When the body attacks its own cells,resulting in damage to the body,it is called .......

$A$ newborn infant shows passive acquired immunity against many diseases because:

Which type of immunity is slow and takes time to provide an effective response?

Read the following statements and choose the correct set of statements $:$
$(a)$ Cell-mediated immune response is responsible for the graft rejection.
$(b)$ Grafts from just any source $-$ an animal,another primate,or any human beings can be made since the grafts would be accepted sooner or later.
$(c)$ The organs cannot be taken from just anybody for transplant.
$(d)$ Tissue matching,blood group matching are essential before undertaking any graft/transplant.
Choose the correct answer from the options given below $:$

Where are memory cells produced?

An antigen is