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The immune system is a complicated mechanism whose principle actors are organs, cells, chemicals and a vast collection of proteins tuned by billions of years of evolution to work in a harmonious manner for the good of the whole. Its purpose is to keep us alive in a world where visible and invisible predators intending to usurp our bodies attack us on a daily basis. <br><br>By virtue of an amazing communication network, millions of cells gather, exchange information, become activated and respond to bacteria, fungi, parasites and viruses preventing them from causing infection. <br><br>A malfunctioning immune system, when immune cells attack "self," results in numerous auto-immune diseases, the "God only knows" diseases of sixty years ago. |
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