are one of the three types of neutral white blood cells
, also called leukocytes. They are also qualified as phagocytes, due to their capacity to destroy microbes and bacteria by swallowing them. By liberating granules, they also serve to limit the spread of inflammation caused by infection
. There are many of them in the body
, yet they have a short life-span of only around 12 hours. If there are not enough of these granulocytes
in the body, the condition is called neutropenia, and is congenital or acquired.