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Overview

  • Product nameCD21 Human ELISA KitSee all CD21 kits ...
  • Detection methodColorimetric
  • Precision
    Intra-assay
    Sample n Mean SD CV%
    Sample A 8 50.25U/ml 2.24 4.45%
    Sample B 8 10.44U/ml 0.46 4.4%
    Inter-assay
    Sample n Mean SD CV%
    Sample A 8 51.13U/ml 2.29 4.47%
    Sample B 8 10.76U/ml 0.56 5.2%
  • Tests
    2 x 96 well plate
  • Sample type
    Cell culture supernatant, Serum, Plasma
  • Assay typeSandwich
  • Sensitivity
    < 3 U/ml
  • Range
    3.12 U/ml - 100 U/ml
  • Assay time
    1h 45m
  • Assay durationMultiple steps standard assay
  • Species reactivity
    Reacts with: Human
  • Product overview

    INTENDED USE

    The Human sCD21 ELISA kit is to be used for the in-vitro quantitative determination of the molecule in human serum, plasma, buffered solutions or cell culture medium. The assay will recognize natural human sCD21. This kit has been configured for research use only and is not to be used in diagnostic procedures.

    PRINCIPLE OF THE METHOD

    The sCD21 Kit is a solid phase sandwich Enzyme Linked-Immuno-Sorbent Assay (ELISA). A monoclonal antibody specific for CD21 has been coated onto the wells of the microtiter strips provided. Samples, including standards of known sCD21 concentrations are pipetted into these wells.

    During the first incubation, the sCD21 antigen and a biotinylated monoclonal antibody specific for CD21 are simultaneously incubated.

    After washing, the enzyme (streptavidin-peroxydase) is added. After incubation and washing to remove all the unbound enzyme, a substrate solution which is acting on the bound enzyme is added to induce a coloured reaction product. The intensity of this coloured product is directly proportional to the concentration of sCD21 present in the samples.

     

    Recognizes natural soluble CD21

    Range: 3.12 U/ml - 100 U/ml

    Sensitivity <3 U/ml

  • Notes

    Safety Information:

    • For research use only.
    • The human blood components included in this kit have been tested and found non reactive for HBsAg and anti-HIV. Nevertheless, no known method can offer complete assurance that human blood derivatives will not transmit hepatitis, AIDS or other infections. Therefore, handling of reagents, serum or plasma specimens should be in accordance with local safety procedures , e.g. CDC/NIH Health manual : " Biosafety in Microbiological and Biomedical Laboratories" 1984.
    • Avoid any skin contact with H2SO4 and TMB. In case of contact, wash thoroughly with water.
    • Do not eat, drink, smoke or apply cosmetics where kit reagents are used.
    • Do not pipette by mouth.
    • The stop solution in this kit contains 9.8% sulphuric acid.

  • Tested applicationsELISA more details
  • PlatformMicroplate

Properties

  • RelevanceCD21 also known as complement receptor 2 (CR2), C3d receptor or EBV receptor is a 140 kDa protein. CD21 is a glycosylated type I transmembrane protein consisting of an extracellular face of a series of 15 or 16 CCP domains. CD21 is the receptor for complement components C3d and iC3b as well as the Epstein-Barr virus (EBV) glycoprotein gp350/220. The soluble CD21 (sCD21) was shown to efficiently trigger CD23 signalling pathways in human monocytes. By inducing release of proinflammatory cytokines and upregulating expression of molecules involved in antigen presentation, sCD21 modulates critical monocyte functions that may be relevant to allergic and inflammatory disorders.
  • Cellular localizationType 1 membrane protein
  • Database links
  • Applications

    Our Abpromise guarantee covers the use of ab45909 in the following tested applications.

    The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

    Application Notes
    ELISA ELISA

    CD21 Human ELISA Kit images

    • Typical sCD21 standard curve ranging from 3.12 to 100U/mL

    References for CD21 Human ELISA Kit (ab45909)

    ab45909 has not yet been referenced specifically in any publications.

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    Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"