how do white blood cells attack diseases?

White blood cells come in many different forms, but they all have in common a function of protecting the body from foreign entities and from disease. Neutrophils, one of the body's main defenses against bacteria, specialize in phagocytosis, where the cell closes its membrane around a particle or other entity in the amniotic fluid. Other white blood cells, like granulocytes, travel around by ameboid movement and surround and destroy bacteria. White blood cells are aided in the hunt for foreign particles and harmful bacteria by platelets, which attach to intruders to alert white blood cells of their presence. This phagocytosis is one of the main functions of white blood cells, eating up bacteria and killing them with digestive enzymes, which is key to keeping out disease and fighting foreign bodies. Hope this helped