$MALT$ constitutes about _______ percent of the lymphoid tissue in human body.
$20$
$70$
$10$
$50$
Each antibody has $...A...$ polypeptide chains, $...B...$ small chains called $....C...$ chains and $...D...$ longer chains called $.E...$ chains
The antibody, therefore, is represented as $...F...$
Here $A$ to $F$ refers to
Select the incorrect statement with respect to acquired immunity.
Discribe the Innate immunity.
Write in details about Thymus.