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  • C0551 - Monoclonal Anti-CD11b antibody produced in mouse

C0551 Sigma-Aldrich

Monoclonal Anti-CD11b antibody produced in mouse

clone ICRF44, purified immunoglobulin, buffered aqueous solution

Synonym: Monoclonal Anti-CD11b

  •  NACRES NA.41



Related Categories Alphabetical Index, Analytical Cytology, Antibodies, Antibodies for Cell Biology, Antibodies for Hematopoietic Stem Cells,
conjugate   unconjugated
clone   ICRF44, monoclonal
biological source   mouse
application(s)   flow cytometry: 5 μL using 1 × 106 cells
species reactivity   human
mol wt   antigen 165-170 kDa
form   buffered aqueous solution
shipped in   wet ice
storage temp.   2-8°C
antibody form   purified immunoglobulin
isotype   IgG1
antibody product type   primary antibodies
UniProt accession no.   P11215
Gene Information   human ... ITGAM(3684)


General description

CD11b is also known as Mac-1, CR3, MO-1 and C3bi receptor. It belongs to β 2 integrin family. The gene encodes the integrin α M chain. It is expressed on the surface of circulating monocytes, granulocytes, neutrophils, macrophages, dendritic cells and certain NK cells. It is present in subcellular granules in granulocytes and on subsets of macrophages.

Monoclonal anti-Human CD11b antibody (mouse IgG1 isotype) is derived from the hybridoma produced by the fusion of mouse myeloma cells and splenocytes from BALB/c mice immunized with human monocytes.


Recognizes the CD11b α-chain of the human CD11b/CD18 complex. The antibody is useful for studies on cell adhesion and migration and for the detection of leukocyte adhesion deficiencies. It may be used to stain acetone-fixed cryostat sections or cell preparations. The epitope recognized by the antibody is formalin sensitive.
2nd Workshop: code no. M104
3rd Workshop: code no. 202 and 238
4th Workshop: code no. M47


human monocytes.


Monoclonal Anti-CD11b antibody produced in mouse has been used in immunostaining and flow cytometry.

Target description

CD11b α-chain of the human CD11b/CD18 complex is an α/β heterodimeric glycoprotein which belongs to the β2 integrin family. It is also known as Mac-1, CR3, MO-1 and C3bi receptor. CD11b is expressed on the surface of circulating monocytes, granulocytes and certain NK cells and is also present in subsets of macrophages. It functions as a receptor for iC3b, clotting factor X, fibrinogen and ICAM-1.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

CD11b/CD18 acts as a receptor for C3bi, clotting factor X, fibrinogen and ICAM-1. It is involved in cell-cell and cell-substrate interactions. It plays a crucial role in several immunological processes as well including leukocyte extravasation and phagocytosis. It also plays an important role in certain coagulation protease cascade and in cell migration.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy

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