When an insect bites,the affected area swells. Which chemicals are likely introduced into the body?

Which of the following will be included under innate immunity?

The immune response provided by the body against pathogens with the help of $B$-lymphocytes is which type of immunity?

What is injected to induce passive acquired immunity?

An antibody is a

Regarding kidney transplantation,four statements are given below. Select the correct statements.
$i.$ During kidney transplantation,the recipient's immune system is suppressed for a long time.
$ii.$ Cell-mediated immunity is responsible for the rejection of the transplant.
$iii.$ $B$-lymphocytes are responsible for the rejection of the transplant.
$iv.$ Specific interferons are responsible for the acceptance or rejection of the kidney transplant.
Select the correct option: