Reference Terms
from Wikipedia, the free encyclopedia

Transplant rejection

Transplant rejection occurs when the immune system of the recipient of an transplant attacks the transplanted organ or tissue.

This is because a normal healthy human immune system can distinguish foreign tissues and attempts to destroy them, just as it attempts to destroy infective organisms such as bacteria and viruses.

Note:   The above text is excerpted from the Wikipedia article "Transplant rejection", which has been released under the GNU Free Documentation License.
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