Rejection of transplanted organs is due to
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Hyperacute rejection occurs a few minutes after the transplant when the antigens are completely unmatched. ... All recipients have some amount of acute rejection. Chronic rejection can take place over many years. The body's constant immune response against the new organ slowly damages the transplanted tissues or organ.
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transplant rejection occurs when transplanted tissue isrejected by the recipient's immune system, which destroys the transplantedtissue. Transplant rejectioncan be lessened by determining the molecular similitude between donor and recipient and by use of immunosuppressant drugs after transplant.
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