Which of the following is applicable to an antigen?

After vaccination,the dose given for the immunization is known as

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 $:$

The secretion of interferon is inhibited by . . . . . . .

Which of the following barriers is $NOT$ included in innate immunity?

Small proteins produced by vertebrate cells in response to viral infection,which inhibit further viral multiplication,are known as.............