Recombinant Mouse CCL12/MCP‑5 (Catalog # 428-P5) chemoattracts the BaF3 mouse pro‑B cell line transfected with human CCR2A in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Mouse CCL12/MCP‑5 (0.2 µg/mL) is neutralized (green line) by increasing concentrations of Mouse CCL12/MCP‑5 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF428). The ND50 is typically 0.8-4.0 µg/mL.