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Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
Expression of CD138 on mouse bone-marrow B lymphocytes. C57BL/6 bone-marrow leukocytes were simultaneously stained with PE-conjugated 281-2 mAb (Right panel) and FITC-conjugated RA3-6B2 mAb (anti-CD45R/B220, Cat. No. 553087/553088, both panels). Flow cytometry was performed on a BD FACScan™ Flow Cytometry System.
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The 281-2 monoclonal antibody specifically binds to the core protein of CD138 (Syndecan-1), a cell-surface, integral membrane heparan sulfate- and chondroitin sulfate-containing proteoglycan that binds to interstitial extracellular matrix molecules. Syndecan-1 is predominantly expressed on epithelial cells, where its expression correlates with normal epithelial organization. It is also expressed on B lymphocytes at specific stages during their differentiation: precursor B cells in the bone marrow, and antibody-secreting cells including plasma cells (but not mature peripheral B cells). It is thus implicated in mediating B cell-matrix interactions. CD138 expression is also regulated during embryonic development, and the molecule shows a tissue- specific structural polymorphism resulting from different post-translational modifications. The 281-2 antibody may be used to detect the differently glycosylated forms, because it reacts with the core protein. Furthermore, the mAb detects the Syndecan-1 ectodomain which is cleaved from cell surfaces by a metalloproteinase.
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Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims. Comparisons are not made against non-BD technologies, unless otherwise noted.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.