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. Autoimmune response
B. Cell-mediated immune response
C. Hormonal immune response
D. Physiological immune response

Answer

B

Explanation

Transplantation of tissue/organs may fail, when that tissue is rejected by the recipient's immune system leading to its destruction. Tissue rejection is a function of cell-mediated immune response that involves T-cells. These cells have the ability to distinguish between self and non-self. After the recognition of non-self tissue, the killer T-cells induces apoptosis of the target tissue.