Transplantation of tissues/organs often fails | vedclass

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(A) The correct answer is $A$. Transplantation of tissues or organs often fails due to non-acceptance by the patient's body. Therefore,tissue matching

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Cell-mediated immune response

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(A) The correct answer is $A$. Transplantation of tissues or organs often fails due to non-acceptance by the patient's body. Therefore,tissue matching and blood group matching are essential before undertaking any graft or transplant. When the immune system recognizes the proteins in the transplanted tissue or organ as foreign,it initiates a cell-mediated immune response. This response is primarily carried out by $T$-lymphocytes,which attack the transplanted tissue,leading to the rejection of the organ. To suppress this immune response during transplantation,immunosuppressants are administered to the patient.

Column-$I$	Column-$II$
$1$. Cellular barrier	$A$. Saliva in the mouth
$2$. Physiological barrier	$B$. Interferons
$3$. Cytokine barrier	$C$. Natural killer (type of lymphocyte)
$4$. Physical barrier	$D$. Mucus coating of the respiratory tract

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

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