Description: Recognizes a protein of 130-140 kDa, identified as CD22 (also known as BL-CAM). CD22 expression is restricted to normal and neoplastic B cells and is absent from other haemopoietic cell types. In B-cell ontogeny, CD22 is first expressed in the cytoplasm of pro-B and pre-B cells, and on the surface as B cells mature to become IgD . It is not expressed by plasma cells, CD22 is found highly expressed in follicular mantle and marginal zone B-cells, and while germinal center B-cells are relatively weak. CD22 is a member of the immunoglobulin superfamily and serves as an adhesion receptor for sialic acid-bearing ligands expressed on erythrocytes and all leukocyte classes. It also associates with tyrosine kinases and play a role in signal transduction and B-cell activation. Primary antibodies are available purified, or with a selection of fluorescent CF® Dyes and other labels. CF® Dyes offer exceptional brightness and photostability. Note: Conjugates of blue fluorescent dyes like CF®405S and CF®405M are not recommended for detecting low abundance targets, because blue dyes have lower fluorescence and can give higher non-specific background than other dye colors.
Product Origin: Animal - Mus musculus (mouse), Bos taurus (bovine)
Conjugate: CF740
Concentration: 0.1 mg/mL
Storage buffer: PBS, 0.1% rBSA, 0.05% azide
Clone: RFB4
Immunogen: Human tonsil lymphocytes.
Antibody Reactivity: BL-CAM/CD22
References: Note: References for this clone sold by other suppliers may be listed for expected applications.
- Clin Cancer Res (2005) 11(21): 7920-7928. (Flow, surface; functional studies)
- Biomolecules (2020) 10: 1140. (oncotoxins)
Entrez Gene ID: 933
Expected AB Applications: Flow, surface (published for clone)/Functional studies (published for clone)
Z-Antibody Applications: Flow (verified)/Flow, surface (published)/Functional studies (published)
Verified AB Applications: Flow (verified)
Antibody Application Notes: ELISA: For coating, order antibody without BSA; Flow cytometry: 0.5-1 ug/million cells; Immunofluorescence: 0.5-1 ug/mL; Optimal dilution for a specific application should be determined./Higher concentration may be required for direct detection using primary antibody conjugates than for indirect detection with secondary antibody
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