Surface receptor expression on DC subsets in different tissues. Expression of (A) MHC class I, (B) MHC class II, (C) CD86, (D) ICOSL, (E) CD40, (F) CXCR3, and (G) CCR5 on mDC1, mDC2, and pDC in bone marrow, peripheral blood, and tonsils. Mean values for at least 7 donors in at least 3 experiments are shown. *P < .05; **P < .005; ***P < .0005.