NCIt definition : A cell that arises from stem cells and/or bone marrow-derived monocytes that function
in different aspects of host defense and tissue repair; such as phagocytosis, cytotoxic
activity, and regulation of the immune response (antigen presentation and T-cell activation).;
Alternative definition : NCI-GLOSS: A type of white blood cell that surrounds and kills microorganisms, removes
dead cells, and stimulates the action of other immune system cells.;