Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?

Options

A. Auto-immune response
B. Humoral immune response
C. Physiological immune response
D. Cell-mediated immune response

Answer

D

Explanation

Cell mediated immune response is responisble for graft rejection. Tissue matching, blood group matching are essential before undertaking any graft/transplant and even after this the patient has to take immuno-suppressants throughout his/her life as body is able to differentiate 'self' from 'non self'.