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
$I$, $II$, $III$ and $IV$
$III$, $IV$, $V$ and $VI$
$IV$, $V$, $VI$ and $VII$
$I$, $II$, $IV$, $V$ and $VII$
Define : Autoimmunity
Antigen binding site in an antibody is found between
Give differences: $T$-lymphocytes and $B$-lymphocytes
Active immunity may be acquired by
A molecule that elicits an immune response is called