Granulocytes are a group of four types of white blood cell which are distinguished by the presence of granules in the cytoplasm (the liquid inside of the cell) and a cell nucleus which is usually found with three lobe segments. They are further distinguished by their appearance when stained. The three types are:
All of the granulocytes are created in the bone marrow.
Each of the granulocytes acts on foreign bodies in a different way and can release antimicrobial agents, enzymes, acidic compounds, nitric oxide and hydrogen peroxide.