What is the primary function of white blood cells?

The primary function of white blood cells is to fight infection. These cells are a crucial component of the immune system and are responsible for identifying, attacking, and destroying pathogens such as bacteria, viruses, and other harmful microorganisms. They perform various roles, including the production of antibodies, phagocytosis (engulfing and digesting pathogens), and coordinating the body's immune response to infection. This protective function is essential for maintaining health and preventing illness, highlighting the importance of white blood cells in the body's defense mechanisms.