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1 Lymphocytes, neutrophils, and monocytes. 2  These white blood cells fight against invading bacteria, viruses, or fungi to help destroy infection. 3  Each of these cells differs in appearance. 4  Eosinophils and basophils.5  These white blood cells respond to allergens that can invade our bodies. Lymphocytes, neutrophils, and monocytes. 2  These white blood cells fight against invading bacteria, viruses, or fungi to help destroy infection. 3  Each of these cells differs in appearance. 4  Eosinophils and basophils.
Neutrophils. They kill and digest bacteria and fungi. They are the most numerous type of white blood cell and your first line of defense when infection strikes. Basophils. These small cells appear to sound an alarm when infectious agents invade your blood.ypes of white blood cells. Among your white blood cells are: Monocytes. They have a longer lifespan than many white blood cells and help to break down bacteria. Lymphocytes. They create antibodies to defend against bacteria, viruses, and other potentially harmful invaders.