This organ which is extended all over the body, involves itself in the fight against millions of foreign chemical substances and bacteria that invade our body and tries to protect it. And this fight goes in as long as one’s life lasts. You must have clearly known which cells belong to our body and which cells do not belong to it. When these cells that are foreign to us- for example, the bacteria – try to get into our body, the immune system at once reacts and produces antibodies or it may stimulate such cells as would directly fight and eliminate those-causing germs. The following are the organs functioning in the immune system: Thymus gland, Bonne marrow, Lymph nodes, Lymphatic vessels, Spleen.
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