Raji human Burkitt's lymphoma cell line was stained with Mouse Anti-Human B7‑1/CD80 Monoclonal Antibody (Catalog # MAB140, filled histogram) or isotype control antibody (Catalog # MAB002, open histogram), followed by ...read more
B7‑1/CD80 was detected in immersion fixed paraffin-embedded sections of human tonsil using Mouse Anti-Human B7‑1/CD80 Monoclonal Antibody (Catalog # MAB140) at 5 µg/mL overnight at 4 °C. Tissue was stained using ...read more
Recombinant Human B7‑1/CD80 Fc Chimera (Catalog # 140-B1) co-stimulates IL‑2 secretion in the Jurkat human acute T cell leukemia cell line in the presence of PHA in a dose-dependent manner (orange line), as measured ...read more
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human B7‑1/CD80 Val35-Asn242 (predicted) Accession # P33681
Detects human B7‑1/CD80 in ELISAs. In sandwich immunoassays, no cross-reactivity or interference with recombinant human (rh) B7-2, recombinant mouse (rm) B7-1, rmB7-2, rhB7-H1, rhB7-H2, rhB7-H3 or rmPD-L2 is observed.
<0.10 EU per 1 μg of the antibody by the LAL method.
Test in a species/application not listed above to receive a full credit towards a future purchase.
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Reconstitute at 0.5 mg/mL in sterile PBS.
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for B7-1/CD80 Antibody (37711) [Unconjugated]
Activation B7-1 antigen
costimulatory factor CD80
costimulatory molecule variant IgV-CD80
CTLA-4 counter-receptor B7.1
T-lymphocyte activation antigen CD80
B7-1 and B7-2, together with their receptors CD28 and CTLA-4, constitute one of the dominant co-stimulatory pathways that regulate T- and B-cell responses. Although both CTLA-4 and CD28 can bind to the same ligands, CTLA-4 binds to B7-1 and B7-2 with a 20‑100 fold higher affinity than CD28 and is involved in the down‑regulation of the immune response. B7-1 is expressed on activated B cells, activated T cells, and macrophages. B7-2 is constitutively expressed on interdigitating dendritic cells, Langerhans cells, peripheral blood dendritic cells, memory B cells, and germinal center B cells. Additionally, B7-2 is expressed at low levels on monocytes and can be up‑regulated through Interferon gamma. B7-1 and B7-2 are both members of the Immunoglobulin superfamily. Human B7-1 is a 288 amino acid (aa) protein containing a 34 aa signal peptide, a 208 aa extracellular domain, a 21 aa transmembrane domain, and a 25 aa cytoplasmic domain. Human B7-1 and B7-2 share 26% aa sequenceidentity. Human and mouse B7-1 share 44% aa sequenceidentity. However, it has been observed that both human and mouse B7-1 and B7-2 can bind to either human or mouse CD28 and CTLA-4, suggesting that there are conserved amino acids which form the B7-1/B7-2/CD28/CTLA-4 critical binding sites.
Azuma, M. et al. (1993) Nature 366:76.
Freeman, G.J. et al. (1993) Science 262:909.
Freeman, G. et al. (1991) J. Exp. Med. 174:625.
Selvakumar, A. et al. (1993) Immunogenetics 38:292.
Chen, C. et al. (1994) J. Immunol. 152:4929.
Freeman, G.J. et al. (1993) J. Exp. Med. 178:2185.
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.
CD80: A co-stimulator of T cell activation CD80 is a 60kD single chain type I transmembrane glycoprotein that is a member of the immunoglobulin family. CD80 is expressed on activated B- and T-lymphocytes, as well as a subpopulation of previously activated B-cells, but not on the majority of re... Read full blog post.
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