Fig. 1.
Detection of fractions of peripheral blood dendritic cells (PBDCs). The DC-enriched population was stained with fluorescein isothiocyanate (FITC)-labelled anti-CD11c monoclonal antibodies (mAbs), phycoerythrin (PE)-labelled mAbs against lineage markers (CD3, CD14, CD15, CD16 and CD19) (lin) and peridinin chlorophyll (PerCP)-labelled anti-human leucocyte antigen D-related (HLA-DR) mAbs. (a) DCs were detected as lin-/HLA-DR+ fraction [designated as region 1 (R1)]. (b) Two fractions of DCs were identified, with phenotypes of CD11c+/lin-/HLA-DR+ (myeloid DC; R2), CD11c-/lin-/HLA-DR+ (plasmacytoid DC; R2). Absolute numbers of PBDCs (/ml) were calculated by multiplying the percentage of lin-/HLA-DR+ fraction (designated R1) within total flow cytometry events by the peripheral blood mononuclear cell (PBMC) count after negative selection (/ml).