CCL19-induced rapid dendritic extension of mature DCs.

BC1 cells were activated by LPS and used as mature DCs. The mature DCs were treated with CCL19 or CCL21 for 1 hour, and then the morphologic changes were analyzed by confocal microscopy (original magnification × 50 in panel A; pictures further magnified as indicated in panel B). The results are representative of at least 3 independent experiments.