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Ultra-LEAF™ Purified anti-mouse CD28 Antibody

Pricing & Availability
Clone
37.51 (See other available formats)
Regulatory Status
RUO
Other Names
Tp44, T44
Isotype
Syrian Hamster IgG
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Product Citations
publications
37pt51_LEAF_081908
C57BL/6 splenocytes stained with LEAF™ purified 37.51, followed by anti-Syrian hamster IgG FITC
  • 37pt51_LEAF_081908
    C57BL/6 splenocytes stained with LEAF™ purified 37.51, followed by anti-Syrian hamster IgG FITC
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102122 25 mg 1127€
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102131 50 mg 1884€
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102132 100 mg 2707€
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102115 100 µg 88€
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102116 1 mg 132€
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102121 5 mg 432€
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Description

CD28 is a 44 kD glycoprotein, also known as Tp44 or T44. It is a member of the Ig superfamily, expressed on thymocytes, most peripheral T cells, and NK cells. In association with CD80 (B7-1) and CD86 (B7-2), CD28 acts as the second signal for T and NK cell activation and proliferation. The 37.51 antibody has been reported to augment in vitro T cell proliferation and cytokine production, and promote CTL development.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Mouse
Antibody Type
Monoclonal
Host Species
Syrian Hamster
Immunogen
C57BL/6 mouse T-cell lymphoma EL-4
Formulation
0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.
Endotoxin Level
Less than 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.
Preparation
The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
Concentration
The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. 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. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.
Application

FC - Quality tested
IP, IHC-F, Costim, Block - Reported in the literature, not verified in house
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 ≤ 1.0 µg per million cells in 100 µl volume or 100 µl of whole blood. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation1, in vitro costimulation of T and NK cells1, in vitro blocking of allogeneic mixed leukocyte response and inhibition of MHC-unrestricted CTL cytotoxicity3,4, in vitro induction of thymocyte differentiation2,5-9,11, and immunohistochemical staining of acetone-fixed frozen sections. For in vivo studies or highly sensitive assays, we recommend Ultra-LEAF™ purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) (Cat. No. 102116).

Additional Product Notes

Get a 50% discount on this product when purchased in our Activation Bundles. Restrictions apply. Learn more…

Application References

(PubMed link indicates BioLegend citation)
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  2. Cibotti R, et al. 1997. Immunity 6:245. (Costim)
  3. Masten BJ, et al. 1997. Am. J. Respir. Cell Mol. Biol. 16:335. (Block)
  4. Nishio M, et al. 1996. J. Immunol. 157:4347. (Block)
  5. Zhang N and He Y-W, 2005. J. Exp. Med. 202:395. (Costim)
  6. Terrazas LI, et al. 2005. Intl. J. Parasitology. 35:1349. (Costim)
  7. Perchonock CE, et al. 2006. Mol Cell Biol. 26(16):6005. (Costim)
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  9. Pua HH, et al. 2007. J. Exp. Med. 204:25. (Costim)
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  77. Minns D, et al. 2021. Nat Commun. 12:1285. PubMed
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  79. Koch K, et al. 2022. Int J Mol Sci. 23:. PubMed
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RRID
AB_11147170 (BioLegend Cat. No. 102122)
AB_11147170 (BioLegend Cat. No. 102131)
AB_11147170 (BioLegend Cat. No. 102132)
AB_11147170 (BioLegend Cat. No. 102115)
AB_11147170 (BioLegend Cat. No. 102116)
AB_11147170 (BioLegend Cat. No. 102121)
Disclaimer

This product may be used for research purposes only. It is not licensed for resale and may only be used by the buyer. This product may not be used and is not licensed for clinical assays where the results of such assays are provided as a diagnostic service. If a diagnostic or therapeutic use is anticipated then a license must be requested from the University of California. The availability of such diagnostic and therapeutic use license(s) cannot be guaranteed from the University of California.

Antigen Details

Structure
Ig superfamily, 44 kD
Distribution

Thymocytes, CD4+, CD8+ peripheral T cells, NK cells

Function
Costimulates T and NK cells
Ligand/Receptor
CD80 (B7-1), CD86 (B7-2)
Cell Type
NK cells, T cells, Thymocytes, Tregs
Biology Area
Costimulatory Molecules, Immunology
Molecular Family
CD Molecules
Antigen References

1. Barclay AN, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Lenschow DJ, et al. 1996. Annu. Rev. Immunol. 14:233.
3. Gross JA, et al. 1992. J. Immunol. 149:380.

Gene ID
12487 View all products for this Gene ID
Specificity (DOES NOT SHOW ON TDS):
CD28
Specificity Alt (DOES NOT SHOW ON TDS):
CD28
App Abbreviation (DOES NOT SHOW ON TDS):
FC,IP,IHC-F,Costim,Block
UniProt
View information about CD28 on UniProt.org

Related FAQs

Do you guarantee that your antibodies are totally pathogen free?

BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.

Does BioLegend test each Ultra-LEAF™ antibody by functional assay?

No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.

Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?

No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.

Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?

We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.

Go To Top Version: 1    Revision Date: 11.30.2012

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

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

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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