Why is phagocytosis so important to the human body?
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Not only does phagocytosis allow bodies to remove potentially deadly invaders, it is also important in the maintenance of healthy tissues. Without this mechanism, nonfunctional materials would accumulate and interfere with the body’s ability to function. A good example of the importance of phagocytosis is provided by the macrophages of the human spleen and liver, which dispose of more than 10 billion aged blood cells daily.