The effect of the various chemokines on the migration of CD11b^−/dullCD11c⁺ and CD11b^+hiCD11c⁺ DC precursors. Optimal concentrations of chemokines (100 ng/mL), TNF- (10 ng/mL), and fMLP (10⁻⁷ mol/L) were tested as the ligand for chemotaxis. (▪) CD11b^−/dullCD11c⁺ DC precursors; (▩) CD11b^+hiCD11c⁺ DC precursors. The data represent the mean value ± SD of percentage. The results are representative of more than three experiments.