What Role Do White Blood Cells Play in Immunity?

White blood cells, or leukocytes, are central to the body’s immune defense. They identify, target, and eliminate pathogens such as bacteria, viruses, fungi, and parasites. Different types perform specialized roles: neutrophils and macrophages engulf and destroy invaders; lymphocytes, including B cells and T cells, coordinate adaptive immunity by producing antibodies and killing infected cells; and eosinophils and basophils support responses to parasites and allergens. White blood cells also regulate inflammation and immune memory, enabling faster responses to future infections. In clinical care, effective antimicrobials such as those sourced through ceftriaxone injection wholesale channels support white blood cells by reducing pathogen load and aiding recovery.