Purified anti-mouse CD28 Antibody

Pricing & Availability
37.51 (See other available formats)
Regulatory Status
Other Names
Tp44, T44
Syrian Hamster IgG
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Product Citations
C57BL/6 splenocytes stained with 37.51 PE and CD3 FITC
  • 37.51
    C57BL/6 splenocytes stained with 37.51 PE and CD3 FITC
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102101 50 µg 40€
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102102 500 µg 102€
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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

Product Details

Verified Reactivity
Antibody Type
Host Species
Syrian Hamster
C57BL/6 mouse T-cell lymphoma EL-4
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
The antibody was purified by affinity chromatography.
0.5 mg/ml
Storage & Handling
The CD28 antibody solution should be stored undiluted between 2°C and 8°C.

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. 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).

Application References

(PubMed link indicates BioLegend citation)
  1. Gross JA, et al. 1992. J. Immunol. 149:380. (IP, Costim)
  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)
  8. Wang W, et al. 2007. J. Immunol. 178:4885. (Costim)
  9. Pua HH, et al. 2007. J. Exp. Med. 204:25. (Costim)
  10. Perchonock CE, et al. 2007. J. Immunol. 179:1768.
  11. Barbi J, et al. 2007. Blood 110:2215.
  12. Milpied P, et al. 2011. Blood 118:2993. PubMed
  13. Cunningham NR, et al. 2011. Int Immunol. 23:693. PubMed
  14. Crispin JC, et al. 2012. J. Immunol. 188:3567. PubMed
  15. Li CR, et al. 2014. J Immunol. 192:1425. PubMed
  16. Blankenhaus B, et al. 2014. PLoS Pathog. 10:1003913. PubMed
Product Citations
  1. Palazon A, et al. 2017. Cancer Cell. . 10.1016/j.ccell.2017.10.003. PubMed
  2. Kitamura T, et al. 2018. Front Immunol. 8:2004. PubMed
  3. Hao Y, et al. 2018. Front Immunol. 9:1127. PubMed
  4. Sekiya T et al. 2018. Cell reports. 24(6):1627-1638 . PubMed
  5. Miret JJ, et al. 2019. J Immunother Cancer. 7:32. PubMed
  6. Tritama E, et al. 2018. Hum Vaccin Immunother. 14:1524. PubMed
  7. Racioppi L, et al. 2019. Nat Commun. 10:2450. PubMed
  8. Katagiri T, et al. 2019. Mucosal Immunol. 12:p1104. PubMed
  9. Xu L et al. 2017. Immunity. 47(3):538-551 . PubMed
  10. Niven J, et al. 2019. Cell Rep. 28:21. PubMed
  11. Simula L et al. 2018. Cell reports. 25(11):3059-3073 . PubMed
  12. Akiyama C, et al. 2019. J Immunol. 203:835. PubMed
  13. Hawse WF, et al. 2019. J Immunol. 203:2771. PubMed
  14. Yamada T, et al. 2019. J Immunol. 202:1088. PubMed
  15. Oghumu S, et al. 2019. J Immunol. 203:789. PubMed
  16. Komuczki J, et al. 2019. Immunity. 50:1289. PubMed
  17. Shimokawa C et al. 2017. Immunity. 46(5):863-874 . PubMed
  18. Tuzlak S, et al. 2017. Cell Death Differ. 24:523. PubMed
  19. Schiering C, et al. 2017. Nature. 542:242. PubMed
  20. Majchrzak K, et al. 2017. JCI Insight. 2:e90547. PubMed
  21. Scholz T, et al. 2017. PLoS One. 12:e0182646. PubMed
  22. Link MA, et al. 2017. PLoS One. 12:e0184320. PubMed
  23. Grinberg–Bleyer Y, et al. 2017. Cell. 170:1096. PubMed
  24. Oh H, et al. 2017. Immunity. 47:450. PubMed
  25. Abe Y, et al. 2017. Biochem Biophys Rep. 0.543055556. PubMed
  26. Doorduijn EM, et al. 2018. Front Immunol. 0.416666667. PubMed
  27. Lee JY, et al. 2018. Front Immunol. 0.678472222. PubMed
  28. Stelekati E, et al. 2018. Cell Rep. 2.445833333. PubMed
  29. Patterson AR, et al. 2019. J Allergy Clin Immunol. 143:245. PubMed
  30. Thumkeo D, et al. 2020. Sci Adv. 6:eaay2432. PubMed
  31. Hanoteau A, et al. 2019. J Immunother Cancer. 7:10. PubMed
  32. Klein JC, et al. 2017. Nat Commun. 8:14600. PubMed
  33. Krovi SH, et al. 2019. Proc Natl Acad Sci U S A. 116:22252. PubMed
  34. Rao TN, et al. 2020. J Immunol. 204:2600. PubMed
  35. Rasoulouniriana D, et al. 2019. J Clin Invest. 129:4151. PubMed
  36. Liang J, et al. 2017. Nat Commun. 8:15732. PubMed
  37. Sanctuary MR, et al. 2019. Mucosal Immunol. 0.638888889. PubMed
  38. Khan KA, et al. 2020. NPJ Breast Cancer. 6:29. PubMed
  39. Cross EW, et al. 2019. PLoS One. 14:e0211446. PubMed
  40. Cohen MA, et al. 2020. Cell Stem Cell. 26(4):579-592. PubMed
  41. Rosenberg J, et al. 2020. Cell Systems. 10(5):433-444. PubMed
  42. He N 2005. J Exp Med. 202:395. PubMed
  43. He N 2005. J Immunol. 174:6967. PubMed
  44. Perchonock C, et al. 2006. Mol Cell Biol . 26:6005. PubMed
  45. Perchonock C, et al. 2007. J Immunol. 179:1768. PubMed
  46. Rosenberger C, et al. 2008. Proc Natl Acad Sci U S A. 105:2544. PubMed
  47. Cunningham N, et al. 2011. Int Immunol. 1.439583333. PubMed
  48. Milpied P, et al. 2011. Blood. 118:2993. PubMed
  49. Crispin J, et al. 2012. J Immunol. 188:3567. PubMed
  50. Li C, et al. 2014. J Immunol. 192:1425. PubMed
  51. Blankenhaus B, et al. 2014. PLoS Pathog. 10:1003913. PubMed
  52. McCully M, et al. 2015. J Immunol. 195: 96 - 104. PubMed
  53. Endo Y, et al. 2015. Cell Rep. 12: 1042-1055. PubMed
  54. Kim K, et al. 2016. PLoS One. 11: 0148576. PubMed
  55. Hollmann C, et al. 2016. J Immunol. 197: 3130 - 3141. PubMed
  56. Plaza-Sirvent C, et al. 2017. Cell Rep. 18(1):12-22. PubMed
  57. Galeano Nio JL, et al. 2020. eLife. 9:00. PubMed
  58. Montes de Oca M, et al. 2020. PLoS Pathog. 16:e1008994. PubMed
  59. Sharma M, et al. 2020. Circ Res. 127:335. PubMed
  60. Takushi SE, et al. 2020. Hum Gene Ther. 31:626. PubMed
  61. He Y, et al. 2021. eLife. 10:00. PubMed
  62. Uzhachenko RV, et al. 2021. Cell Reports. 35(1):108944. PubMed
  63. Lu SX, et al. 2021. Cell. . PubMed
  64. Marangoni F, et al. 2021. Cell. . PubMed
AB_312866 (BioLegend Cat. No. 102101)
AB_312867 (BioLegend Cat. No. 102102)

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

Ig superfamily, 44 kD

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

Costimulates T and NK cells
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
View information about CD28 on UniProt.org

Related FAQs

There are no FAQs for this product.
Go To Top Version: 1    Revision Date: 11.30.2012

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, www.biolegend.com/ordering#license). BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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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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