Convalescent serum is obtained from individuals who have recovered from an infection. It contains antibodies and is used in passive immunotherapy to help others fight the same disease.
(d) How is active immunity different from passive immunity?
(c) The organ transplants are often rejected if not taken from suitable compatible persons. [(i)] Mention the characteristic of our immune system that is responsible for the graft rejection. [(ii)] Name the type of immune response and the cell involved in it.
Why is the antibody-mediated immunity also called humoral immune response?