CD8 alpha Antibody (CT-8) [FITC]


Flow Cytometry: CD8 alpha Antibody (CT-8) [FITC] [NBP1-28271] - Analysis of peripheral blood mononuclear cells by multiple staining.

Product Details

Reactivity Av, Ch, TrSpecies Glossary
Applications Flow, IHC, IHC-Fr, IHC-P, IP, ICC
Please see the vial label for concentration. If unlisted please contact technical services.

Order Details

CD8 alpha Antibody (CT-8) [FITC] Summary

alpha chain (34-kDa) of chicken CD8
alpha chain (34-kDa) of chicken CD8
IgG1 Kappa
Protein A or G purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Packaging, Storage & Formulations

Store at 4C. Do not freeze.
FITC (A=495, E=519)
0.05% Sodium Azide
Please see the vial label for concentration. If unlisted please contact technical services.
Protein A or G purified


Protect conjugated forms from light.

Alternate Names for CD8 alpha Antibody (CT-8) [FITC]

  • CD8 antigen, alpha polypeptide (p32)
  • CD8
  • CD8a antigen
  • CD8a molecule
  • Leu2 T-lymphocyte antigen
  • Leu2
  • MAL
  • OKT8 T-cell antigen
  • p32
  • RPA-T8 antibody flow
  • RPA-T8 Antibody
  • RPA-T8 CD8
  • RPA-T8 Clone
  • RPA-T8 Flow
  • T cell co-receptor
  • T8 T-cell antigen
  • T-cell antigen Leu2
  • T-cell surface glycoprotein CD8 alpha chain
  • T-lymphocyte differentiation antigen T8/Leu-2


In the chicken, the CD8 molecule is present in two forms: (i) a homodimer of two alpha chains, and (ii) a heterodimer of an alpha chain and a beta chain. (1) While the vast majority of CD8+ cells in the thymus, spleen, and blood of adult chickens express both CD8alpha- and CD8beta-chains, a relatively large proportion of the CD8+ TCR- gamma delta cells in the spleens of embryos and young chicks express only the alpha-chain of CD8. Among intestinal epithelial lymphocytes, the major CD8+ T cell populations present in mice are conserved, but there is a population of TCR-gamma delta CD8 alpha beta cells in the chicken that is not found in rodents. (1,3) Chicken CD8 is expressed on approximately 80% of thymocytes, 15% of blood mononuclear cells and 50% of spleen cells, but <1% of cells in the bursa and bone marrow. (1,2) MAb CT-8 recognizes the CD8alpha chain.1


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Product General Protocols

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FAQs for CD8 alpha Antibody (NBP1-28271). (Showing 1 - 5 of 5 FAQ).

  1. I'm looking for a good anti CD8  antibody working on immunofluorescence on murine tumoral tissue fixed in paraformaldehyde, cryoprotected with sucrose, frozen in OCT medium and sectioned with a cryostat.
    • I would recommend our CD8 alpha antibody NBP1-49045, it is guaranteed to work in IHC-P and and IHC-FR.   
  2. How do I know if this will actually work in IHC?
    • This CD8 alpha antibody has been validated in IHC and has been cited in a paper where it was used in IHC.
  3. Will this CD8 alpha antibody work for rabbit in IHC-FR?
    • Unfortunately this CD8 alpha antibody has not yet been validated in rabbit and there no sequence info in uniprot yet so we can't speculate based on homology. You may want to take advantage of our innovator's reward program which will allow you to test in rabbit without any financial risk. 
  4. Does this CD8 alpha antibody detect both forms of CD8?
    • Both the alpha - beta heterodimer as well as the alpha - alpha homodimer are detected by the (53-6.7) CD8 alpha antibody.
  5. Would you recommend your CD8 alpha antibody as a T-Cell marker? 
    • Yes this CD8 alpha anitbody has been cited in a study where it was used in FACS to separate out CD8+ T-cells. Please see the references tab PMID: 1608966. It is important to note that our CD8 alpha antibody may also stain mature dendritic cells and NK cells.

Secondary Antibodies


Isotype Controls

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Blogs on CD8 alpha.

CD8 alpha - Marker for cytotoxic T lymphocytes
The T-cell co-receptor CD8 is a cell-surface glycoprotein that bridges the lipid bilayer by interacting externally with ligands, such as major histocompatibility complex (MHC) class I, as well as internally with signaling molecules such as tyrosine ki...  Read full blog post.

Contact Information

Product PDFs


Gene Symbol CD8A

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