The CD28.2 monoclonal antibody binds to human CD28, a 44 kD disulfide-linked homodimeric type I glycoprotein¹. It is a member of the immunoglobulin superfamily and is also known as T44 or Tp44. CD28 is expressed on most T lineage cells, NK cell subsets, and plasma cells. CD28 binds both CD80 and CD86 using a highly conserved motif MYPPY in the CDR3-like loop, and is considered a major costimulatory molecule, inducing T lymphocyte activation and IL-2 synthesis, and preventing cell death. In vitro studies indicate that ligation of CD28 on T cells by CD80 and CD86 on antigen presenting cells provides a costimulatory signal required for T cell activation and proliferation^{2, 3}.

The antibody was purified by affinity chromatography and conjugated with a fluorophore under optimal conditions.

PRODUCT DETAILS

Clone: CD28.2

Specificity: CD28

Reactivity: Human

Format: cFluor^® V435*

Isotype: Mouse IgG1, κ

Tested Dilution: 5 µL / test

Application: Flow Cytometry

Storage: 2-8°C and protected from light. Do not freeze

Formulation: Phosphate-buffered saline, pH 7.2, containing 0.1% PEG 3350, 0.1% Pluronic F-68, 0.05% Tween-20, 0.09% sodium azide and 1% BSA (BSA Country of Origin USA)

Data Sheets: TDS | SDS

RECOMMENDED USAGE

Each lot of this antibody is quality control tested using flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µL per 1 million cells in a staining volume of 100 µL. If whole blood is analyzed, then use 5 µL per 100 µL. It is recommended that users titrate the antibody to obtain the optimal result for their specific application.

Please briefly centrifuge the reagent vial before use.

Use appropriate personal protective equipment per the product safety data sheet when using this product.

REFERENCES

1. Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
2. June CH, et al. 1994. Immunol. Today 15:321.
3. Linskey PS, et al. 1993. Annu. Rev. Immunol. 11:191.

For research use only. Not intended for use in diagnostic procedures.

^*Cytek^® cFluor^® V435 is StarBright^™ Violet 440 Dye, manufactured and provided by Bio-Rad, Inc.

StarBright is a trademark of Bio-Rad Laboratories, Inc. in certain jurisdictions. StarBright Dyes are manufactured and provided by BioRad under an Agreement between Bio-Rad supplied to a company, being subject to certain conditions.