds of purified rabbit anti-fish immunoglobulins antibodies were labeled with HRP and their activities were up to 1:10000 examined by EUSA. Four kinds of rabbit anti-fish immunoglobulins antibodies labeled with HRP could react with serum proteins from other fish species.

结果 纯化了鳙、鲤、乌鳢、黄鳝、鲈五种鱼血清免疫球蛋白，免疫双扩散法测定兔抗这五种鱼免疫球蛋白的抗血清效价均达到1：32，并对纯化的兔抗鳙、鲤、乌鳢、黄鳝、鲈五种鱼类免疫球蛋白的抗体进行了HRP标记，ELISA测定标记抗体的效价达到1：10000左右，Western blots显示标记抗体与部分其他鱼类免疫球蛋白之间存在不同程度的交叉反应。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。