Monocytes are cells
belonging to the family of white blood cells
, they are also representatives of larger size. Like many blood
cells, monocytes are made by an organic tissue in certain bones, the bone marrow
. The role of monocytes is mainly that of immune defense: they are located in the bloodstream and enable the destruction of bacteria and some viruses. These are the main actors in phagocytosis after their transformation into phagocytes, the mechanism by which the cell absorbs unwanted microorganisms to destroy them. Another of their duties is, after specific recognition of an aggressor, to alert other cells of the nature of the attacker to cause a more specific defense reaction.