* Neutrophils: These are the most abundant white blood cells and are the first responders to infection. They engulf and destroy bacteria, fungi, and other pathogens.

* Macrophages: These are large phagocytes that develop from monocytes. They are found in tissues throughout the body and are involved in both innate and adaptive immunity. They engulf and destroy pathogens, cellular debris, and foreign particles.

* Eosinophils: These are less common white blood cells that play a role in fighting parasitic infections and allergic reactions. They can also phagocytize parasites and immune complexes.

Note: While lymphocytes (B cells and T cells) are important components of the immune system, they are not directly phagocytic. Their primary functions are to recognize and respond to specific antigens.