Phenotypic profile of PBDCs generated from MM patients versus normal donors. PBDCs were generated by culture of PBDCs from MM patients and normal donors for 8 to 10 days in the presence of GM-CSF and IL-4. Phenotype was determined by indirect immunofluorescence flow cytometry with MoAbs specific for CD14, CD40, CD54, CD80, CD86, and HLA-DR developed with goat anti-mouse FITC antibody for MM PBDCs (A) and normal donor PBDCs (B).