Recombinant Mouse CCL3/MIP‑1 alpha (Catalog #450-MA) chemoattracts BaF3 mouse pro‑B cell line transfected with human CCR5 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 MouseCCL3/MIP‑1 alpha (10 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse CCL3/MIP‑1 alpha Polyclonal Antibody (Catalog # AB-450-NA). The ND50 is typically 0.3-1 µg/mL.