Monoclonal Anti-CD11b antibody produced in mouse

clone ICRF44, purified immunoglobulin, buffered aqueous solution

Monoclonal Anti-CD11b

Quality Level

biological source


antibody form

purified immunoglobulin

antibody product type

primary antibodies


ICRF44, monoclonal


buffered aqueous solution

mol wt

antigen 165-170 kDa

species reactivity



flow cytometry: 5 μL using 1 × 106 cells





UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... ITGAM(3684)

General description

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.
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.


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.

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.

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.


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Prenatal hypoxia may aggravate the cognitive impairment and Alzheimer?s disease neuropathology in APPSwe/PS1A246E transgenic mice
Zhang X, et al.
Neurobiology of Aging, 34(3), 663-678 (2013)
Liliane Fossati-Jimack et al.
PloS one, 8(2), e57082-e57082 (2013-03-02)
The CD11b/CD18 integrin (complement receptor 3, CR3) is a surface receptor on monocytes, neutrophils, macrophages and dendritic cells that plays a crucial role in several immunological processes including leukocyte extravasation and phagocytosis. The minor allele of a non-synonymous CR3 polymorphism...
L Knopfova et al.
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HMGB1 promotes differentiation syndrome by inducing hyperinflammation via MEK/ERK signaling in acute promyelocytic leukemia cells
Tang L, et al,
Oncotarget, 8(16), 27314-27314 (2017)
Romualdas Stapulionis et al.
Journal of immunology (Baltimore, Md. : 1950), 180(6), 3946-3956 (2008-03-07)
Multiple sclerosis (MS) is an inflammatory disease where phagocytic cells infiltrate the nerve tissue and act as terminal agents in destruction of the myelin sheath. However, the mechanism that triggers the ability of these cells to recognize myelin remains obscure....

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