The term ’active immunity' means
‘Pathogens' are
The old worn out $RBCs$ are filtered out by
Which of the following immune responses is responsible for rejection of kidney graft?
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