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?

1. Auto-immune response
2. Humoral immune response
3. Physiological immune response
4. Cell-mediated immune response

(d) 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 rejaction ot the graft.