Inside your body there is an amazing protectio n mechanism called the immune system it is designed to defend you against millions of bacteria microbes . 10 amazing facts about your immune system the human body is an optimal environment for here are 10 amazing facts about the immune system 1. The main job of the human immune system is to protect the body from disease here are 11 interesting facts about the immune system you may not have known. Immune system the amazing human body 9780761430544 medicine health science books amazoncom
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