Cd8b1 Rat Monoclonal Antibody [Clone ID: CT-CD8b]

Specifications

Product Data
Clone Name	CT-CD8b
Applications	FC
Recommend Dilution	Flow Cytometry Analysis (see Protocols).
Reactivity	Mouse
Host	Rat
Clonality	Monoclonal
Specificity	This anti-mouse CD8β Chain monoclonal antibody reacts with the mouse CD8 chain. The CD8 β Chain is also named Ly-3. The CD8 chain associates with the CD8 chain to form the CD8 / heterodimer on MHC class I restricted T-cells (cytotoxic T cells) and most thymocytes1. Since a small subset of T cells (IEL cells) express CD8 / homodimers rather than CD8 / heterodimers, investigators should use an antibody directed against the CD8 chain (CL168B, clone CT-CD8a) to definitively label mouse CD8 cells.
Formulation	PBS, 0.02% NaN3 and EIA grade BSA as a stabilizing protein to bring total protein concentration to 4-5 mg/ml Label: Biotin State: Liquid purified IgG
Concentration	lot specific
Conjugation	Biotin
Storage Condition	Store the antibody undiluted at 2-8°C for one month or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Gene Name	CD8 antigen, beta chain 1
Database Link	Entrez Gene 12526 Mouse UniProt ID P10300
Background	The CD8 antigen is a cell surface glycoprotein found on most cytotoxic T lymphocytes that mediates efficient cell to cell interactions within the immune system. The CD8 antigen, acting as a coreceptor, and the T cell receptor on the T lymphocyte recognize antigen displayed by an antigen presenting cell (APC) in the context of class I MHC molecules. The functional coreceptor is either a homodimer composed of two alpha chains, or a heterodimer composed of one alpha and one beta chain. Both alpha and beta chains share significant homology to immunoglobulin variable light chains.
Synonyms	CD8B, CD8B1
Note	Protocol: FLOW CYTOMETRY ANALYSIS: Method: 1. Prepare a cell suspension in media A. For cell preparations, deplete the red blood cell population with Lympholyte®-M cell separation medium. 2. Wash 2 times. 3. Resuspend the cells to a concentration of 2x10e7 cells/ml in media A. Add 50 µl of this suspension to each tube (each tube will then contain 1 x 10e6 cells, representing 1 test). 4. To each tube, add ~1.0 µg* of this Ab per 10e6 cells. 5. Vortex the tubes to ensure thorough mixing of antibody and cells. 6. Incubate the tubes for 30 minutes at 4°C. 7. Wash 2 times at 4°C. 8. Add 100 µl of secondary antibody (Streptavidin-PE) at a 1:500 dilution. 9. Incubate tubes at 4°C for 30 - 60 minutes (It is recommended that tubes are protected from light since most fluorochromes are light sensitive). 10. Wash 2 times at 4°C. 11. Resuspend the cell pellet in 50 µl ice cold media B. 12. Transfer to suitable tubes for flow cytometric analysis containing 15µl of propidium iodide at 0.5 mg/ml in PBS. This stains dead cells by intercalating in DNA. Media: A. Phosphate buffered saline (pH 7.2) + 5% normal serum of host species + sodium azide (100 µl of 2M sodium azide in 100 mls). B. Phosphate buffered saline (pH 7.2) + 0.5% Bovine serum albumin + sodium azide (100 µl of 2M sodium azide in 100 mls). Results - Tissue Distribution Mouse Strain: BALB/c Cell Concentration: 1x10e6 cells per test Antibody Concentration Used: 1.0 µg/10e6 cells Isotypic Control: Biotin Rat IgG2a
Reference Data

*Delivery time may vary from web posted schedule. Occasional delays may occur due to unforeseen complexities in the preparation of your product. International customers may expect an additional 1-2 weeks in shipping.