Which protein is secreted by animal cells in response to viral infection?

Which of the following are primary lymphoid organs?

$A$: A person who has received a cut accidentally and is bleeding needs to be given anti-tetanus treatment.
$R$: Anti-tetanus injection provides active immunity by providing preformed antibodies for tetanus.

Assertion : $A$ person who has received a cut and is bleeding needs to be given anti-tetanus treatment.
Reason : Anti-tetanus injection provides immunity by producing antibodies for tetanus.

Name the primary and secondary lymphoid organs.

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: