Transplantation of tissues/organs fails often due to nonacceptance by the patient’s body. Which type of immune response is responsible for such rejections?

A Cellmediated immune response
B Hormonal immune response
C Physiological immune response
D Autoimmune response

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Answer & Solution

Correct Answer

(A) Cellmediated immune response

Step-by-step Solution

Detailed explanation

(a) : Transplantation of tissue/organ often fails due to nonacceptance by the patient’s bodytherefore, tissue matching and blood group matching are essential before undertaking any graft/transplant. When the immune system recognises the protein in the transplanted tissue or organ as foreign, it initiates cellular immunity. As a result of this, there is a rejection of transplanted organs. To suppress the immune response during transplantation, histocompatibility antigen and immunosuppressants play an important role.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Transplantation of tissues/organs fails often due to non­acceptance by the patient’s body. Which type of immune response is responsible for such rejections?

Step-by-step Solution

Transplantation of tissues/organs fails often due to nonacceptance by the patient’s body. Which type of immune response is responsible for such rejections?