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Safety Data Sheet (SDS) Purified Anti-mouse CD8b Antibody     Product Data Sheet (PDF)    
Purified Anti-mouse CD8b Antibody
1233010 500 µg $170.00       
Clone: YTS156.7.7
Isotype: Rat IgG2b, κ
Reactivity: Mouse CD8 beta chain
Immunogen: Mouse thymocytes
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography.
Concentration: 0.5 mg/ml
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C.

FC - Quality tested
IF - Validated

Application Notes:

Additional reported applications (for the relevant formats) include: immunohistochemistry of acetone-fixed frozen tissue sections.

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 ≤0.25 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

Application References:

1. McNical AM, et al. 2007. Eur. J. Immunol. 37:1634.

C57BL/6 mouse splenocytes stained with

C57BL/6 mouse splenocytes stained with purified YTS156.7.7, followed by anti-rat IgG FITC

Mouse OT-I primary CTL cells

Mouse OT-I primary CTL cells were stained with purified anti-mouse CD8b primary antibody at 1:50 dilution in PBS/1%NGS incubated O/N at 4°C, detected with anti-rat IgG2b FITC at 1:2000 dilution for 1hr at room temperature (green), plus DAPI staining for nuclei (blue). Imaged with a Zeiss 200M deconvolution microscope (deconvolution applied). Negative control was anti-rat IgG2b isotype control plus secondary antibody, same conditions. Images courtesy of Dr. Javier Casas at The Scripps Research Institute.


CD8b is the 32 kD β chain of CD8, also known as Lyt-3 or Ly-3. It is a member of the Ig superfamily expressed as a heterodimer with the CD8α chain on a subset of MHC class I-restricted T cells and most thymocytes. CD8 is a co-receptor for the TCR complex involved in T cell activation.

Other Names: Lyt-3, Ly-3
Structure: Ig superfamily, CD8β chain, 34 kD
Distribution: Majority of thymocytes, cytotoxic T cell subsets
Function: Co-receptor of TCR
Ligand Receptor: MHC class I
Antigen References:

1.Barclay A, et al. 1997. The Leukocyte antigen Facts Book Academic Press.
2. Zamoyska R. 1994. Immunity 1:243-246.
3. Ellmeier W, et al. 1999. Annu. Rev Immunol 17:523.
4. Ledbetter JA, et al. 1981. J. Exp. Med. 153:1503.