mAb 440c identifies IPCs in all immune organs and liver. Total cell populations from 129SvJ spleen, peripheral lymph nodes, thymus, bone marrow, blood, and liver were stained with 440c, Ly-6C, and CD11c. Plots represent gated 440c⁺ cells. Equal numbers of events were collected from spleen, thymus, lymph nodes, bone marrow, and liver.