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The mononuclear phagocyte system constitutes macrophage cells spread throughout the human body. The macrophages are long-lived cells that provide a major defense system against hostile elements through phagocytosis and subsequent intracellular destruction of the particle or cell.
The immune system attacks foreign invaders in your body, but it doesn't always recognize cancer cells as enemies. A monoclonal antibody can be directed to attach to certain parts of a cancer cell. In this way, the antibody marks the cancer cell and makes it easier for the immune system to find.he cancer cells then ingest the antibody, which releases a few molecules of chemotherapy. The chemotherapy only damages the cancer cells, leaving the surrounding healthy cells undamaged. A number of monoclonal antibody drugs are available to treat various types of cancer.