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Unformatted text preview: dead neutrophils. The macrophages also eventually die and contribute to the formation of pus. Phagocytosis is essential to body defense. Unfortunately, a number of things can suppress it: Genetic defects Old age Anti-rejection drugs in transplant recipients Radiation AIDS Cancer 3. T ISSUE REPAIR---repair cannot proceed well until microbes as well as dead or damaged tissue have been removed by phagocytes. Tissues vary in their ability to replace dead cells with new cells of the same type, which is called regeneration. If scar tissue makes up most of the repair, some function will be lost....
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- Fall '09