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Biotin Rat Anti-CD11b
Biotin Rat Anti-CD11b
Flow cytometric analysis of expression of CD11b on bone-marrow myeloid cells. BALB/c bone-marrow leukocytes were stained with either Biotin Rat IgG2b, κ Isotype Control (Cat. No. 553987, left panel) or Biotin Rat Anti-CD11b (Cat. No. 553309/557395, right panel), followed by FITC Streptavidin (Cat. No. 554060). Please note that the population of cells having the lowest SSC (erythroid and lymphoid cells) show little expression of CD11b, while cells with moderate-to-high SSC (myeloid cells) are almost uniformly CD11b positive (right panel). The fluorescence contour plots were derived from gated events based on the light-scattering characteristics of viable leukocytes. Flow cytometry was performed on a BD FACScan™.
Flow cytometric analysis of expression of CD11b on bone-marrow myeloid cells. BALB/c bone-marrow leukocytes were stained with either Biotin Rat IgG2b, κ Isotype Control (Cat. No. 553987, left panel) or Biotin Rat Anti-CD11b (Cat. No. 553309/557395, right panel), followed by FITC Streptavidin (Cat. No. 554060). Please note that the population of cells having the lowest SSC (erythroid and lymphoid cells) show little expression of CD11b, while cells with moderate-to-high SSC (myeloid cells) are almost uniformly CD11b positive (right panel). The fluorescence contour plots were derived from gated events based on the light-scattering characteristics of viable leukocytes. Flow cytometry was performed on a BD FACScan™.
Product Details
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BD Pharmingen™
Itgam; Integrin alpha-M; Ly-40; Mac-1a; Mac-1 alpha; CR3A; CR-3 alpha chain
Mouse (QC Testing), Human (Tested in Development)
Rat DA, also known as DA/HA IgG2b, κ
Mouse Splenic Cells
Flow cytometry (Routinely Tested), Immunofluorescence (Reported)
0.5 mg/ml
16409
AB_394773
Aqueous buffered solution containing protein stabilizer and ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed.

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. An isotype control should be used at the same concentration as the antibody of interest.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  4. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  5. Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
  6. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
  7. Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
553309 Rev. 17
Antibody Details
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M1/70

The M1/70 monoclonal antibody specifically binds to CD11b, also known as Integrin alpha M (Itgam or αM). CD11b is a 170-kDa type 1 transmembrane glycoprotein and belongs to the Integrin alpha chain family. CD11b serves as the alpha chain of the heterodimeric Mac-1 integrin (CD11b/CD18, αMβ2), also known as complement receptor 3 (CR3). Mac-1 mediates adhesion to ICAM-1 (CD54), ICAM-2 (CD102), fibrinogen and binding to C3bi.  Mac-1 is expressed at varying levels on granulocytes, macrophages, myeloid-derived dendritic cells, natural killer cells, microglia, and B-1 B lymphocytes.  Mac-1 expression is rapidly upregulated on neutrophils after activation, in the same time period that CD62L (L-selectin) is shed from the cell surface.  The M1/70 antibody reportedly blocks cell adherence and C3bi binding but does not block cell-mediated lysis.  Cross-reaction of the M1/70 antibody with CD11b expressed on human monocytes, polymorphonuclear leukocytes, and NK cells has been reported.

553309 Rev. 17
Format Details
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Biotin
Biotin is a ubiquitous co-factor (also known as Vitamin B7) that has many properties that make it extremely useful for molecular biology. Biotin has an extremely high affinity for the Avidin family of proteins (Kd = 10-15 M), making it the perfect tool to link two molecules. Biotin labeled antibodies can be combined with any number of Avidin-conjugated probes in order to customize an assay to a particular need. This is especially useful in the case of magnetic cell separation using streptavidin/magnetic bead conjugates, or in the case of flow cytometry using streptavidin/fluorophore conjugates.
Biotin
553309 Rev.17
Citations & References
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Development References (10)

  1. Ault KA, Springer TA. Cross-reaction of a rat-anti-mouse phagocyte-specific monoclonal antibody (anti-Mac-1) with human monocytes and natural killer cells. J Immunol. 1981; 126(1):359-364. (Clone-specific). View Reference
  2. Beller DI, Springer TA, Schreiber RD. Anti-Mac-1 selectively inhibits the mouse and human type three complement receptor. J Exp Med. 1982; 156(4):1000-1009. (Biology: Blocking). View Reference
  3. Driver DJ, McHeyzer-Williams LJ, Cool M, Stetson DB, McHeyzer-Williams MG. Development and maintenance of a B220- memory B cell compartment. J Immunol. 2001; 167(3):1393-1405. (Biology: Fluorescence microscopy, Immunofluorescence). View Reference
  4. Kishimoto TK, Jutila MA, Berg EL, Butcher EC. Neutrophil Mac-1 and MEL-14 adhesion proteins inversely regulated by chemotactic factors. Science. 1989; 245(4923):1238-1241. (Biology). View Reference
  5. Lagasse E, Weissman IL. Flow cytometric identification of murine neutrophils and monocytes. J Immunol Methods. 1996; 197(1-2):139-150. (Methodology: Flow cytometry). View Reference
  6. Lub M, van Kooyk Y, Figdor CG. Competition between lymphocyte function-associated antigen 1 (CD11a/CD18) and Mac-1 (CD11b/CD18) for binding to intercellular adhesion molecule-1 (CD54). J Leukoc Biol. 1996; 59(5):648-655. (Biology: Immunoprecipitation). View Reference
  7. Sanchez-Madrid F, Simon P, Thompson S, Springer TA. Mapping of antigenic and functional epitopes on the alpha- and beta-subunits of two related mouse glycoproteins involved in cell interactions, LFA-1 and Mac-1. J Exp Med. 1983; 158(2):586-602. (Biology: Blocking, Immunoprecipitation, Western blot). View Reference
  8. Springer T, Galfre G, Secher DS, Milstein C. Mac-1: a macrophage differentiation antigen identified by monoclonal antibody. Eur J Immunol. 1979; 9(4):301-306. (Clone-specific: Immunoprecipitation). View Reference
  9. Springer T, Galfre G, Secher DS, Milstein C. Monoclonal xenogeneic antibodies to murine cell surface antigens: identification of novel leukocyte differentiation antigens. Eur J Immunol. 1978; 8(8):539-551. (Immunogen: Immunoprecipitation). View Reference
  10. Springer TA, Davignon D, Ho MK, Kurzinger K, Martz E, Sanchez-Madrid F. LFA-1 and Lyt-2,3, molecules associated with T lymphocyte-mediated killing; and Mac-1, an LFA-1 homologue associated with complement receptor function. Immunol Rev. 1982; 68:171-195. (Biology: Blocking). View Reference
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553309 Rev. 17

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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.