CD8A Antibody

This mAb is specific for the 32kDa alpha chain of human CD8, known as CD8a or CD8 alpha. CD8 is a cell surface receptor expressed either as a heterodimer with the CD8 beta chain (CD8 alpha/beta) or as a homodimer (CD8 alpha/alpha) . A majority of thymocytes and a subpopulation of mature T cells and NK cells express CD8a. CD8 binds to MHC class 1 and through its association with protein tyrosine kinase p56lck plays a role in T cell development and activation of mature T cells. For mature T-cells, CD4 and CD8 are mutually exclusive, so anti-CD8, generally used in conjunction with anti-CD4. It is a useful marker for distinguishing helper/inducer T-lymphocytes, and most peripheral T-cell lymphomas are CD4+/CD8-. Anaplastic large cell lymphoma is usually CD4+ and CD8-, and in T-lymphoblastic lymphoma/leukemia, CD4 and CD8 are often co-expressed. CD8 is also found in littoral cell angioma of the spleen.

Product Specifications

CAS Number

9000-83-3

Specifications

Immunohistochemistry (FFPE) : 1-2 µg/mL for 30 min at RT

UniProt

P01732

Host

Rabbit

Reactivity

Human

Immunogen

Recombinant human full-length CD8a protein was used as the immunogen for the CD8A antibody.

Clonality

Recombinant Monoclonal

Isotype

IgG κ

Clone

CD8/7793R

Type

Recombinant

Applications

IHC-P

Purity

Protein A/G affinity

Format

Purified

Buffer

0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide

Reconstitution

Aliquot the CD8A antibody and store frozen at -20oC or colder. Avoid repeated freeze-thaw cycles.

Limitations

This CD8A antibody is available for research use only.

Storage Conditions

Aliquot the CD8A antibody and store frozen at -20°C or colder. Avoid repeated freeze-thaw cycles.

Formulation

0.2 mg/mL in 1X PBS with 0.1 mg/mL BSA (US sourced), 0.05% sodium azide

Applications Notes

Optimal dilution of the CD8A antibody should be determined by the researcher.

Location

Cell surface

Image Legend

IHC staining of FFPE human lymph node tissue with CD8a antibody (clone CD8/7793R) . Inset: PBS used in place of primary Ab (secondary Ab negative control) . HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.