Modulation of DC subtypes before and after ECP treatment.

(A) At baseline, PBMCs were stained with CD80, CD123 (DC1) and CD83, CD86 (DC2). DC subpopulations were gated and analyzed by FACScan. Pre-ECP (dark-filled peaks); post-ECP (outlined peaks). (B) At 6 months of ECP treatment. (C) At last cycle of ECP treatment.