Friday, July 13, 2012

3.Why is the immune system important for our body?

The immune system is a remarkably effective protection from bacterial infection. Therefore, disorders in the immune system can result in disease such as immunodeficiency, autoimmunity and hypersensitivity. Several genetic variations of important factors in immune system are associated to these diseases. However, the people with genetic variation induce not always these diseases. For example, allergic diseases are caused by inappropriate immunological responses to harmless antigens and genetic variations of immune system are associated to allergic disease, but not everyone who has the genetic variation become allergic disease. Thus the genetic variations affect to just prevalence of the disease and the other factors in our environment are also affect to develop the disease.

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