Characteristics of APCs. The data show representative expression of B7-1, B7-2, and MHC II on purified BALB/c splenic B cells (A), GMDCs (B), and FLDCs (C) as measured by flow cytometric analysis. The FLDCs were subdivided into pDCs (CD11c^intB220⁺) and cDCs (CD11c^hiB220⁻). Data in all panels are representative of at least 5 independent experiments.