Monocytes and macrophages are myeloid cells that have important innate immune functions. Macrophages reside in tissues and respond to infection by producing inflammatory mediators and engulfing ...

Osteoclasts derive from a myeloid progenitor that gives rise to both the monocyte-macrophage lineage and the osteoclast lineage. A mononuclear pre-osteoclast exists that expresses both TRAP and CTR.