Recombinant Human XCL1/Lymphotactin (Catalog # 695-LT) chemoattracts the BaF3 mouse pro-B cell line transfected with human XCR1 in a dosdependent 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 Human XCL1/Lymphotactin (0.5 μg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human XCL1/Lymphotactin Antigen Affinity-purified Polyclonal Antibody (Catalog # AF695). The ND50 is typically 10-30 µg/mL.