A type of white blood cell. It is the most abundant type of granulocytes and make up 40% to 70% of all white blood cells in humans. that plays an important role in acute inflammation. It migrates toward sites of infection or inflammation, through process called ‘chemotaxis’, and activate other immune cells by releasing cytokines. It is also capable of phagocytosis and degranulation of antimicrobial granules, playing key role as a part of innate immunity.