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(B) The body is able to differentiate between 'self' and 'non-self' cells. Organ transplants are often rejected by the recipient's immune system becau

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Cell-mediated immunity

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(B) The body is able to differentiate between 'self' and 'non-self' cells. Organ transplants are often rejected by the recipient's immune system because the body recognizes the transplanted organ as 'non-self' or foreign tissue. This rejection is primarily mediated by $T$-lymphocytes,which are the key components of cell-mediated immunity $(CMI)$. Therefore,cell-mediated immunity is responsible for the graft rejection.

Which of the following is responsible for the rejection of organ transplants?

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