Product Information

Contents: Phycoerythrin (PE) anti-mouse CD21/CD35 (CR2/CR1)
Catalog Number: 12-0211
Sizes: 50 ug, 100 ug, 200 ug
Formulation: Phosphate buffer pH 7.2,
150 mM NaCl, 0.09% NaN₃
Storage Conditions: Store at 4°C.
DO NOT FREEZE.
LIGHT-SENSITIVE MATERIAL.
Clone: eBio8D9 (8D9)
Isotype: Rat IgG2a, λ

Staining of BALB/c splenocytes with APC anti-mo/hu B220 (RA3-6B2) (cat. 17-0452) and .125 μg of PE Rat IgG2a Iso Cntrl (cat. 12-4321) (left) or .125 μg of PE anti-mouse CD21/CD35 (eBio8D9) (right). Cells in the lymphocyte gate were used for analysis.

Available Formats of This Product
Cat. No.	Format	Excite (nm)	Emit (nm)	Reported Applications
11-0211	Fluorescein isothiocyanate (FITC) anti-mouse CD21/CD35 (CR2/CR1)	488	518	FC
12-0211	Phycoerythrin (PE) anti-mouse CD21/CD35 (CR2/CR1)	488	575	FC
13-0211	Biotin anti-mouse CD21/CD35 (CR2/CR1)	N/A	N/A	FC
14-0211	Affinity Purified anti-mouse CD21/CD35 (CR2/CR1)	N/A	N/A	FA FC WB
16-0211	Functional Grade* Purified anti-mouse CD21/CD35 (CR2/CR1)	N/A	N/A	FA FC
*Functional Grade™ (FG™) Purified: Azide-free, sterile-filtered, and endotoxin < 0.001 ng/µg (unless otherwise noted). *Functional Grade™ (FG™) Biotin: Azide-free, sterile-filtered, and endotoxin < 0.05 ng/µg. Purified: Contains azide, not sterile-filtered, and not endotoxin tested.

Questions? Please consult our answers to frequently asked questions at http://www.ebioscience.com/faq.

Description

The monoclonal antibody eBio8D9 reacts with an eptiope shared by mouse CD21 (CR2) and CD35 (CR1). CD21 and CD35 are alternatively spliced transcripts from the Cr2 gene, which result in cell-surface proteins of 145 and 190 kDa, respectively. CD21 and CD35 are expressed by mature B cells, but not on thymocytes, peripheral T cells, erythrocytes or platelets. Furthermore, there is little evidence which demonstrates their expression on macrophages. CD21 is a receptor for complement component C3d and Epstein-Barr virus (EBV), and in association with CD19 and CD81, CD21 also participates in B-cell activation through the B cell receptor. Cr2 deficient mice display impaired inflammatory and humoral immune responses in vivo. The anti-mouse CD21/35 monoclonal antibody clones eBio4E3 and eBio8D9 do not cross-block each other suggesting that they bind to different epitopes.

Applications Reported

For research use only, not for diagnostic or therapeutic use. This 4E3 antibody has been reported for use in flow cytometric analysis.

Applications Tested

This eBio8D9 (8D9) antibody has been tested by flow cytometric analysis of mouse splenocytes. This can be used at less than or equal to 0.25 μg per million cells in a 100 μl total staining volume. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

References

Kozono Y, Abe R, Kozono H, Kelly RG, Azuma T, and Holers VM. 1998. Cross-linking CD21/CD35 or CD19 increases both B7-1 and B7-2 expression on murine splenic B cells. Journal of Immunology. 160: 1565-1572. (8D9, FA, PubMed)

Martin, B.K., and J.H. Weis. 1993. Murine macrophages lack expression of the Cr2-145 (CR2) and Cr2-190 (CR1) gene products. Eur. J. Immunol. 23: 3037-3042.

Related Products

Cat. 12-4321 PE Rat IgG2a Isotype Control