Transplant rejection
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Summary
Transplant rejection is a process by which the immune system of a recipient's body recognizes and attacks a transplanted organ or tissue as foreign, resulting in its damage or destruction. This process occurs due to the activation of the recipient's immune system, which recognizes the transplanted organ or tissue as a foreign invader and initiates an immune response to eliminate it. Transplant rejection can occur immediately after transplantation or can develop over a long time. Immunosuppressive drugs are used to prevent and treat transplant rejection, but these medications can have side effects such as an increased risk of infections.