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

Transplantation is the replacement of a diseased organ or tissue of an individual with healthy organ or tissue of same or another individual . These transplants or graft gets rejected if it is recognised as foreign antigen by the body's immune systems.
Cell mediated immune response, mediated by T-lymphocyte in able to differentiate between self and non-self cells/organ. This type of immune response recognise the body's non-cells or other tissue or organs from other individual as foreign antigen and cause rejection of the graft.