Calprotectin Monoclonal Antibody (MAC387)

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Product Description

This product requires protein digestion pre-treatment of paraffin sections using trypsin or pronase. A suggested positive control for immunohistochemical applications is human spleen. For FACS analysis, use 10 µL of the suggested working dilution to label 1x10^6 cells in 100 µL. This product is a low-endotoxin, preservative-free formulation. Endotoxin level is <0.01EU/ug. Mouse anti Human macrophages, clone MAC387 recognizes the L1 or Calprotectin molecule, an intracytoplasmic antigen comprised of a 12 kDa alpha chain and a 14 kDa beta chain. The S100A8/A9 heterocomplex, also called MRP-8/MRP-14 complex or calprotectin, comprises 60% of the cytoplasmic protein fraction of circulating polymorphonuclear granulocytes and is also found in monocytes, macrophages and ileal tissue eosinophils. Peripheral blood monocytes carry the antigen extra- and intracellularly, neutrophils only intracellularly. The S100A8/A9 complex has antibacterial, antifungal, immunomodulating and antiproliferative effects. Besides this it is a potent chemotactic factor for neutrophils. Plasma concentrations are elevated in diseases associated with increased neutrophil activity, like inflammatory bowel disease. Granulocytes terminate their existence after transmigration through the intestinal wal