Human macrophage/monocyte chemotactic protein-4 (MCP-4) is a member of the beta chemokine family (C-C) of cytokines. Like eotaxin, MCP-4 is a powerful eosinophil chemoattractant. Additionally, like MCP-3, MCP-4 elicits chemoattraction of monocytes and T lymphocytes.||Source:|Recombinant protein corresponding to 75aa residues from human MCP-4, expressed in E. coli. ||Molecular Weight: |~8.6kD||Biological Activity:|Determined by the ability of MCP-4 to chemoattract human monocytes was achieved at 10-100ng/ml.||Endotoxin:|<0.1ng/ug||Storage and Stability:|Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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