试剂盒名称:小鼠抑瘤素M OSMELISA
Pig Tumor Necrosis Factor Ligand Superfamily, Member 13 (TNFSF13) ELISA
规格: 96T/48T
品牌:BIOFINE
种属:人ELISA试剂盒
检测波长:450nm
所需样本体积: 50-100ul
适用范围:仅供科研
保存及有效期:2-8℃，六个月，-20℃一年
检测目的:用于测定血清，血浆及相关液体小鼠抑瘤素M OSM含量。适合检测包括血清、血浆、尿液、胸腹水、灌洗液、脑脊液、细胞培养上清、组织匀浆等标本。
Enzyme-linked immunosorbent assay (ELISA), also known as an enzyme immunoassay (EIA), is a biochemical technique used mainly in immunology to detect the presence of an antibody or an antigen in a sample. The ELISA has been used as a diagnostic tool in medicine and plant pathology, as well as a quality-control check in various industries. In simple terms, in ELISA, an unknown amount of antigen is affixed to a surface, and then a specific antibody is applied over the surface so that it can bind to the antigen. This antibody is linked to an enzyme, and in the final step a substance is added that the enzyme can convert to some detectable signal, most commonly a colour change in a chemical substrate. Performing an ELISA involves at least one antibody with specificity for a particular antigen. The sample with an unknown amount of antigen is immobilized on a solid support (usually a polystyrene microtiter plate) either non-specifically (via adsorption to the surface) or specifically (via capture by another antibody specific to the same antigen, in a "sandwich" ELISA). After the antigen is immobilized, the detection antibody is added, forming a complex with the antigen. The detection antibody can be covalently linked to an enzyme, or can itself be detected by a secondary antibody that is linked to an enzyme through bioconjugation. Between each step, the plate is typically washed with a mild detergent solution to remove any proteins or antibodies that are not specifically bound. After the final wash step, the plate is developed by adding an enzymatic substrate to produce a visible signal, which indicates the quantity of antigen in the sample. Traditional ELISA typically involves chromogenic reporters and substrates that produce some kind of observable color change to indicate the presence of antigen or analyte. Newer ELISA-like techniques utilize fluorogenic, electrochemiluminescent, and real-time PCR reporters to create quantifiable signals. These new reporters can have various advantages including higher sensitivities and multiplexing.[1][2] In technical terms, newer assays of this type are not strictly ELISAs, as they are not "enzyme-linked" but are instead linked to some non-enzymatic reporter. However, given that the general principles in these assays are largely similar, they are often grouped in the same category as ELISAs.
小鼠抑瘤素M OSM重链和轻链的N端的氨基酸排列顺序因各种抗体而异，称为可变区，分别用VH和VL表示。两者构成抗体的抗原结合部位，只与相应的抗原决定簇匹配，发生特异性结合（见图），是抗体专一性结合抗原的结构基础。 IgG可被木瓜蛋白酶分解为三个区段，其中两个相同的区段称抗原结合片段（Fab）。每个Fab都保存结合抗原的能力，但只有一个抗原结合位点，是单价的，与抗原结合后不出现凝集或沉淀。另一区段称Fc段，无抗体活性，但具有IgG*的抗原性。 IgG可被*分解为两个片段，一个Fab双体，称F（ab'）2，能和两个相同的抗原结合
小鼠抑瘤素M OSMELISA
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