Question
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

Answer

a
$A-Four, B-Two, C-Light, D-Two, E-Heavy, F-$ $H_{2} L_{2}$

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