MCP-1/CCL2 (human) acts as a ligand for CCR2, triggering a potent chemotactic response and intracellular calcium mobilization upon CCR2 binding. It specifically attracts monocytes and basophils while sparing neutrophils and eosinophils. Animal-Free MCP-1/CCL2 Protein, Human (His) is the recombinant human-derived animal-FreeMCP-1/CCL2 protein, expressed by E. coli , with N-His labeled tag. This product is for cell culture use only.