PE anti-human CD8a Antibody

Pricing & Availability
S21010F (See other available formats)
Regulatory Status
Other Names
T8, Leu2, CD8 Antigen
Mouse IgG2b, κ
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Product Citations
Human peripheral blood lymphocytes were stained with anti-human CD3 APC and anti-human CD8a (clone S21010F) PE (left) or mouse IgG2b, κ PE isotype control (right).
  • S21010F_PE_-CD8a_Ab_080223
    Human peripheral blood lymphocytes were stained with anti-human CD3 APC and anti-human CD8a (clone S21010F) PE (left) or mouse IgG2b, κ PE isotype control (right).
See PE spectral data
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388803 25 tests £21
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388804 100 tests £48
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CD8α, also known as T8 or Leu2, is a 32-34 kD type 1 transmembrane glycoprotein part of the immunoglobulin superfamily. CD8α is expressed on cytotoxic T cells, NK Cells, as well as a majority off thymocytes. CD8α can form a homodimer (CD8α/α) or heterodimer (CD8α/β) with CD8β. CD8α acts as a co-receptor with MHC class I-restricted T cell receptors in antigen recognition and T cell activation, and has been shown to play a role in thymic differentiation. Two domains in CD8α are important for function: the extracellular Ig superfamily domain binds the α3 domain of MHC Class I and the cytoplasmic CXCP motif binds the tyrosine kinase p56 Lck.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Antibody Type
Host Species
Human CD8α-transfected cells
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
The antibody was purified by affinity chromatography and conjugated with PE under optimal conditions.
Lot-specific (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.)
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

FC - Quality tested

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µL per million cells in 100 µL staining volume or 5 µL per 100 µL of whole blood. It is recommended that the reagent be titrated for optimal performance for each application.

Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
Application Notes

Clone S21010F can completely block the binding of clone HIT8a, clone RPA-T8, and clone SK1 on target cells and can be blocked by HIT8a and SK1.

Clone S21010F does not interfere with the binding of anti-human CD8β antibodies S21011A or QA20A40.

Clone S21010F shows comparable staining signals on 4% paraformaldehyde-fixed cells and unfixed cells.

AB_3068246 (BioLegend Cat. No. 388803)
AB_3068246 (BioLegend Cat. No. 388804)

Antigen Details

Ig superfamily

Subset of T Cells, most thymocytes, NK cells

TCR co-receptor
MHC Class I molecules
Cell Type
NK cells, T cells, Thymocytes
Biology Area
Molecular Family
CD Molecules
Antigen References
  1. Barclay N, et al. 1993. The Leucocyte Antigen FactsBook. Academic Press Inc. San Diego.
  2. Leahy, D.J, 1995. FASEB J. 9:17-25.
Gene ID
925 View all products for this Gene ID
View information about CD8alpha on

Related FAQs

What type of PE do you use in your conjugates?
We use R-PE in our conjugates.
Go To Top Version: 1    Revision Date: 08/02/2023

For Research Use Only. Not for diagnostic or therapeutic use.


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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.


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