abnormal cell proliferation abnormal macrophage physiology abnormal macrophage proliferation 2013-05-06T15:38:29Z MP:0011985 MPheno.ontology anomaly in the ability of macrophages to undergo expansion by cell division; macrophages are large mononuclear phagocytes which differentiate from monocytes, are typically resident in a particular tissue, and capable of phagocytosing a variety of extracellular particulate material, including immune complexes, microorganisms, and dead cells csmith