In an organ transplant, the alloimmune response of the recipient must be suppressed or the organ will be rejected.

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The alloimmune response of the recipient, which is the immune response against organs from a different individual of the same species, must be suppressed in order for the transplanted organ to survive in the recipient's body. Otherwise, the immune system will recognize the organ as foreign and attack it, leading to rejection.

In an Organ Transplant, the Alloimmune Response of the Recipient