Recombinant Mouse CXCL4 (PF4)

Platelet factor 4 (PF4/CXCL4) is an ELR_ tetrameric, cationic chemokine that constitutes 25% of the protein in platelet _-granules. It is also found bound to the luminal vascular endothelial surface. Although platelets represent the primary source of PF4, it is also expressed at lower levels in other cells of the immune system including cultured T cells, monocytes, and endothelial and smooth muscle cells.