Effect of PTX on CCL19-induced dendritic extension of mature DCs.

BC1 cells were activated by LPS and used as mature DCs. The mature DCs were pretreated with PTX (100 ng/mL) for 2 hours and then incubated with CCL19 (20 ng/mL) for 2 hours. The morphologic changes were analyzed by invert microscopy (original magnification × 20). The results are representative of 4 independent experiments (A). Each column represents the mean ± SE of 4 independent experiments (B).