• Species Reactivity

  Mouse

• Specificity

  Detects mouse B220/CD45R in flow cytometry.

• Source

  Monoclonal Rat IgG    _2A Clone # RA3-6B2

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Abelson mouse leukemia virus-induced pre-B tumor cells

• Formulation

  Supplied in a saline solution containing BSA and Sodium Azide. *Small pack size (SP) is supplied as a 0.2 μm filtered solution in PBS.

• Label

  Alexa Fluor 405

Applications

• Recommended    
  Concentration

  Sample

• Flow Cytometry

  5 μL/10    ⁶ cells

  See below

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Shipping

  The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Protect from light.    Do not freeze.    

• 12 months from date of receipt, 2 to 8 °C as supplied.

Background: B220/CD45R

B220 is the mouse CD45 isoform CD45R, which is predominantly expressed on all B lymphocytes, including pro-, mature and activated B cells. The level of B220 antigen expression on cells of the B cell lineage is developmentally regulated, and the antibody described here is commonly used to identify this B cell marker. RA3-6B2 has been reported to inhibit   in vivo B cell responses. The extracellular region of mouse B220 shares 41% amino acid sequence identity with the extracellular region of human CD45.

• Long Name:

  Cluster of Differentiation 45

• Entrez Gene IDs:

  5788 (Human); 19264 (Mouse); 24699 (Rat)

• Alternate Names:

  B220; CD45 antigen; CD45R; EC 3.1.3.48; L-CA; LY5; protein tyrosine phosphatase, receptor type, C; receptor-type tyrosine-protein phosphatase C; T200 glycoprotein; T200 leukocyte common antigen; T200receptor type, c polypeptide