Ontogeny and functional specialization of dendritic cells in human and mouse/Muzlifah Haniffa, Matthew Collin, and Florent Ginhoux -- Dendritic cell migration through the lymphatic vasculature to lymph nodes/Andrew M. Platt and Gwendalyn J. Randolph -- A close encounter of the third kind: monocyte-derived cells/Alexander Mildner, Simon Yona, and Steffen Jung -- Plasmacytoid dendritic cell development/Ken Shortman, Pryianka Sathe, David Vremec, Shalin Naik, and Meredith O'Keefe -- Pathological consequence of misguided dendritic cell differentiation in histiocytic diseases/Marie-Luise Berres, Carl E. Allen, and Miriam Merad -- Macrophage activation and polarization as an adaptive component of innate immunity/Massimo Locati, Alberto Mantovani, and Antonio Sica -- Terminal differentiation of dendritic cells/Cyril Seillet and Gabrielle T. Belz -- Diversity of pathogen sensors in dendritic cells/Silvia Cerboni, Matteo Gentili, and Nicolas Manel -- Transcriptional control of dendritic cell development/Kenneth M. Murphy -- Transcriptional control of macrophage identity, self-renewal, and function/Kaaweh Molawi and Michael H. Sieweke