Anti-CD28 Antibody [37.51]

$ 49.00$ 259.00
Please Select Product Options Below To View The Catalog Number.

Species: Mouse
Tested Applications: Flow Cytometry, immunoprecipitation
Available Conjugates: Unconjugated
Isotype: Golden Syrian Hamster IgG
Mass Spec Validated?: Not MS Validated

Product NumberDescriptionPrice
QAB99-25ug Size: 25 ug, Tag: Unconjugated $ 49.00
QAB99-100ug Size: 100 ug, Tag: Unconjugated $ 89.00
QAB99-500ug Size: 500 ug, Tag: Unconjugated $ 179.00
QAB99-QF630-100ug Size: 100 tests, Tag: Qfluor™ 630 $ 169.00
QAB99-QF630-500ug Size: 500 tests, Tag: Qfluor™ 630 $ 259.00
Shipping Information
In Stock.
Flat Rate Shipping Anywhere in the US: $45
Datasheets and Documentation
Product Datasheet
Certificate of Analysis and Tags (Coming Soon)
Lot Number:

Expiration Date:

Concentration (Write Lyophilized if Lyophilized):

Reconsitution Instructions (Leave Blank if Liquid):

Manufacture Date:


Bioactivity (test results eg. IU/ml):

SKU: QAB99-25ug
CD28 General Information
Alternate Names
CD28, TP44, CD28RNA
Curated Database and Bioinformatic Data
Gene Symbol Cd28
Entrez Gene ID 12487
Ensemble Gene ID ENSMUSG00000102412, ENSMUSG00000026012
RefSeq Protein Accession(s) NP_031668
RefSeq mRNA Accession(s) NM_007642
RefSeq Genomic Accession(s) NG_187019, NC_000067, NW_006763128
UniProt ID(s) P31041, Q8CDB3
UniGene ID(s) P31041, Q8CDB3
Cosmic ID(s) Cd28
KEGG Gene ID(s) mmu:12487
General Description of CD28.
The 37.51 antibody reacts with mouse CD28, a 45 kDa glycoprotein which acts as a co-stimulatory receptor in support of the T cell receptor (TCR). CD28 exists as a homodimer with specificity for two known ligands, known as B7-1 (CD80) and B7-2 (CD86), expressed on activated B cells and antigen-presenting cells. These ligands trigger CD28 signaling in concert with TCR activation to drive T cell proliferation, induce high-level expression of IL-2, impart resistance to apoptosis, and enhance T cell cytotoxicity. The interaction / co-stimulatory signaling between the B7 ligands and CD28 provides crucial communication between T cells and B cells or APCs to coordinate the adaptive immune response. Other members of the CD28 family of co-stimulatory receptors include CTLA-4 (CD152), PD-1 (CD279), ICOS and BTLA.The 37.51 may be used as a phenotypic marker for CD28, which is expressed on all CD4+ T cells and CD8+ T cells, and on NK cells in mouse. In addition, the 37.51 antibody is widely used to activate the CD28 receptor in vitro and in vivo. Please choose the appropriate format for each application.

Mouse Anti-CD28 Antibody Product Attributes

Species: Mouse
Tested Applications: Flow Cytometry, immunoprecipitation.
Application Notes: See Product Datasheet for Recommended Dilution Range. Requires Experimental Optimization
Clonality: Monoclonal Antibody
Anti-CD28 Antibody Clone: 37.51
Clone 37.51 Host and Isotype: Golden Syrian Hamster IgG
Buffer and Stabilizer: 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, pH 7.2
Antibody Concentration: 0.5 mg/mL
Storage Conditions: 2-8C protected from light. Stable for 12 Months. Do Not Freeze.

CD28 Previously Observed Antibody Staining Patterns

Observed Antibody Staining Data By Tissue Type:

Variations in CD28 / TP44 antibody staining intensity in immunohistochemistry on tissue sections are present across different anatomical locations. Low, but measureable presence of CD28 / TP44 could be seen in cells in the red pulp in spleen, germinal center cells in the tonsil, hematopoietic cells in the bone marrow and lymphoid tissue in appendix. We were unable to detect CD28 / TP44 in other tissues. Disease states, inflammation, and other physiological changes can have a substantial impact on antibody staining patterns. These measurements were all taken in tissues deemed normal or from patients without known disease.

Selected References

Johnston RJ, Choi YS, Diamond JA, Yang JA, and Crotty S. 2012. J. Exp. Med. 209:243-250. (in vitro activation)Hafalla JCR, Burgold J, Dorhoi A, Gross O, Ruland J, Kaufmann SHE, and Matuschewski K. 2012. Infect. Immun. 80:1274-1279. (in vitro activation)Driessens G, Zheng Y, Locke F, Cannon JL, Gounari F, and Gajewski TF. 2011. J. Immunol. 186:784-790. (Flow cytometry)Alcazar I, Cortes I, Zaballos A, Hernandez C, Fruman DA, Barber DF, and Carrera AC. 2009. Blood. 113:3198-3208. (Immunoprecipitation, in vitro activationAlbert MH, Yu X-Z, Martin PJ, and Anasetti C. 2005. Blood. 105:1355-1361. (in vivo activation)

Limitations and Warranty

enQuire Bio's Mouse Anti-CD28 Monoclonal is available for Research Use Only. This antibody is guaranteed to work for a period of two years when properly stored.

There are no reviews yet.

Be the first to review “Anti-CD28 Antibody [37.51]”

Your email address will not be published.

Share a Protocol (View Reviewed Protocols Below)

Protocol Title




  protocol submission gif
enQuire Bio, LLC   8420 S Continental Divide Rd, #202   Littleton, CO 80127
Chat: See lower right corner. | | Fax: 1-720-897-3730
Customer Service Available M-F 8AM-6PM MST or 24/7 Via Email

Anti-CD28 Antibody [37.51]