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Catalog Number | orb248237 |
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Category | Antibodies |
Description | CD8 is a cell surface receptor expressed either as a heterodimer with the beta chain or as a homodimer. A majority of thymocytes and a subpopulation of mature Tcells and NK cells express CD8a. It binds to MHC class 1 and through its association with protein tyrosine kinase p56lck plays a role in Tcell development and activation of mature Tcells. For mature Tcells, CD8 and 4 are mutually exclusive, so antibody to CD8 is generally used in conjunction with antibody to CD4. CD8a antibody is a useful marker for distinguishing helper/inducer T-lymphocytes, and most peripheral Tcell lymphomas are CD4+/CD8-. Anaplastic large cell lymphoma is usually CD4+/CD8-, and in T-lymphoblastic lymphoma/leukemia, they are often co-expressed. It is also found in littoral cell angioma of the spleen. |
Species/Host | Mouse |
Clonality | Monoclonal |
Clone Number | C8/468 |
Tested applications | IF, IHC-P |
Reactivity | Human |
Isotype | Mouse IgG1, kappa |
Immunogen | Human recombinant protein was used as the immunogen for this CD8a antibody. |
Dilution range | Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT,Immunofluorescence: 1-2ug/ml |
Purity | Protein G affinity chromatography |
Conjugation | Unconjugated |
Formula | 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide |
Hazard Information | This CD8a antibody is available for research use only. |
Entrez | 925 |
UniProt ID | P01732 |
Storage | Store the CD8a antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide). |
Buffer/Preservatives | 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced) and 0.05% sodium azide |
Note | For research use only |
Application notes | The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the CD8a antibody to be titered up or down for optimal performance.1. Staining of formalin-fixed tissues requires boiling tissue sections in pH 9 10mM Tris with 1mM EDTA for 10-20 min followed by cooling at RT for 20 minutes.2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min. |
Expiration Date | 12 months from date of receipt. |
Immunohistochemical analysis of formalin-fixed and paraffin-embedded human tonsil (20X) tissue using CD8a antibody
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