Passive immunity can be obtained by injecting

Select the lymphoid organs from the given choices

$I$. Lymph node $II$. Thymus gland

$III$. Red bone marrow $IV$. liver

$V$. Spleen $VI$. Osteocytes

$VII$. Peyer's patches

The correct option with correct choices is

What is interferon

Definitions / Explanation : Pathogen & Immunity
 

Select the incorrect statement with respect to acquired immunity.

Antigen binding site in an antibody is found between