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CD11b Antibody (M1/70.15) - BSA Free

Catalog # NB600-1327 | Novus Biologicals a Bio-Techne Brand
Catalog #
Size / Price

Key Product Details

Validated by

Biological Validation

Species Reactivity

Human, Mouse, Rabbit


CyTOF-ready, Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Immunoprecipitation



Antibody Source

Monoclonal Rat IgG2b Lambda Clone # M1/70.15


BSA Free


1.0 mg/ml

Product Summary for CD11b Antibody (M1/70.15) - BSA Free


Rat Monoclonal CD11b Antibody (M1/70.15) was made to T cell enriched splenocytes from B10 mice.

Reactivity Notes

Mouse reactivity reported in a verified customer review. Rabbit reactivity reported in scientific literature (PMID: 28700779). Human reactivity reported in scientific literature (PMID: 28683563).


Microglia Marker, Myeloid Marker






IgG2b Lambda

Theoretical MW

127.2 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for CD11b Antibody (M1/70.15) - BSA Free

Immunohistochemistry: CD11b Antibody (M1/70.15) [NB600-1327] - Immunohistochemical analysis of frozen lymph node section using CD11b Antibody (M1/70.15) [NB600-1327] followed by staining with HRP-conjugated secondary antibody.
Immunocytochemistry/Immunofluorescence: CD11b Antibody (M1/70.15) [NB600-1327] - Characterization of microglia cultures by multiple staining with CD11b Antibody (M1/70.15) [NB600-1327] (panels a. & c.) and anti GFAP (panels b & d). Nuclei appear blue due to 4',6-diamidino-2-phenylindole (DAPI) counter staining.
Flow Cytometry: CD11b Antibody (M1/70.15) [NB600-1327] - A surface stain was performed on Raw264.7 cells with CD11b (M1/70.15) Antibody [NB600-1327R] (blue) and a matched isotype control (orange), both conjugated to DyLight 550. Cells were incubated in an antibody dilution of 5 ug/mL for 20 minutes at room temperature.

Applications for CD11b Antibody (M1/70.15) - BSA Free

Recommended Usage

Flow Cytometry

1:50. Use reported in scientific literature (PMID 28683563)

Immunocytochemistry/ Immunofluorescence

1:10-1:500. Use reported by customer review




1:10-1:500. Use reported in scientific literature


1:10-1:500. Use reported in scientific literature (PMID 28700779)


Application Notes
IHC-P: Perform enzymatic antigen retrieval before commencing with IHC staining protocol. NB600-1327 has been reported to as being suitable for use on PLP fixed paraffin embedded tissue but has not been tested for use on formalin fixed tissue. This antibody is CyTOF ready.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 2 reviews rated 5 using NB600-1327 in the following applications:

Published Applications

Read 19 publications using NB600-1327 in the following applications:

Formulation, Preparation, and Storage


Protein G purified




BSA Free


0.02% Sodium Azide


1.0 mg/ml


The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: CD11b/Integrin alpha M

CD11b (integrin alpha M subunit) is a type I transmembrane glycoprotein. CD11b combines with the Integrin beta 2 subunit (CD18) to form the non-covalent heterodimer Integrin alpha M/beta 2, also known as Mac-1 and complement receptor type 3 (CR3). The CD11b/CD18 (Mac-1) heterodimer has a theoretical molecular weight of 127kDa but is often observed near 170kDa due to post translational modifications. Integrins are transmembrane proteins that mediate interactions between adhesion molecules on adjacent cells and/or the extracellular matrix. Integrins have diverse roles in several biological processes, including cell migration during development, wound healing, cell differentiation, and apoptosis. The particular integrin CD11b is known as a pro-inflammatory molecule given its ability to promote phagocyte cytotoxic functions while enhancing several effector molecules such as FcGR, uPAR, and CD14 (1). In macrophages, CpG-DNA stimulates lysosomal degradation and vacuolar acidification, subsequently promoting CD11b release via TLR9 (2). During an acute infection, high CD11b/Mac-1 expression on antigen-specific CD8 (+) T cells can signify recent activation of the immune system, whereas naive T cells and virus-specific memory CD8 (+) T cells express little or no Mac-1 when exposed to a virus (3). Variations at the ITGAM gene, which encodes for the CD11b chain of the Mac-1 integrin, is one of the main genetic risk factors involved in systemic lupus erythematosus /SLE disorder (4).


1. Rosetti, F., & Mayadas, T. N. (2016). The many faces of Mac-1 in autoimmune disease. Immunol Rev, 269(1), 175-193. doi:10.1111/imr.12373

2. Kim, D., Kim, T. H., Wu, G., Park, B. K., Ha, J. H., Kim, Y. S., . . . Kwon, H. J. (2016). Extracellular Release of CD11b by TLR9 Stimulation in Macrophages. PLoS One, 11(3), e0150677. doi:10.1371/journal.pone.0150677

3. Christensen, J. E., Andreasen, S. O., Christensen, J. P., & Thomsen, A. R. (2001). CD11b expression as a marker to distinguish between recently activated effector CD8(+) T cells and memory cells. Int Immunol, 13(4), 593-600. doi:10.1093/intimm/13.4.593

4. Nath, S. K., Han, S., Kim-Howard, X., Kelly, J. A., Viswanathan, P., Gilkeson, G. S., . . . Harley, J. B. (2008). A nonsynonymous functional variant in integrin-alpha(M) (encoded by ITGAM) is associated with systemic lupus erythematosus. Nat Genet, 40(2), 152-154. doi:10.1038/ng.71

Alternate Names

CD11b, Integrin alpha M, ITGAM, cd11b flow antibody, M1/70, M1/70 cd11b, m1/70 clone, M1/70.15 Antibody, M1/70.15 CD11b, M1/70.15 CD11b Antibody, M1/70.15 Clone, M1/70.15 Conjugated, M1/70.15 ICC Antibody, M1/70.15 IHC Antibody, M1/70.15 Immunocytochemistry Antibody, M1/70.15 Immunohistochemistry Antibody, M1/70.15 Microglia Marker, M1/70.15 Myeloid Marker

Entrez Gene IDs

3684 (Human); 16409 (Mouse)

Gene Symbol



Product Documents for CD11b Antibody (M1/70.15) - BSA Free

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for CD11b Antibody (M1/70.15) - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.


FAQs for CD11b Antibody (M1/70.15) - BSA Free

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  • Q: I am looking for a Mac-1 (microglia cell marker) antibody to do immunostaining with my mouse brain and I checked, you have a lot of antibodies for this biomarker. I don't know which one is the best to be used for immunohistology on mouse brain tissue. Could you please help with this?

    A: I would recommend NB110-89474. This antibody has been published in 11 scientific articles, including several times in IHC in mouse. As long as CD11b is expressed in your sample, it should work just fine and is backed by our 100% Novus Guarantee.

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