• Product name
    Anti-CD11b antibody [M1/70] (FITC)
    See all CD11b primary antibodies
  • Description
    Rat monoclonal [M1/70] to CD11b (FITC)
  • Conjugation
    FITC. Ex: 493nm, Em: 528nm
  • Specificity
    Alpha M subunit (Mr 170 kDa) of the CD11b/CD18 heterodimer.
  • Tested applications
    Suitable for: Flow Cyt, IHC-Fr, Blocking, IPmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rabbit
  • Immunogen

    Tissue/ cell preparation (Mouse): C57BL/10 mouse splenic T cells and concanavaline A-activated C57BL/10 splenocytes.

  • Positive control
    • BLAB/c spleen cells.



Our Abpromise guarantee covers the use of ab24874 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Flow Cyt Use at an assay dependent concentration.

ab136125-Rat monoclonal IgG2b, is suitable for use as an isotype control with this antibody.

IHC-Fr Use at an assay dependent concentration.
Blocking Use at an assay dependent concentration.
IP Use at an assay dependent concentration.


  • Function
    Integrin alpha-M/beta-2 is implicated in various adhesive interactions of monocytes, macrophages and granulocytes as well as in mediating the uptake of complement-coated particles. It is identical with CR-3, the receptor for the iC3b fragment of the third complement component. It probably recognizes the R-G-D peptide in C3b. Integrin alpha-M/beta-2 is also a receptor for fibrinogen, factor X and ICAM1. It recognizes P1 and P2 peptides of fibrinogen gamma chain.
  • Tissue specificity
    Predominantly expressed in monocytes and granulocytes.
  • Involvement in disease
    Genetic variations in ITGAM has been associated with susceptibility to systemic lupus erythematosus type 6 (SLEB6) [MIM:609939]. Systemic lupus erythematosus (SLE) is a chronic, inflammatory and often febrile multisystemic disorder of connective tissue. It affects principally the skin, joints, kidneys and serosal membranes. It is thought to represent a failure of the regulatory mechanisms of the autoimmune system.
  • Sequence similarities
    Belongs to the integrin alpha chain family.
    Contains 7 FG-GAP repeats.
    Contains 1 VWFA domain.
  • Domain
    The integrin I-domain (insert) is a VWFA domain. Integrins with I-domains do not undergo protease cleavage.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • antigen CD11b (p170) antibody
    • Antigen CD11b p170 antibody
    • CD11 antigen like family member B antibody
    • CD11 antigen-like family member B antibody
    • CD11b antibody
    • CD11b/CD18 antibody
    • CD49d antibody
    • Cell surface glycoprotein MAC-1 subunit alpha antibody
    • Complement component 3 receptor 3 subunit antibody
    • Complement Component Receptor 3 Alpha antibody
    • Complement receptor type 3, alpha subunit antibody
    • CR 3 alpha chain (CR3A) antibody
    • CR 3 alpha chain antibody
    • CR-3 alpha chain antibody
    • CR3 antibody
    • CR3A antibody
    • F730045J24Rik antibody
    • Integrin Alpha M antibody
    • Integrin alpha M chain antibody
    • Integrin alpha-M antibody
    • Integrin beta 2 alpha subunit antibody
    • Integrin subunit alpha M antibody
    • integrin, alpha M (complement component 3 receptor 3 subunit) antibody
    • ITAM_HUMAN antibody
    • ITGAM antibody
    • Leukocyte adhesion receptor MO1 antibody
    • Ly-40 antibody
    • MAC 1 antibody
    • Mac-1a antibody
    • MAC1 antibody
    • Mac1, alpha subunit antibody
    • MAC1A antibody
    • Macrophage antigen alpha polypeptide antibody
    • MGC117044 antibody
    • Mo1, alpha subunit antibody
    • MO1A antibody
    • Neutrophil adherence receptor alpha M subunit antibody
    • Neutrophil adherence receptor antibody
    • SLEB6 antibody
    see all

Anti-CD11b antibody [M1/70] (FITC) images

  • Immunohistochemistry (Frozen sections) analysis of mouse liver tissue sections labeling CD11b with ab24874 at 1/200 dilution. The tissue was fixed with OCT and blocked with 2% BSA for 1 hour at 23°C, followed by incubation with Anti-CD11b antibody [M1/70] (FITC) (ab24874) (1/200 dilution) for 16 hours at 4°C.

    See Abreview

  • Flow Cytometry analysis of C57Bl/6 bone marrow cells labeling CD11b with ab24874 at 0.5µg (solid line), Rat IgG2b (FITC)isotype control (dashed line) at 0.5µg concentration.

  • ab24874 at 1 µg/106 cells staining BALB/c splenocytes. Cells were then double stained with Rat monoclonal [RB6-8C5] to Ly6g (Phycoerythrin) (ab24884).  Lymphocytes were gated and analyzed by flow cytometry.

References for Anti-CD11b antibody [M1/70] (FITC) (ab24874)

This product has been referenced in:
  • Liu T  et al. Gr-1+CD11b+ cells facilitate Lewis lung cancer recurrence by enhancing neovasculature after local irradiation. Sci Rep 4:4833 (2014). IHC-Fr ; Mouse . Read more (PubMed: 24776637) »
  • Gil M  et al. Surfactant Protein A Modulates Cell Surface Expression of CR3 on Alveolar Macrophages and Enhances CR3-mediated Phagocytosis. J Biol Chem 284:7495-504 (2009). Flow Cyt . Read more (PubMed: 19155216) »

See all 3 Publications for this product

Product Wall

Immunohistochemistry (Frozen sections)
Mouse Tissue sections (liver)
Blocking step
BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 2% · Temperature: 23°C

Abcam user community

Verified customer

Submitted Dec 16 2015

Abcam guarantees this product to work in the species/application used in this Abreview.
Flow Cytometry
Mouse Cell (splenocytes)
Cell harvesting/tissue preparation method: cell suspension
Sample buffer: PBS
Gating Strategy
Live cells

Abcam user community

Verified customer

Submitted May 19 2010


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