The immune system is complex intricate and interesting and there are at least two good reasons for you to know more about it first it is just plain fascinating to understand where things like fevers hives inflammation etc come from when they happen inside your own body. The immune system protects the body from harmful influences in the environment like a guard and is vitally important for the body it is made up of different organs cells and proteins aside from the nervous system it is the most complex system in the human body. The immune system defends our body against invaders such as viruses bacteria and foreign bodies the white blood cells are a key component here we explain how it works and the cells organs . How the immune system works the immune system is your bodys natural defense system its an intricate network of cells tissues and organs that band together to defend your body against . Through a series of steps called the immune response the immune system attacks organisms and substances that invade body systems and cause disease the immune system is made up of a network of cells tissues and organs that work together to protect the body
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