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Flow cytometric analysis of S100A9 (MRP-14) expression in human peripheral blood monocytes or granulocytes. Human peripheral blood was treated with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899) to lyse erythrocytes, washed, and then fixed and permeabilized with BD Cytofix/Cytoperm™ Fixation and Permeabilization Solution (Cat. No. 554722). The cells were washed and stained in BD Perm/Wash™ Buffer (Cat. No. 554723) with either PE Mouse IgG1, κ Isotype Control (Cat. No. 550617; dashed line histograms) or PE Mouse Anti-Human S100A9 (MRP-14) antibody (Cat. No. 565793; solid line histograms). The fluorescence histograms showing expression of S100A9 (MRP-14) or [Ig Isotype control staining] were derived from gated events with the forward and side light-scatter characteristics of viable human peripheral blood monocytes (Left Plot) or granulocytes (Right Plot). Flow cytometric analysis was performed using a BD LSRFortessa™ X-20 Flow Cytometer System.
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BD Pharmingen™ PE Mouse Anti-Human S100A9 (MRP-14)
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Regulatory Status Legend
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
Preparation And Storage
Product Notices
- This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- 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.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Source of all serum proteins is from USDA inspected abattoirs located in the United States.
- An isotype control should be used at the same concentration as the antibody of interest.
Companion Products





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The 1H9 monoclonal antibody specifically binds to S100 calcium binding protein A9 (S100A9), which is also known as Migration inhibitory factor-related protein 14 (MRP-14), Calgranulin-B (CAGB), Calprotectin L1H subunit, or Leukocyte L1 complex heavy chain. S100A9 is an ~14 kDa member of the S100 family of EF-hand calcium-binding proteins. S100A9 is expressed in granulocytes, monocytes, and some secretory epithelial cells. A soluble form of S100A9 can also be found in the serum. S100A9 functions as a chemoattractant for neutrophils and monocytes. S100A9 can associate with another S100 family member, S100A8 (also known as, MRP-8) to form a MRP-8/14 heterodimer called Calprotectin or Cystic fibrosis antigen (CFAG). The heterodimer has a wide range of functions, such as playing roles in arachidonic acid metabolism and stimulation of the innate immune system through its interaction with CD284 (Toll-like receptor 4/TLR4).

Development References (3)
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Hessian PA, Edgeworth J, Hogg N. MRP-8 and MRP-14, two abundant Ca(2+)-binding proteins of neutrophils and monocytes.. J Leukoc Biol. 1993; 53(2):197-204. (Biology). View Reference
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Kerkhoff C, Sorg C, Tandon NN, Nacken W. Interaction of S100A8/S100A9-arachidonic acid complexes with the scavenger receptor CD36 may facilitate fatty acid uptake by endothelial cells.. Biochemistry. 2001; 40(1):241-8. (Biology). View Reference
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Robinson MJ, Tessier P, Poulsom R, Hogg N. The S100 family heterodimer, MRP-8/14, binds with high affinity to heparin and heparan sulfate glycosaminoglycans on endothelial cells.. J Biol Chem. 2002; 277(5):3658-65. (Immunogen: ELISA, Radioimmunoassay, Western blot). View Reference
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