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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.
An organism or specialized cell that engulfs and ingests other cells or particles. Phagocytes in vertebrate animals include white blood cells called macrophages, which help the body fight disease by breaking down foreign particles and bacteria.â¦ The process by which phagocytes engulf and break down bacteria or particles, as of food, is called phagocytosis (fÄgâ²É-sÄ«-tÅâ²sÄ­s).Single-celled organisms such as amoebas ingest food by the process of phagocytosis. See also: Blood and Blood Vessels. The process by which phagocytes engulf and break down bacteria or particles, as of food, is called phagocytosis (fÄgâ²É-sÄ«-tÅâ²sÄ­s). Single-celled organisms such as amoebas ingest food by the process of phagocytosis.