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Forms platelet plugs; releases chemicals necessary for blood clotting; important for hemostasis & live for 10-14 days
Lymphocyte (25% - 35%)
Produces antibodies and other chemicals responsible for destroying microorganisms; contributes to allergic reactions, graft rejection, tumor control, and regulation of immune system
Monocyte (3% - 9%)
Phagocytic cell in the blood; leaves the blood and becomes a macrophage, which phagocytizes bacteria, dead cells, cell fragments, and other debris within tissues
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