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Answer:

A body attacks a transplanted organ because it does not recognize it as being made of self cells. It knows this because the new organ has antigens, a form of proteins that coat the organ. When a body's immune system recognizes these antigens and they are not similar enough to the body's own antigen's, it attacks to try and keep itself safe and healthy.

Explanation:

Answer:

A transplanted organ is viewed by our bodies immune system as a foreign object, much like when we get sick. Our body is just trying to protect itself. For this reason people that have a transplant have to take immunosuppression medication for the rest of their lives.

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